Search Results

Search found 10018 results on 401 pages for 'sample rate'.

Page 199/401 | < Previous Page | 195 196 197 198 199 200 201 202 203 204 205 206  | Next Page >

  • Siege - running a stress test benchmark

    - by morgoth84
    I need to do a benchmark test of a HTTPS server using Siege, to see how it behaves under massive load. I'm initiating tests from another machine which is quite powerful and it is connected to the same physical switch the server is connected on. But when I initiate a test, I can't get it to make more than 170 requests per second. With this load the server's CPU usage is at 15-20% and the average response time for a request is approx. 0.03 seconds. Load of the client machine is approx. at 10%. So, I gradually increase the number of users in Siege (the number of worker threads) and request rate linearly increases up to 170 reqs/sec, but it never gets over it. No matter how many more worker threads I start, the load on the server is never more than 20% (and the client's load also doesn't increase any more). How can I overcome this? I've googled a bit and found out that after a request is completed, a socket associated with one ephermal port remains in WAIT_TIME state for some time during which it can't be reused. I tried to overcome this by doing these things: sysctl -w net.ipv4.ip_local_port_range="1024 65535" echo 1 > /proc/sys/net/ipv4/tcp_tw_recycle Oh, and the client machine is a Linux (RedHat, I think, but I'm not sure). Any help would be appreciated.

    Read the article

  • RAIDs with a lot of spindles - how to safely put to use the "wasted" space

    - by kubanczyk
    I have a fairly large number of RAID arrays (server controllers as well as midrange SAN storage) that all suffer from the same problem: barely enough spindles to keep the peak I/O performance, and tons of unused disk space. I guess it's a universal issue since vendors offer the smallest drives of 300 GB capacity but the random I/O performance hasn't really grown much since the time when the smallest drives were 36 GB. One example is a database that has 300 GB and needs random performance of 3200 IOPS, so it gets 16 disks (4800 GB minus 300 GB and we have 4.5 TB wasted space). Another common example are redo logs for a OLTP database that is sensitive in terms of response time. The redo logs get their own 300 GB mirror, but take 30 GB: 270 GB wasted. What I would like to see is a systematic approach for both Linux and Windows environment. How to set up the space so sysadmin team would be reminded about the risk of hindering the performance of the main db/app? Or, even better, to be protected from that risk? The typical situation that comes to my mind is "oh, I have this very large zip file, where do I uncompress it? Umm let's see the df -h and we figure something out in no time..." I don't put emphasis on strictness of the security (sysadmins are trusted to act in good faith), but on overall simplicity of the approach. For Linux, it would be great to have a filesystem customized to cap I/O rate to a very low level - is this possible?

    Read the article

  • AMD processors witn graphics card bundled [closed]

    - by shybovycha
    Sorry for posting this question here - just don't know to which StackExchange website i should be writing. I've heard AMD created processors with video card bundled. So now these processors should work as fast as just usual processors with discrete video card but AMD's ones should use less power and spread less warm. Some googling around gave me the result like "AMD processors of A-series". They were mentioned to be build using that technology i described above. But on the other hand, we have a small rate of publishing and not-very-good quality of AMD drivers. I am a game-developer and web-developer so i need a powerful processor and graphics card and a lot of RAM on board (to make it possible to create a sample Grails application, for example or to create some 3D models in Maya/Cinema4D, for instance). Still i want my battery to be a long-living one, so power usage is a bit critical for me. So, my questions are: are there any processor building technology like i've described and which series they are (if they exist)? which processor shall fit the laptop the best: AMD one or i5/i7 on with nVidia graphics card for the purposes mentioned above?

    Read the article

  • Identifying Exchange 2010 regular process that is walking the mailbox database

    - by toongeneral
    I have an Exchange 2010 server running on a SAN-backed platform. The platform does block-level backups based on a snapshot/incremental basis, that only capture changed data. I was surprised to see a regular period of time where the data changes were happening at a high, sustained rate. Due to the way this system works, that can lead to 1.2TB of stored data per month. The regularity implied a scheduled task, but it is not a fixed interval. It is approximately every 26-32hrs. The disks were performing read operations of ~5MB/s and write operations of ~4.5MB/s, for a period of 3-4hrs. The total written data was ~55-60GB. Reading on TechNet, I am wondering if the following is causing this: http://blogs.technet.com/b/exchange/archive/2011/12/14/database-maintenance-in-exchange-2010.aspx#checksumming The somewhat restrictive thing is that the process only happens at most once every 24 hours. I was able to investigate while it was running, finding the following: the process is store.exe it is working on the mailbox database files while running, it is generating .log files (in the mailbox database folder) consistent with database changes the mailbox database is ~60GB in size, which fits with the total data changes on each iteration I have currently switched to a fixed maintenance window, as a test. It's not clear whether this is the cause, as the symptoms fit, but are not conclusive. Does anyone have any suggestions for additional troubleshooting?

    Read the article

  • How to fix Windows 7 device removal notification loop

    - by Barry Kelly
    Bit of an odd one this. One of our PCs is getting caught in a loop some time after being turned on, usually after a USB storage device has been attached - sometimes an iPod, sometimes a GPS. Specifically, Windows Explorer starts showing a drive icon and letter (E:, as of right now) for the System partition (the small hidden one at the start of the boot drive). Then, the icon disappears. Then it reappears again. And disappears. It does this very quickly, at what looks like maybe 50 times a second. CPU usage in this loop is also very high; averages about 66%. This machine has an i7 920 CPU, which is quad core with hyperthreading; so this usage rate works out to about 5 100% busy threads, along with whatever normal idle load is (particularly Task Manager itself). Inspecting with Process Explorer shows that the device removal notification infrastructure has gone berserk. The threads in system service processes (i.e. apart from Windows Explorer) which are using all the CPU power relate to device notification. The Disk Management MMC snap-in also fails to run when the loop starts. The only way to break the loop, it seems, is to reboot the machine. Anyone seen anything similar to this, and know of a way to fix it? Machine details: Windows 7 x64, fully patched i7 920, 12GB RAM Intel SSD 80GB (X25-M, I believe; not G2) 2TB 5.2K disk for bulk storage AMD HD 5870 Further hardware details await. I'm going to go through and update all drivers I can find.

    Read the article

  • Slow loading Magento Commerce homepage

    - by Matt
    I have recently changed by website and it is really loading slowly :- dancemidisamples.com here is a report http://www.webpagetest.org/result/120906_78_ANK/ As far as I can tell the is a issue with this section of code <link rel="icon" href="http://www.dancemidisamples.com/skin/frontend/base/default /favicon.ico" type="image/x-icon" /> <link rel="shortcut icon" href="http://www.dancemidisamples.com/skin/frontend/base/default/favicon.ico" type="image/x-icon" /> <script type="text/javascript"> //<![CDATA[ var urlSkinsite='http://www.dancemidisamples.com/skin/frontend/em0040/default/'; //]]> </script> <!--[if lt IE 7]> <script type="text/javascript"> //<![CDATA[ var BLANK_URL = 'http://www.dancemidisamples.com/js/blank.html'; var BLANK_IMG = 'http://www.dancemidisamples.com/js/spacer.gif'; //]]> </script> <![endif]--> Does anyone have any ideas, people have told me it my DNS but it has a 49ms response rate according to http://www.webpagetest.org/result/120906_78_ANK/1/details/cached/ We are hosted with rackspace so I dont see how it could be the server. Its a dedicated server not cloud hosted

    Read the article

  • Is my current htaccess setting hurting SEO?

    - by user656002
    I have a site that I have redirecting to https. I do this to leverage wildcard SSL for my password protected pages. Everything seems to work fine with testing. For example, whether you type in http or www, you always get redirected to the SSL https... That said, I have about 200-300 external backlinks -- many high quality, yet google webmaster (along with SEOMoz), shows I have just 4... Huh? I'm embarrassed to say I just discovered this. This has led me to hypothesize that maybe my settings in htaccess is messed up, so google isn't recognizing a link because it's recorded on another site as http, instead of https. Maybe? At any rate, here is my simple htaccess setting for 301 www to http (The https redirect must be done inside the virtual host file--I think). I don't have anything in the htaccess file for https RewriteCond %{HTTP_HOST} ^www\.example\.com$ [NC] RewriteRule ^(.*)$ http://example.com/$1 [L,R=301] Like I said, everything works fine for redirect over https, so I'd rather not screw up what works. On the other hand something is very wrong with google finding all my back links, so I need to fix something... I'm just wondering that maybe google isn't picking up a my backlinks from other websites recording me as http because I'm at https. Maybe google doesn't care and it's some other issue. Am I barking up the right tree? If so any quick fixes? Thanks as always!

    Read the article

  • SQL Server 2012 memory usage steadily growing

    - by pgmo
    I am very worried about the SQL Server 2012 Express instance on which my database is running: the SQL Server process memory usage is growing steadily (1.5GB after only 2 days working). The database is made of seven tables, each having a bigint primary key (Identity) and at least one non-unique index with some included columns to serve the majority of incoming queries. An external application is calling via Microsoft OLE DB some stored procedures, each of which do some calculations using intermediate temporary tables and/or table variables and finally do an upsert (UPDATE....IF @@ROWCOUNT=0 INSERT.....) - I never DROP those temporary tables explicitly: the frequency of those calls is about 100 calls every 5 seconds (I saw that the DLL used by the external application open a connection to SQL Server, do the call and then close the connection for each and every call). The database files are organized in only one filgegroup, recovery type is set to simple. Some questions to diagnose the problem: is that steadily growing memory normal? did I do any mistake in database design which probably lead to this behaviour? (no explicit temp-table drop, filegroup organization, etc) can SQL Server manage such a stored procedure call rate (100 calls every 5 seconds, i.e. 100 upsert every 5 seconds, beyond intermediate calculations)? do the continuous "open connection/do sp call/close connection" pattern disturb SQL Server? is it possible to diagnose what is causing such a memory usage? Perhaps queues of wating requests? (I ran sp_who2, but I didn't see a big amount of orphan connections from the external application) if I restrict the amount of memory which SQL Server is allowed to use, may I sooner or later get into trouble?

    Read the article

  • Cisco 7206vxr cpu reducing

    - by naimson
    I have a 7206VXR (NPE-G2) . At the rate of 140 kpps i gain 80% of cpu . So i looking for ways how to reduce it? So i want to turn off netflow(but don't want to this,monitoring is highly important for me), but it will give me only 10-20% ? At this moment with 84kpps i have 58% sh processes cpu sorted give me this. PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 109 163534600 537236763 304 35.38% 32.83% 16.85% 0 IP Input 67 829396 52280 15864 0.15% 0.01% 0.00% 0 Per-minute Jobs 68 5542736 3053476 1815 0.15% 0.18% 0.16% 0 Per-Second Jobs 51 635852 1116315 569 0.07% 0.03% 0.02% 0 Net Background 329 120396 4607274 26 0.07% 0.00% 0.00% 0 EIGRP-IPv4 Hello 105 50508 95032488 0 0.07% 0.05% 0.05% 0 IPAM Manager 6 4068580 476916 8531 0.00% 0.07% 0.05% 0 Check heaps 7 7768 3634 2137 0.00% 0.00% 0.00% 0 Pool Manager 8 0 1 0 0.00% 0.00% 0.00% 0 DiscardQ Backgro 10 8 708 11 0.00% 0.00% 0.00% 0 WATCH_AFS 5 0 1 0 0.00% 0.00% 0.00% 0 RO Notify Timers 12 0 2 0 0.00% 0.00% 0.00% 0 ATM VC Auto Crea 9 0 2 0 0.00% 0.00% 0.00% 0 Timers 11 0 2 0 0.00% 0.00% 0.00% 0 ATM AutoVC Perio 13 296 610532 0 0.00% 0.00% 0.00% 0 IPC Event Notifi 16 0 1 0 0.00% 0.00% 0.00% 0 IPC Zone Manager 17 3584 2980311 1 0.00% 0.00% 0.00% 0 IPC Periodic Tim 4 0 1 0 0.00% 0.00% 0.00% 0 EDDRI_MAIN 19 0 1 0 0.00% 0.00% 0.00% 0 IPC Process leve 20 0 1 0 0.00% 0.00% 0.00% 0 IPC Seat Manager 21 96 174453 0 0.00% 0.00% 0.00% 0 IPC Check Queue 14 4 50890 0 0.00% 0.00% 0.00% 0 IPC Dynamic Cach 3 0 1 0 0.00% 0.00% 0.00% 0 cpf_process_tpQ 24 756 305371 2 0.00% 0.00% 0.00% 0 IPC Keep Alive M 25 2340 610561 3 0.00% 0.00% 0.00% 0 IPC Loadometer 22 0 1 0 0.00% 0.00% 0.00% 0 IPC Seat RX Cont 15 0 1 0 0.00% 0.00% 0.00% 0 IPC Session Serv 18 1620 2980310 0 0.00% 0.00% 0.00% 0 IPC Deferred Por 29 0 1 0 0.00% 0.00% 0.00% 0 Exception contro sh run(greped): http://pastie.org/5483194 Hardware: c7200p-adventerprisek9-mz.151-4.M1.bin Cisco 7206VXR (NPE-G2) processor (revision A) with 917504K/65536K bytes of memory. Processor board ID 2xxxxxxx MPC7448 CPU at 1666Mhz, Implementation 0, Rev 2.2 6 slot VXR midplane, Version 2.1

    Read the article

  • Computer will freeze/ lock up after doing relatively stressful things

    - by GrowingCode247
    I'll first start off by saying that the issue GENERALLY doesn't occur unless I'm doing something remotely stressful for my computer. This issue used to occur whenever it felt it was necessary, however has not occurred completely randomly for a while now (thankfully) My computer's specs: CPU: AMD Phenom II X4 960T GPU: GeForce GTX 760 Memory: 16 GB RAM Resolution Used: 1680x1050, 59Hz (strange number for refresh rate?) res is highest for monitor Nvidia Driver version: 331.65 OS: Microsoft Windows 7 Ultimate (64-bit) Sometimes I will be able to go 2-3 games (about an hour, depending) and sometimes it will go maybe one game (20-30 minutes) and then my computer will run sluggishly and leave me unable to do much of anything. I can sometimes interact with programs at a very basic level (maximizing, minimizing), and I usually cannot close them in any way, not even through Task Manager. The highest temperature my GPU reaches is 76C, with the average being around 73C. During the time the temperatures are around 73C, my GPU's RAM usage is anywhere between 1250-1300 (out of 2GB). My CPU's temperature never goes over 60C, thankfully. The PSU should be fine. It's very mildly dusty but I feel as though that would not be causing this problem... I will clean it out as soon as everything else has been ruled out. Honestly I have no clue how to test the PSU for problems - same goes for my Motherboard. I cannot really think of what could be causing these freezes otherwise. Event Viewer details: EventID: 1 - VDS Basic Provider (I've no clue what this is) EventID: 3 - Kernel-EventTracing (Again, lost) EventID: 8003 - bowser (this seems fishy) and the one critical that I know others have been dealing with as I've browsed some other responses on the web: EventID: 41 - Kernel-Power any help to solve this problem would be GREATLY appreciated.

    Read the article

  • amazon ec2-medium apache requests per second terrible

    - by TheDayIsDone
    EDITED -- test running from localhost now to rule out network... i have a c1.medium using EBS. when i do an apache benchmark and i'm just printing a "hello" for the test from localhost - no database hits, it's very slow. i can repeat this test many times with the same results. any thoughts? thanks in advance. ab -n 1000 -c 100 http://localhost/home/test/ Benchmarking localhost (be patient) Completed 100 requests Completed 200 requests Completed 300 requests Completed 400 requests Completed 500 requests Completed 600 requests Completed 700 requests Completed 800 requests Completed 900 requests Completed 1000 requests Finished 1000 requests Server Software: Apache/2.2.23 Server Hostname: localhost Server Port: 80 Document Path: /home/test/ Document Length: 5 bytes Concurrency Level: 100 Time taken for tests: 25.300 seconds Complete requests: 1000 Failed requests: 0 Write errors: 0 Total transferred: 816000 bytes HTML transferred: 5000 bytes Requests per second: 39.53 [#/sec] (mean) Time per request: 2530.037 [ms] (mean) Time per request: 25.300 [ms] (mean, across all concurrent requests) Transfer rate: 31.50 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 7 21.0 0 73 Processing: 81 2489 665.7 2500 4057 Waiting: 80 2443 654.0 2445 4057 Total: 85 2496 653.5 2500 4057 Percentage of the requests served within a certain time (ms) 50% 2500 66% 2651 75% 2842 80% 2932 90% 3301 95% 3506 98% 3762 99% 3838 100% 4057 (longest request)

    Read the article

  • Reduce size of MP4

    - by testing
    I have a MP4 file with a lengh of 22:44. Here are the details: Video: width: 720 px height: 404 px data bitrate: 1022 kBit/s overall bitrate: 1182 kBit/s fps: 24 codec: H264 - MPEG4 AVC (part 10) (avc1) Audio: bitrate: 159 kBit/s stereo sample rate: 48 kHz codec: MPEG AAC Audio (mp4a) I thought I can reduce the current filesize (about 200 MB) by reducing the width and the height (420 x 236). I tried different programs: Handbrake, Format Factory, Next Video Converter and Super. The first three didn't worked as expected: Handbrake has a bug by setting the width and the height, the next two doesn't allow the fine setting of the videosize (only presets of width and height). Super seems to be the best, but I didn't found a setting which reduces the file size. I reduced the width and the height but only got 20 MB less. Now I tried the xth setting and I still get a too high file size. I want to reduce the filesize to 100 MB or less. The ouput format should be FLV or MP4, because I need this for flowplayer. Which settings of SUPER or which program should I use to reduce the file size? Of course the video should still be viewable.

    Read the article

  • Monitoring Between EC2 Regions

    - by ABrown
    I'm working on a small EC2 project that involves a handful of servers in two different regions (US East and EU West). My first task is to implement a Nagios monitoring solution. Monitoring within a region is simple - I just use the private domain names/IPs, but I'm a little unsure of the best way to handle monitoring the second region without setting up a second Nagios install. The environment is fairly static, so I'm not going to be scripting the configuration with the EC2 tools just yet. As I see it, I have two options. Two Nagios installations (which is over-kill for the small number of servers I'm dealing with). Pros: I don't have to alter the group permissions nor do I have to pay for the traffic, redundancy in the monitoring solution - I could monitor the Nagios servers. Cons: two installations to deal with and I'd need to run another server instance. Have the single installation monitor both regions. Pros: one installation to deal with. Cons: slightly reduced security - security group will have to have NRPE (5666) opened for one source IP and also paying for a small amount of bandwidth at the Internet rate for data transfer between the regions. I guess my question is - how have others handled this problem and what are your recommendations? Thanks!

    Read the article

  • Moving an external hard drive while running

    - by user1108939
    I mean physically moving the drive around. I've never dealt with external hard drives before. Just plugged this wd mypassport to test the transfer rate. At one point I 'safely ejected' the drive. A minute later I decide to check the underside of the drive, not realizing the disk is still spinning. I lift the drive, rotating my writs about 70 degrees to the left... I hear a sequence of three high pitched sounds. I couldn't determine whether that was an indication beep by an internal security feature or the head scratching the plate (oh god...). Drive stops and usb power is disconnected. I reconnect it - it shows up fine - reads/writes. The drive was not reading/writing when i moved it. Did I damage my drive? Are these things that fragile? I thought them to be at least as durable as a standard 2.5" internal drive. Am I mistaken?

    Read the article

  • GridBagConstraints problem-moved to left and size isn't the same

    - by Damir
    I have in Java two panels which need to have same layout, there is my functions for initializations panels. private void InitializePanelCom(){ pnlCom=new JPanel(); pnlCom.setSize(300,160); pnlCom.setLocation(10, 60); add(pnlCom); GridBagLayout gb=new GridBagLayout(); GridBagConstraints gc=new GridBagConstraints(); pnlCom.setLayout(gb); jLabelcommPort = setJLabel("Com Port : "); jLabelbaudRate = setJLabel("Baud Rate : "); jLabelplcAddress = setJLabel("Plc Address : "); jLabelsendTime = setJLabel("Send Time : "); jLabelx50 = setJLabel(" x 50 ms (2 - 99)"); jComboBoxcommPort = setJComboBox(commPortList); jComboBoxbaudRate = setJComboBox(bitRateList); jTextAreaPlcAddress = setJTextField(""); jTextAreaSendTime = setJTextField(""); gc.insets = new Insets(10,0,0,0); gc.ipadx = 120; gc.weightx = 1; gc.gridx = 0; gc.gridy = 0; gc.anchor=GridBagConstraints.EAST; pnlCom.add(jLabelcommPort,gc); gc.insets = new Insets(10,0,0,0); gc.ipadx = 120; gc.weightx = 1; gc.gridx = 1; gc.gridy = 0; gc.anchor=GridBagConstraints.EAST; pnlCom.add(jComboBoxcommPort,gc); gc.insets=new Insets(10,0,0,0); gc.ipadx=120; gc.weightx=1; gc.gridx=0; gc.gridy=1; gc.anchor=GridBagConstraints.EAST; pnlCom.add(jLabelbaudRate,gc); gc.insets=new Insets(10,0,0,0); gc.ipadx=120; gc.weightx=1; gc.gridx=1; gc.gridy=1; gc.anchor=GridBagConstraints.EAST; pnlCom.add(jComboBoxbaudRate,gc); gc.insets=new Insets(10,0,0,0); gc.ipadx=120; gc.weightx=1; gc.gridx=0; gc.gridy=2; gc.anchor=GridBagConstraints.EAST; pnlCom.add(jLabelplcAddress,gc); gc.insets=new Insets(10,0,0,0); gc.ipadx=120; gc.weightx=1; gc.gridx=1; gc.gridy=2; gc.anchor=GridBagConstraints.EAST; pnlCom.add(jTextAreaPlcAddress,gc); gc.insets=new Insets(10,0,0,0); gc.ipadx=120; gc.weightx=1; gc.gridx=0; gc.gridy=3; gc.anchor=GridBagConstraints.EAST; pnlCom.add(jLabelsendTime,gc); gc.insets=new Insets(10,0,0,0); gc.ipadx=120; gc.weightx=1; gc.gridx=1; gc.gridy=3; gc.anchor=GridBagConstraints.EAST; pnlCom.add(jTextAreaSendTime,gc); gc.insets=new Insets(10,0,0,0); gc.ipadx=120; gc.weightx=1; gc.gridx=2; gc.gridy=3; gc.anchor=GridBagConstraints.EAST; pnlCom.add(jLabelx50,gc); } ![alt text][1] private void InitializePanelTcp(){ pnlTcp=new JPanel(); pnlTcp.setSize(300,160); pnlTcp.setLocation(10, 60); add(pnlTcp); GridBagLayout gb=new GridBagLayout(); GridBagConstraints gc=new GridBagConstraints(); pnlTcp.setLayout(gb); lblIPAddress=setJLabel("IP Address : "); txtIPAddress=setJTextField(""); lblPort=setJLabel("Port : "); txtPort=setJTextField(""); cmbBaudRateTCP = setJComboBox(bitRateList); lblBaudRateTCP = setJLabel("Baud Rate : "); lblParityCheck=setJLabel("Parity check : "); txtParityCheck=setJTextField(""); gc.insets = new Insets(10,0,0,0); //gc.ipadx = 20; gc.weightx = 0.3; gc.gridx = 0; gc.gridy = 0; gc.anchor=GridBagConstraints.WEST; pnlTcp.add(lblIPAddress,gc); gc.insets = new Insets(10,0,0,0); //gc.ipadx = 80; gc.weightx = 0.7; gc.gridx = 1; gc.gridy = 0; gc.anchor=GridBagConstraints.WEST; pnlTcp.add(txtIPAddress,gc); gc.insets=new Insets(10,0,0,0); //gc.ipadx=120; gc.weightx=0.3; gc.gridx=0; gc.gridy=1; gc.anchor=GridBagConstraints.WEST; pnlTcp.add(lblPort,gc); gc.insets=new Insets(10,0,0,0); //gc.ipadx=80; gc.weightx=0.7; gc.gridx=1; gc.gridy=1; gc.anchor=GridBagConstraints.WEST; pnlTcp.add(txtPort,gc); gc.insets=new Insets(10,0,0,0); //gc.ipadx=120; gc.weightx=0.3; gc.gridx=0; gc.gridy=2; gc.anchor=GridBagConstraints.WEST; pnlTcp.add(lblBaudRateTCP,gc); gc.insets=new Insets(10,0,0,0); //gc.ipadx=0; gc.weightx=0.7; gc.gridx=1; gc.gridy=2; gc.anchor=GridBagConstraints.WEST; pnlTcp.add(cmbBaudRateTCP,gc); gc.insets=new Insets(10,0,0,0); //gc.ipadx=120; gc.weightx=0.3; gc.gridx=0; gc.gridy=3; gc.anchor=GridBagConstraints.WEST; pnlTcp.add(lblParityCheck,gc); gc.insets=new Insets(10,0,0,0); //gc.ipadx=0; gc.weightx=1.7; gc.gridx=1; gc.gridy=3; gc.anchor=GridBagConstraints.WEST; pnlTcp.add(txtParityCheck,gc); } Problem is that second panel (initializetcp, second picture doesn't look the same, labels are moved at left , it is different ). Can anybody help, I am new with GridBagContsraints at all ?

    Read the article

  • Autocorrelation returns random results with mic input (using a high pass filter)

    - by Niall
    Hello, Sorry to ask a similar question to the one i asked before (FFT Problem (Returns random results)), but i've looked up pitch detection and autocorrelation and have found some code for pitch detection using autocorrelation. Im trying to do pitch detection of a users singing. Problem is, it keeps returning random results. I've got some code from http://code.google.com/p/yaalp/ which i've converted to C++ and modified (below). My sample rate is 2048, and data size is 1024. I'm detecting pitch of both a sine wave and mic input. The frequency of the sine wave is 726.0, and its detecting it to be 722.950820 (which im ok with), but its detecting the pitch of the mic as a random number from around 100 to around 1050. I'm now using a High pass filter to remove the DC offset, but it's not working. Am i doing it right, and if so, what else can i do to fix it? Any help would be greatly appreciated! double* doHighPassFilter(short *buffer) { // Do FFT: int bufferLength = 1024; float *real = malloc(bufferLength*sizeof(float)); float *real2 = malloc(bufferLength*sizeof(float)); for(int x=0;x<bufferLength;x++) { real[x] = buffer[x]; } fft(real, bufferLength); for(int x=0;x<bufferLength;x+=2) { real2[x] = real[x]; } for (int i=0; i < 30; i++) //Set freqs lower than 30hz to zero to attenuate the low frequencies real2[i] = 0; // Do inverse FFT: inversefft(real2,bufferLength); double* real3 = (double*)real2; return real3; } double DetectPitch(short* data) { int sampleRate = 2048; //Create sine wave double *buffer = malloc(1024*sizeof(short)); double amplitude = 0.25 * 32768; //0.25 * max length of short double frequency = 726.0; for (int n = 0; n < 1024; n++) { buffer[n] = (short)(amplitude * sin((2 * 3.14159265 * n * frequency) / sampleRate)); } doHighPassFilter(data); printf("Pitch from sine wave: %f\n",detectPitchCalculation(buffer, 50.0, 1000.0, 1, 1)); printf("Pitch from mic: %f\n",detectPitchCalculation(data, 50.0, 1000.0, 1, 1)); return 0; } // These work by shifting the signal until it seems to correlate with itself. // In other words if the signal looks very similar to (signal shifted 200 data) than the fundamental period is probably 200 data // Note that the algorithm only works well when there's only one prominent fundamental. // This could be optimized by looking at the rate of change to determine a maximum without testing all periods. double detectPitchCalculation(double* data, double minHz, double maxHz, int nCandidates, int nResolution) { //-------------------------1-------------------------// // note that higher frequency means lower period int nLowPeriodInSamples = hzToPeriodInSamples(maxHz, 2048); int nHiPeriodInSamples = hzToPeriodInSamples(minHz, 2048); if (nHiPeriodInSamples <= nLowPeriodInSamples) printf("Bad range for pitch detection."); if (1024 < nHiPeriodInSamples) printf("Not enough data."); double *results = new double[nHiPeriodInSamples - nLowPeriodInSamples]; //-------------------------2-------------------------// for (int period = nLowPeriodInSamples; period < nHiPeriodInSamples; period += nResolution) { double sum = 0; // for each sample, find correlation. (If they are far apart, small) for (int i = 0; i < 1024 - period; i++) sum += data[i] * data[i + period]; double mean = sum / 1024.0; results[period - nLowPeriodInSamples] = mean; } //-------------------------3-------------------------// // find the best indices int *bestIndices = findBestCandidates(nCandidates, results, nHiPeriodInSamples - nLowPeriodInSamples - 1); //note findBestCandidates modifies parameter // convert back to Hz double *res = new double[nCandidates]; for (int i=0; i < nCandidates;i++) res[i] = periodInSamplesToHz(bestIndices[i]+nLowPeriodInSamples, 2048); double pitch2 = res[0]; free(res); free(results); return pitch2; } /// Finds n "best" values from an array. Returns the indices of the best parts. /// (One way to do this would be to sort the array, but that could take too long. /// Warning: Changes the contents of the array!!! Do not use result array afterwards. int* findBestCandidates(int n, double* inputs,int length) { //int length = inputs.Length; if (length < n) printf("Length of inputs is not long enough."); int *res = new int[n]; double minValue = 0; for (int c = 0; c < n; c++) { // find the highest. double fBestValue = minValue; int nBestIndex = -1; for (int i = 0; i < length; i++) { if (inputs[i] > fBestValue) { nBestIndex = i; fBestValue = inputs[i]; } } // record this highest value res[c] = nBestIndex; // now blank out that index. if(nBestIndex!=-1) inputs[nBestIndex] = minValue; } return res; } int hzToPeriodInSamples(double hz, int sampleRate) { return (int)(1 / (hz / (double)sampleRate)); } double periodInSamplesToHz(int period, int sampleRate) { return 1 / (period / (double)sampleRate); } Thanks, Niall. Edit: Changed the code to implement a high pass filter with a cutoff of 30hz (from What Are High-Pass and Low-Pass Filters?, can anyone tell me how to convert the low-pass filter using convolution to a high-pass one?) but it's still returning random results. Plugging it into a VST host and using VST plugins to compare spectrums isn't an option to me unfortunately.

    Read the article

  • How Should I Generate Trade Statistics For CouchDB/Rails3 Application?

    - by James
    My Problem: I am trying to developing a web application for currency traders. The application allows traders to enter or upload information about their trades and I want to calculate a wide variety of statistics based on what the user entered. Now, normally I would use a relational database for this, but I have two requirements that don't fit well with a relational database so I am attempting to use couchdb. Those two problems are: 1) Primarily, I have a companion desktop application that users will be able to work with and replicate to the site using couchdb's awesome replication feature and 2) I would like to allow users to be able to define their own custom things to track about trades and generate results based off of what they enter. The schema less nature of couch seems perfect here, but it may end up being harder than it sounds. (I already know couch requires you to define views in advance and such so I was just planning on sticking all the custom attributes in an array and then emitting the array in the view and further processing from there.) What I Am Doing: Right now I am just emitting each trade in couch keyed by each user's system and querying with the key of the system to get an array of trades per system. Simple. I am not using a reduce function currently to calculate any stats because I couldn't figure out how to get everything I need without getting a reduce overflow error. Here is an example of rows that are getting emitted from couch: {"total_rows":134,"offset":0,"rows":[ {"id":"5b1dcd47221e160d8721feee4ccc64be", "key":["80e40ba2fa43589d57ec3f1d19db41e6","2010/05/14 04:32:37 +0000"], null, "doc":{ "_id":"5b1dcd47221e160d8721feee4ccc64be", "_rev":"1-bc9fe763e2637694df47d6f5efb58e5b", "couchrest-type":"Trade", "system":"80e40ba2fa43589d57ec3f1d19db41e6", "pair":"EUR/USD", "direction":"Buy", "entry":12600, "exit":12700, "stop_loss":12500, "profit_target":12700, "status":"Closed", "slug":"101332132375", "custom_tracking": [{"name":"signal", "value":"Pin Bar"}] "updated_at":"2010/05/14 04:32:37 +0000", "created_at":"2010/05/14 04:32:37 +0000", "result":100}} ]} In my rails 3 controller I am basically just populating an array of trades such as the one above and then extracting out the relevant data into smaller arrays that I can compute my statistics on. Here is my show action for the page that I want to display the stats and all the trades: def show @trades = Trade.by_system(:startkey => [@system.id], :endkey => [@system.id, Time.now ]) @trades.each do |trade| if trade.result > 0 @winning_trades << trade.result elsif trade.result < 0 @losing_trades << trade.result else @breakeven_trades << trade.result end if trade.direction == "Buy" @long_trades << trade.result else @short_trades << trade.result end if trade["custom_tracking"] != nil @custom_tracking << {"result" => trade.result, "variables" => trade["custom_tracking"]} end end end I am omitting some other stuff that is going on, but that is the gist of what I am doing. Then I am calculating stuff in the view layer to produce some results: <% winning_long_trades = @long_trades.reject {|trade| trade <= 0 } %> <% winning_short_trades = @short_trades.reject {|trade| trade <= 0 } %> <ul> <li>Total Trades: <%= @trades.count %></li> <li>Winners: <%= @winning_trades.size %></li> <li>Biggest Winner (Pips): <%= @winning_trades.max %></li> <li>Average Win(Pips): <%= @winning_trades.sum/@winning_trades.size %></li> <li>Losers: <%= @losing_trades.size %></li> <li>Biggest Loser (Pips): <%= @losing_trades.min %></li> <li>Average Loss(Pips): <%= @losing_trades.sum/@losing_trades.size %></li> <li>Breakeven Trades: <%= @breakeven_trades.size %></li> <li>Long Trades: <%= @long_trades.size %></li> <li>Winning Long Trades: <%= winning_long_trades.size %></li> <li>Short Trades: <%= @short_trades.size %></li> <li>Winning Short Trades: <%= winning_short_trades.size %></li> <li>Total Pips: <%= @winning_trades.sum + @losing_trades.sum %></li> <li>Win Rate (%): <%= @winning_trades.size/@trades.count.to_f * 100 %></li> </ul> This produces the following results, which aside from a few things is exactly what I want: Total Trades: 134 Winners: 70 Biggest Winner (Pips): 1488 Average Win(Pips): 440 Losers: 58 Biggest Loser (Pips): -516 Average Loss(Pips): -225 Breakeven Trades: 6 Long Trades: 125 Winning Long Trades: 67 Short Trades: 9 Winning Short Trades: 3 Total Pips: 17819 Win Rate (%): 52.23880597014925 What I Am Wondering- Finally The Actual Questions: I am starting to get really skeptical of how well this method will work when a user has 5,000 trades instead of just 134 like in this example. I anticipate most users will only have somewhere under 200 per year, but some users may have a couple thousand trades per year. Probably no more than 5,000 per year. It seems to work ok now, but the page load times are already getting a tad high for my tastes. (About 800ms to generate the page according to rails logs with about a 250ms of that spent in the view layer.) I will end up caching this page I am sure, but I still need the regenerate the page each time a trade is updated and I can't afford to have this be too slow. Sooo..... Is doing something similar here possible with a straight couchdb reduce function? I am assuming handing this off to couch would possibly help with larger data sets. I couldn't figure out how, but I suppose that doesn't mean it isn't possible. If possible, any hints will be helpful. Could I use a list function if a reduce was not available due to reduce constraints? Are couchdb list functions suitable for this type of calculations? Anyone have any idea of whether or not list functions perform well? Any hints what one would look like for the type of calculations I am trying to achieve? I thought about other options such as running the calculations at the time each trade was saved or nightly if I had to and saving the results to a statistics doc that I could then query so that all the processing was done ahead of time. I would like this to be the last resort because then I can't really filter out trades by time periods dynamically like I would really like to. (I want to have a slider that a user can slide to only show trades from that time period using the startkey and endkey in couchdb if I can.) If I should continue running the calculations inside the rails app at the time of the page view, what can I do to improve my current implementation. I am new to rails, couch and programming in general. I am sure that I could be doing something better here. Do I need to create an array for each stat or is there a better way to do that. I guess I just would really like some advice on how to tackle this problem. I want to keep the page generation time minimal since I anticipate these being some of the highest trafficked pages. My gut is that I will need to offload the statistics calculation to either couch or run the stats in advance of when they are called, but I am not sure. Lastly: Like I mentioned above, one of the primary reasons for using couch is to allow users to define their own things to track per trade. Getting the data into couch is no problem, but how would I be able to take the custom_tracking array and find how many winning trades for each named tracking attribute. If anyone can give me any hints to the possibility of doing this that would be great. Thanks a bunch. Would really appreciate any help. Willing to fork out some $$$ if someone wants to take on the problem for me. (Don't know if that is allowed on stack overflow or not.)

    Read the article

  • MySQL Replication Over SSH - Last_IO_Errno: 2003 - error connecting to master

    - by Dom
    I have MySQL MASTER/SLAVE replication working on two test boxes (Centos 6.4 / MySQL 5.5.32) over LAN. Securing the connection over ssh causes connection problems from the SLAVE machine: (Sample of show slave status \G Output) Last_IO_Errno: 2003 Last_IO_Error: error connecting to master '[email protected]:3305' - retry-time: 60 I have granted the replication user the relevant privileges on the master server with both 127.0.0.1 and the network IP. I have forwarded the port from slave to master over SSH ssh -f 192.168.0.128 -L 3305:192.168.0.128:3306 -N I can connect to master MySQL from slave with mysql -urep -ppassword -h127.0.0.1 -P3305 The master server setup would seem fine, as it works without a tunnel, and the tunnel seems fine, as I can connect to MySQL between the two. Change Master Statement: CHANGE MASTER TO MASTER_HOST='127.0.0.1', MASTER_PORT=3305, MASTER_USER='rep', MASTER_PASSWORD='password'; Note: I know there are reasons to use SSL, instead of SSH, but I have reasons why SSH is a better choice for my setup.

    Read the article

  • Testing IPP Printing with ipptool

    - by senloe
    I'm trying to send an IPP print job using the ipptool. Using the sample .test files, I can send commands to the printer, but I am unable to successfully use the print-job.test file. Here's an example using ipptool. c:\...>ipptool -v ipp://name.local.:631/ipp/printer print-job.test ipptool: Filename "$filename" on line 21 cannot be read. ipptool: Filename mapped to "". It looks like it's failing resolving the variable $filename within the test file so I attempted to hardcode this value in the test file. In this case I get no error, but still no print. Does anybody have any experience using ipptool to test ipp printing?

    Read the article

  • Rotate haproxy logs

    - by Jagbir
    I tried few things but still not able to rotate haproxy logs efficiently. I need to rotate logs when log files crosses 500 MB size. Considering haproxy is serving large no. of static tcp connections, I can not restart haproxy process though a reload is doable. Daily haproxy log file size normally crosses 3 GB on my machine. Here's sample from one of newer machine where log file size is growing beyond limit set: ubuntu@server:/mnt/log/haproxy$ ls -lsh total 4.3G 85M -rw-r----- 1 syslog adm 85M Jun 2 07:13 haproxy.log 2.9G -rw-r----- 1 syslog adm 2.9G Jun 2 06:37 haproxy.log.1 460M -rw-r----- 1 syslog adm 460M Jun 1 06:32 haproxy.log.2.gz 469M -rw-r----- 1 syslog adm 469M May 31 06:42 haproxy.log.3.gz 384M -rw-r----- 1 syslog adm 384M May 30 06:49 haproxy.log.4.gz ubuntu@server:/mnt/log/haproxy$ cat /etc/logrotate.d/haproxy /mnt/log/haproxy/haproxy.log { missingok copytruncate notifempty rotate 50 size 500M compress delaycompress }

    Read the article

  • NPS EAP authentication failing after Windows Update

    - by sqlreader
    I have a Windows 2008 Std server running NPS. After applying the latest round of updates (including Root Certificates for April 2012 KB931125 (See:http://support.microsoft.com/kb/933430/)), EAP authentication is failing due to being malformed. Sample error (Security/Event ID 6273), truncated for brevity: Authentication Details: Proxy Policy Name: Use Windows authentication for all users Network Policy Name: Wireless Access Authentication Provider: Windows Authentication Server: nps-host.corp.contoso.com Authentication Type: PEAP EAP Type: - Account Session Identifier: - Reason Code: 266 Reason: The message received was unexpected or badly formatted. The NPS policy (Wireless Access) is configured accordingly (for Constraints/Authentication methods) EAP Types: Microsoft: Protected EAP (PEAP) - with a valid certificate from ADCS Microsoft: Secured password (EAP-MSCHAP v2) Less secure authentication methods: Microsoft Encrypted Authentication version 2 (MS-CHAP-v2) User can change password after it has expired Microsoft Encrypted Authentication (MS-CHAP) User can change password after it has expired We've tested a different RADIUS server without the aforementioned patch, and removed EAP as an authentication type and experienced success. Has anyone else experienced this issue?

    Read the article

  • Powershell - Set-ClusteredScheduledTask - Error "Incorrect function."

    - by NealWalters
    I'm experimenting with Powershell to add a ClusteredScheduledTask on a clustered server (Win 2012/R2) Technet sample code gives error: #canned exampled from http://technet.microsoft.com/en-us/library/jj649815.aspx $Action01 = New-ScheduledTaskAction -Execute Notepad $Action02 = New-ScheduledTaskAction -Execute Calc Set-ClusteredScheduledTask -TaskName "Task03" -Action $Action01,$Action02 Error: Set-ClusteredScheduledTask : Incorrect function. At I:\Scripts\TaskSchedulerSetupJobs\TestWebSampleCode.ps1:4 char:1 + Set-ClusteredScheduledTask -TaskName "Task03" -Action $Action01,$Action02 + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (PS_ClusteredScheduledTask:Root/Microsoft/...edScheduledTask) [Set-ClusteredScheduledTask], CimException + FullyQualifiedErrorId : HRESULT 0x80070001,Set-ClusteredScheduledTask Added: As KrisFR pointed out below, I really meant to do a Register, not Set, but I still get the same basic error: #canned exampled from http://technet.microsoft.com/en-us/library/jj649815.aspx cls $Trigger = New-ScheduledTaskTrigger -At 12:00 -Once $Action01 = New-ScheduledTaskAction -Execute Notepad Register-ClusteredScheduledTask -TaskName "Task03" -Trigger $Trigger -Action $Action01 Error: Register-ClusteredScheduledTask : The parameter is incorrect. At I:\Scripts\TaskSchedulerSetupJobs\TestWebSampleCode.ps1:5 char:1 + Register-ClusteredScheduledTask -TaskName "Task03" -Trigger $Trigger -Action $Ac ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidArgument: (PS_ClusteredScheduledTask:Root/Microsoft/...edScheduledTask) [Register-ClusteredScheduledTask], CimExce ption + FullyQualifiedErrorId : HRESULT 0x80070057,Register-ClusteredScheduledTask

    Read the article

  • Linux: setting up an elite/high-anonimity Web proxy on a dedicated server

    - by YellowSquirrel
    I'm renting a dedicated server which I'd like to use to "surf the Web": basically I want to always surf the Web from the same static IP (the one of my dedicated server). I can do it by running Xvnc/FreeNX on the dedicated server, but this is kinda slow and clumsy (I tried it). What are the steps needed to install an "elite/high-anonimity" Web proxy on a dedicated (Debian) Linux server knowing that my two requirements are: I'm the only person that needs access to the proxy all I want is that my broadband (dynamic) IP is completely hidden (I want to always surf from my dedicated server's IP). Note that using the static IP people can find my domains and my real name and I'm perfectly fine with that (actually it is what I want). What I don't want is people knowing from which dynamic IP (broadband) I'm connecting. What are the steps needed to do that? (basically I don't care about "anonimity", what I want is to appear to surf from a static IP and I think I need what is called an "elite" Web proxy to do that, but I'm not sure) Technical infos and sample configuration most welcome :)

    Read the article

  • Tomcat 6 HTTPS connector: keep alive timeout not being respected

    - by sehugg
    I'm using Tomcat 6.0.24 on Ubuntu (JDK 1.6) with an app that does Comet-style requests on an HTTPS connector (directly against Tomcat, not using APR). I'd like to set the keep-alive to 5 minutes so I don't have to refresh my long-polling connections. Here is my config: <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" maxThreads="1000" keepAliveTimeout="330000" scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" /> Unfortunately it seems that the server closes the connection after 65 seconds. The pcap from a sample session goes something like this: T=0 Client sends SYN to server, handshake etc. T=65 Server sends FIN to client T=307 Client sends FIN to server (I'm guessing the 5 minute timeout on the client is due to the HTTP lib not detecting the socket close on the server end, but in any case -- the server shouldn't be closing the connection that early) (edit: this works as expected when using the standard HTTP connector)

    Read the article

  • Outlook 2003: How to print embedded images in e-mails?

    - by Jon Seigel
    My boss has been trying to print his e-mails with embedded images, but the images don't print. All we get is a placeholder space where the image should be. Ideally, we'd like to have an option to control whether images get printed or not. I Googled this already and the one solution I found, trying to print the e-mail from the separate window using the print icon, did not work. Edit: also tried the solution here without success. I had him forward a sample e-mail to me, and I printed it fine in my Outlook (same version).

    Read the article

< Previous Page | 195 196 197 198 199 200 201 202 203 204 205 206  | Next Page >