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  • SATA 300 mobo and drives but only connected at SATA 150

    - by Shevek
    I have an Abit AB9 QuadGT motherboard which supports SATA 300 drives Connected to it I have a Kingston SSDNow V Series 64GB as boot drive and a Seagate Barracuda 7200.10 as a data drive. I also have 2 x Optiarc AD-7170S DVD burners attached by SATA Both SSD and HDD are SATA 300 and the optical drives are SATA 150 I have just run CrystalDiskInfo and this is reporting that both SSD and HDD are connected at SATA 150, not SATA 300. I have the BIOS set up to use SATA drives in IDE mode. So a few questions: Is CrystalDiskInfo reporting correctly? Are the optical drives causing the SSD & HDD to connect at the slower rate? Is there any setting to force the SSD & HDD to use SATA 300? I'm running Windows 7 Ultimate

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  • SAN with iSCSI-Target Performance Horrendous

    - by Justin
    We have a poor man's SAN setup in a 1U Ubuntu server running iSCSI-Target with two 300GB drives in RAID-0. We then are using it for block level storage for virtual machines. The hypervisor is connected to the SAN via gigabit on a dedicated VLAN and interfaces. We only have a single virtual machine setup and doing some benchmarks. If we run hdparm -t /dev/sda1 from the virtual machine, we get 'ok' performance of 75MB/s from the virtual machine to the SAN. Then we basically compile a package with ./configure and make. Things start ok, but then all the sudden the load average on the SAN grows to 7+ and things slow down to a crawl. When we SSH into the SAN and run top, sure the load is 7+, but the CPU usage is basically nothing, also the server has 1.5GB of memory available. When we kill the compile on the virtual machine, slowly the LOAD on the SAN goes back to sub 1 figures. What in the world is causing this? How can we diagnosis this further? Here are two screenshot from the SAN during high load. 1> Output of iotop on the SAN: 2> Output of top on the SAN:

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  • Throttling Postfix memory

    - by teddybeard
    I have a VPS on 1and1 similar to this configuration (512MB, burst up to 2GB). I run a web service where I crawl the web and notify my users through email and sms when a certain online data feed changes. When I send the emails out, I just have PHP loop through the recipients list and send the emails out using the mail() function. Whenever I try to send a large volume of these messages out, my server starts acting funny. I can't even run an 'ls' sometimes because the shell tells me it 'cannot allocate memory'. The shell is unusable and yet my website is being served up fine. Mail.err contains: Nov 14 17:30:09 s15351477 postfix/smtp[26000]: fatal: inet_addr_local[getifaddrs]: getifaddrs: Cannot allocate memory Nov 14 17:30:09 s15351477 postfix/sendmail[25999]: fatal: username(1000): unable to execute /usr/sbin/postdrop -r: Success Nov 14 18:29:14 s15351477 postfix/smtp[9911]: fatal: inet_addr_local[getifaddrs]: getifaddrs: Cannot allocate memory Nov 14 18:29:14 s15351477 postfix/sendmail[9910]: fatal: username(1000): unable to execute /usr/sbin/postdrop -r: Success Also, if relevant, my bean counters are: Version: 2.5 uid resource held maxheld barrier limit failcnt 53907331: kmemsize 20779422 21041560 31457280 34603008 2989403 lockedpages 0 0 512 512 0 privvmpages 81488 82498 524288 576716 94640 shmpages 2831 2831 32768 32768 0 dummy 0 0 9223372036854775807 9223372036854775807 0 numproc 90 91 128 128 6603 physpages 32692 33531 2147483647 2147483647 0 vmguarpages 0 0 131072 2147483647 0 oomguarpages 32942 33781 9223372036854775807 2147483647 0 numtcpsock 22 23 720 720 0 numflock 27 28 376 413 0 numpty 1 1 32 32 0 numsiginfo 0 1 512 512 0 tcpsndbuf 425888 441064 3440640 5406720 0 tcprcvbuf 369200 376832 3440640 5406720 0 othersockbuf 268000 268464 2252160 4194304 0 dgramrcvbuf 0 8472 524288 576716 0 numothersock 180 182 720 720 0 dcachesize 952146 966231 5242880 5767168 0 numfile 3609 3683 8192 8192 0 dummy 0 0 0 0 0 dummy 0 0 0 0 0 dummy 0 0 0 0 0 numiptent 25 25 200 205 0 Is there some way I can throttle postfix to keep it from swamping the system like this? Also wondering: why does email use so many resources, these emails are just short text?

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  • Changing Windows Media Center StartRecording Task Scheduler options

    - by T Reddy
    Hi, I'm experiencing some occasional crashes waking from sleep and I believe it may be related to the Corsair SSD F40GB2 as my boot disk...or the new Ceton tuner I recently installed... I dunno what the real problem is as I can't reproduce the problem manually. I read somewhere that I should not allow the hard disks to sleep...so I'm trying that in the meantime... At any rate, I don't really care that the computer crashes so long as WMC will start recording the task as soon as possible...the task is scheduled to wake the computer 5 minutes before the recording starts. I noticed that there is a StartRecording param in the Media Center folder in Task Scheduler. There is an option (currently unchecked) that will retry a failed task. I would like to know if there is a way to enable that checkbox. My hope is that if my PC crashes when waking up for this task, that after it reboots the task will trigger again and start recording. Thanks!

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  • API Management Solutions

    - by Mike
    I'm currently building an API and am looking for a tool to allow me to monitor (in a GUI) and rate limit usage. I've come across a few enterprise solutions including: http://apigee.com/ http://mashery.com/ http://www.layer7tech.com/ http://www.3scale.net/ The Apigee enterprise plan is exactly what I'm looking for but plans start at $3000 / month which is out of my price range. The other solutions are all either to expense or do not provide the solution I'm looking for. This led me to look at some open source options including: http://apiaxle.com/ https://code.google.com/p/varnish-apikey/wiki/UsageManual Varnish seems like a fairly complete solution, however I would need to build a GUI to visualise the data. My final option would to build a solution from scratch using EventMachine and ruby. Any advice?

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  • which factors determines the speed of a processor? [closed]

    - by Deb
    I think that clock rate of processor determines the speed of core, in my case it is 1.86GHz. But If I am not wrong, it also determines that how much energy it will consume. If you have more frequency then more power it will consume. I choose Power Saver scheme to increase my battery life, however it reduces my core speed to half of the actual speed. I understand this happens because of SpeedStep, but I don't see any slowdown of my computer. So my problem is why we have such high frequency cores as it uses too much power. We can use low frequency cores. Actually I get confused between the two terms Speed of the processor and its frequency. So how much important is the frequency of core in case of any processor.

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  • Encode real-time dvb-s stream using mencoder

    - by karatchov
    My satellite receiver can stream the mpeg-2 video/audio output through lan. Using mencoder, I'm trying to build a script to encode and save the stream in real time with my Core2Duo 1.8 Ghz. Right now, I'm using a single pass, it produces good quality for a video rate of 800Kb/s, but takes more then 95% of CPU power, thus making a lot of frameskips is the computer is used while encoding. mencoder -o -vf lavcdeint -oac mp3lame -lameopts abr:q=2:aq=2 -ovc x264 -ffourcc avc1 -x264encopts crf=25:me=hex:subq=9:frameref=2:nocabac:threads=auto -mc 3 So, I'm considering using a 2-pass encoding to alleviate the processor and record 100% of the stream. But I have no idea how to start. For the info: Standard Stream: mpeg-2 720*576 25fps HD Stream: 1920*1080 50fps (this is not my goal to record it, but it will be super cool if I could)

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  • 3ds Max with Parallels on a MacBook Pro

    - by Eric Koslow
    I am trying to get 3ds Max to run under Parallels on my 15'' MacBook Pro, but it is ultimatly failing. To get any decent frame rate I have to put all the setting to low, but even then I get weird graphical "gliches" when I play. Controlls are unresponsive and very laggy as well. I have increased the video memory to 256mb, but that doesn't seem to have helped. What else should I do to make the game playable? Mod-edit: I changed TF2 with a "random" 3D modelling software, which solves gaming related issues.

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  • Can I speed up cygwin's fork?

    - by Andrew Aylett
    I came across a post discussing the speed of forking in Cygwin, giving an expected 'fork rate' in Windows XP of around 30-50 per-second (link) I've got a Core 2 duo (1.79GHz) which I would expect to get comparable results, but it's only managing around 8 forks per second (and sometimes a lot fewer): $ while (true); do date --utc; done | uniq -c 5 Wed Apr 21 12:38:10 UTC 2010 6 Wed Apr 21 12:38:11 UTC 2010 1 Wed Apr 21 12:38:12 UTC 2010 1 Wed Apr 21 12:38:13 UTC 2010 8 Wed Apr 21 12:38:14 UTC 2010 8 Wed Apr 21 12:38:15 UTC 2010 6 Wed Apr 21 12:38:16 UTC 2010 1 Wed Apr 21 12:38:18 UTC 2010 9 Wed Apr 21 12:38:19 UTC 2010 Can you suggest anything I might be able to do to speed things up? This machine acts a lot slower in Cygwin than others I've used before which actually were a lot slower.

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  • What is the data transfer speeds within the disk, to other devices?

    - by Kumar
    I use Debian 6 on a HP Elitbook 6930 with 2Gigs of RAM. I was copying two AVI files, 1.5 GB in total, and noticed that the data copying was done at the rate of 4MB/sec. When I copy same AVIs to my Western Digital Passport 25G USB plugin drive the data transfer speed is 11+MB/sec. This speed is different if I plugin the drive to different USB ports. Interestingly, at work I also downloaded a 16MB IE8 exe on my virtual xp, run inside Oracle Sun Virtual Box, and it was downloaded AND saved within a second. We have a high speed network at work. :-) Why and how this difference in data speeds is possible?

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  • Bad Performance when SQL Server hits 99% Memory Usage

    - by user15863
    I've got a server that reports 8 GB of ram used up at 99%. When restart Sql Server, it drops down to about 5% usage, but gradually builds back up to 99% over about 2 hours. When I look at the sqlserver process, its reported as only using 100k ram, and generally never goes up or below that number by very much. In fact, if I add up all the processes in my TaskManager, it's barely scratching the surface of my total available (yet TaskManager still shows 99% memory usage with "All processes shown"). It appears that Sql Server has a huge memory leak going on but it's not reporting it. The server has ran fine for nearly two years, with this only starting to manifest itself in the last 3-4 weeks. Anyone seen this or have any insight into the problem? EDIT When the server hits 99%, performance goes down hill. All queries to the server, apps, etc. come to a crawl. Restarting the service makes things zippy again, until 2 hours has passed and the server hits 99% once again.

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  • Online Storage and security concerns

    - by Megge
    I plan to set up a small fileserver. I already own a small server at HostEurope (VirtualServer L, 250GB space), but they don't offer enough space (there is the HostEurope Cloud, but paying for bandwidth isn't an option here, video-streaming should be possible) Requirements summarized: Storage: 2TB, Users: ~15, Filesizes: < 100GB, should be easily reachable (Mount as a networkdrive or at least have solid "communication" software) My first question would be: Where can I get halfway affordable online storages? And how should I connect them to my server? Getting an additional server is a bit overkill, as I know no hoster which allows 2 TB on a small 2 Ghz Dual Core 2 GB RAM thingy (that would be enough by far, I just need much space), and connecting it via NFS or FTP over Internet seems a bit strange and cripples performance. Do you have any advice where I could get that storage service from? (I sent HostEurope a custom request today, but they didn't answer till now. If they can provide me with that space, this question will be irrelevant, but the 2nd one is the more important one anway, don't do much more than recommend me some based on experience, you don't have to crawl hours through hosting services) livedrive for example offers 5 TB for 17€ / month, I'd be happy with 2 TB for 20 €, the caveat is: It doesn't allow multiple users, which leads me to my second question: Where are the security problems? Which protocol is sufficient (I want private and "public" folders etc. the usual "every user has its own and a public space"-thing), secure and fast? (I'd tend to (S)FTP, problem with FTP is: Most of those hosting services don't even allow FTP with mutliple users and single users lead me into "hacking" a solution (you could map the basic folder structure on the main server and just mount every subfolder from the storage, things get difficult with a public folder with 644 permissions though) Is useing something like PKI or 802.1X overkill for private uses?

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  • v4l - capture and watch at the same time

    - by John Barrett
    Capturing v4l and line-in audio using mencoder works very well, but I would like to record real-time gameplay video from consoles plugged into the video card. I've used xawtv for this (Works quite well, can preview and record in real time), but when I enable any deinterlacing or aspect ration options the video fails to record. I have to record raw and re-encode the video with the appropriate filters later to get something workable. Other things I have tried: tvtime with xvidcap and jack audio capture - xvidcap drops frames and muxing the audio is impossible as it will go out of sync (I have not found muxer options that work to force a correct frame rate) mencoder capture to file, attempt to pipe tail of file to mplayer... mencoder works great, piping the file is far too heavy to attempt gameplay. Soooo, v4l capture and preview simultaneously, recommendations?

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  • How do I send traffic from my Mac's wifi to my VPN client?

    - by Heath Borders
    I need to connect my Android to a Juniper VPN. Unfortunately, Juniper doesn't support Android on our VPN version. We've already put in a feature request for it, but we have no idea how long it will take to be complete. Right now, I connect to the Juniper VPN with a Juniper Mac OSX VPN client that uses Java to install kernel extensions to start and stop the VPN. Thus, I can't use the Network panel in System Preferences to create a VPN device, which means it won't show up in the 'Sharing' panel's Internet Sharing Share your connection from: menu, as suggested here. I used newproc.d to see what /usr/libexec/InternetSharing did when it ran, and it runs the following processes: 2013 Nov 1 00:26:54 5565 <1> 64b /usr/libexec/launchdadd 2013 Nov 1 00:26:55 5566 <1> 64b /usr/libexec/InternetSharing 2013 Nov 1 00:26:56 5568 <5566> 64b natpmpd -d -y bridge100 en0 2013 Nov 1 00:26:56 5569 <1> 64b /usr/libexec/pfd -d 2013 Nov 1 00:26:56 5567 <5566> 64b bootpd -d -P My Juniper VPN client creates the following devices (output of ifconfig): jnc0: flags=841<UP,RUNNING,SIMPLEX> mtu 1400 inet 10.61.9.61 netmask 0xffffffff open (pid 920) jnc1: flags=841<UP,RUNNING,SIMPLEX> mtu 1450 closed So, it seems like I should just be able to do this and have everything work: sudo killall -9 natpmpd sudo /usr/libexec/natpmpd -y bridge100 jnc0 My android connected fine and could hit public internet sites, but it couldn't hit private VPN sites. I assume this is because I need to change the routes that /usr/libexec/InternetSharing sets up. This is the output from sudo pfctl -s all before starting Internet Sharing: No ALTQ support in kernel ALTQ related functions disabled TRANSLATION RULES: nat-anchor "com.apple/*" all rdr-anchor "com.apple/*" all FILTER RULES: scrub-anchor "com.apple/*" all fragment reassemble anchor "com.apple/*" all DUMMYNET RULES: dummynet-anchor "com.apple/*" all INFO: Status: Disabled for 0 days 00:11:02 Debug: Urgent State Table Total Rate current entries 0 searches 22875 34.6/s inserts 1558 2.4/s removals 1558 2.4/s Counters match 2005 3.0/s bad-offset 0 0.0/s fragment 0 0.0/s short 0 0.0/s normalize 0 0.0/s memory 0 0.0/s bad-timestamp 0 0.0/s congestion 0 0.0/s ip-option 12 0.0/s proto-cksum 0 0.0/s state-mismatch 1 0.0/s state-insert 0 0.0/s state-limit 0 0.0/s src-limit 0 0.0/s synproxy 0 0.0/s dummynet 0 0.0/s TIMEOUTS: tcp.first 120s tcp.opening 30s tcp.established 86400s tcp.closing 900s tcp.finwait 45s tcp.closed 90s tcp.tsdiff 60s udp.first 60s udp.single 30s udp.multiple 120s icmp.first 20s icmp.error 10s grev1.first 120s grev1.initiating 30s grev1.estblished 1800s esp.first 120s esp.estblished 900s other.first 60s other.single 30s other.multiple 120s frag 30s interval 10s adaptive.start 6000 states adaptive.end 12000 states src.track 0s LIMITS: states hard limit 10000 app-states hard limit 10000 src-nodes hard limit 10000 frags hard limit 5000 tables hard limit 1000 table-entries hard limit 200000 OS FINGERPRINTS: 696 fingerprints loaded This is the output from sudo pfctl -s all after starting Internet Sharing: No ALTQ support in kernel ALTQ related functions disabled TRANSLATION RULES: nat-anchor "com.apple/*" all nat-anchor "com.apple.internet-sharing" all rdr-anchor "com.apple/*" all rdr-anchor "com.apple.internet-sharing" all FILTER RULES: scrub-anchor "com.apple/*" all fragment reassemble scrub-anchor "com.apple.internet-sharing" all fragment reassemble anchor "com.apple/*" all anchor "com.apple.internet-sharing" all DUMMYNET RULES: dummynet-anchor "com.apple/*" all STATES: ALL tcp 10.0.1.32:50593 -> 74.125.225.113:443 SYN_SENT:CLOSED ALL udp 10.0.1.32:61534 -> 10.0.1.1:53 SINGLE:NO_TRAFFIC ALL udp 10.0.1.32:55433 -> 10.0.1.1:53 SINGLE:NO_TRAFFIC ALL udp 10.0.1.32:64041 -> 10.0.1.1:53 SINGLE:NO_TRAFFIC ALL tcp 10.0.1.32:50619 -> 74.125.225.131:443 SYN_SENT:CLOSED INFO: Status: Enabled for 0 days 00:00:01 Debug: Urgent State Table Total Rate current entries 5 searches 22886 22886.0/s inserts 1563 1563.0/s removals 1558 1558.0/s Counters match 2010 2010.0/s bad-offset 0 0.0/s fragment 0 0.0/s short 0 0.0/s normalize 0 0.0/s memory 0 0.0/s bad-timestamp 0 0.0/s congestion 0 0.0/s ip-option 12 12.0/s proto-cksum 0 0.0/s state-mismatch 1 1.0/s state-insert 0 0.0/s state-limit 0 0.0/s src-limit 0 0.0/s synproxy 0 0.0/s dummynet 0 0.0/s TIMEOUTS: tcp.first 120s tcp.opening 30s tcp.established 86400s tcp.closing 900s tcp.finwait 45s tcp.closed 90s tcp.tsdiff 60s udp.first 60s udp.single 30s udp.multiple 120s icmp.first 20s icmp.error 10s grev1.first 120s grev1.initiating 30s grev1.estblished 1800s esp.first 120s esp.estblished 900s other.first 60s other.single 30s other.multiple 120s frag 30s interval 10s adaptive.start 6000 states adaptive.end 12000 states src.track 0s LIMITS: states hard limit 10000 app-states hard limit 10000 src-nodes hard limit 10000 frags hard limit 5000 tables hard limit 1000 table-entries hard limit 200000 TABLES: OS FINGERPRINTS: 696 fingerprints loaded It looks like I need to change the pf settings that /usr/libexec/InternetSharing set up, but I have no idea how to do that.

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  • How to know my wireless card has injection enabled?

    - by shrimpy
    I am playing around with aircrack. And was trying to see whether my wireless card on my laptop can pass the injection test And I end up seeing the following... does it mean my wireless card is not able to run aircrack? root@myubuntu:/home/myubuntu# iwconfig lo no wireless extensions. eth0 no wireless extensions. eth1 IEEE 802.11bg ESSID:"" Nickname:"" Mode:Managed Frequency:2.437 GHz Access Point: Not-Associated Bit Rate:54 Mb/s Tx-Power:24 dBm Retry min limit:7 RTS thr:off Fragment thr:off Power Management:off Link Quality=5/5 Signal level=0 dBm Noise level=-57 dBm Rx invalid nwid:0 Rx invalid crypt:781 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 root@myubuntu:/home/myubuntu# aireplay-ng -9 eth1 ioctl(SIOCSIWMODE) failed: Invalid argument ARP linktype is set to 1 (Ethernet) - expected ARPHRD_IEEE80211, ARPHRD_IEEE80211_FULL or ARPHRD_IEEE80211_PRISM instead. Make sure RFMON is enabled: run 'airmon-ng start eth1 <#>' Sysfs injection support was not found either. root@myubuntu:/home/myubuntu#

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  • Linux wget, how to display progress percentage after session has reload?

    - by skyrail
    I am running debian Squeeze in console mode on a plug computer. I control it opening an SSH session from a Windows machine, on the same local network. I started downloading a large file using wget. What I get is a console progress bar showing the percentage of data downloaded, file size, and download rate. When I close the session, debian is still running and downloading. Fine. But When I close and reopen a session, how can see which amount of data was downloaded, using a linux command ? thanks.

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  • how to best config for synflood setup in csf but web response still fast

    - by Binh Nguyen
    my server down random every day 4-5 time cause get high load very quick.. I have install csf and with some config server now stable.. load around 5. BUT the big isuse is : the real user very hard to access website specially from IE browser you can test at xaluan.com the flowing is config using in csf: SYNFLOOD = "1" SYNFLOOD_RATE = "100/s" SYNFLOOD_BURST = "10" CONNLIMIT = "80;30" PORTFLOOD = "80;tcp;70;5" CT_LIMIT = "29" # other config may same as default i playing around with this config for a week but still not work around.. If increase the rate SYNFLOOD_RATE = "140/s" or more.. the website response very fast.. be side have bad effect of server load increase so fast normal 20 and may be up to few hundred in peck time .. my need is response time fast but load still low.. please help thanks ps: server runing nginx frontend, apache, mysql, php ,, the home page has around 70 elements which will cached in browser in fist time access..

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  • How can I tell if my Amazon Windows instance was an SQL Server AMI?

    - by Aligma
    I want to purchase some reserved instances, because I have several instances already created and running 24 hours a day. When I go to purchase a Windows instance, I can see 3 options, Windows Windows with SQL Server Standard Windows with SQL server Web I don't know which of these was used to create the original instance. Is there a way I can find out? My assumptions: the instance type is is important because as far as I understand, the way to purchase a reserved instance is to first have a running instance, and then purchase a matching reserved instance. The reserved instance is not itself a new machine, but a kind of contract between you and Amazon to pay for an instance for 1 or 3 years, at a discounted rate. The contracted, reserved instance will "offset" one matching running instance where they have the same size and platform. Please feel free to correct me if these assumptions are incorrect.

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  • nVidia performance with newer X and newer driver abysmal with Compiz

    - by Nakedible
    I recently upgraded Debian to Xorg 2.9.4 and installed nvidia-glx from experimental, version 260.19.21. This was somewhat of an uphill battle as the dependencies for the experimental nvidia-glx package are still somewhat broken. I got it to work without forcing the installation of any packages and without modifying the packages. However, after the upgrade compiz performance has been abysmal. I am using the desktop wall plugin and switching viewports is really slow - takes a few seconds for each switch. In addition to this, every effect that compiz does, such as zoom animations for icons when launching applications, takes seconds. The viewport switching speed changes relative to the amount of windows on that virtual screen - empty screens switch almost at normal speed, single browser windows work almost decently, but just 4 rxvt terminals slows the switches down to a crawl. My compiz configuration should be pretty basic. Xorg is likewise configured without anything special - the only "custom" configuration is forcing the driver name to be "nvidia". I've fiddled around with the nvidia-settings and compizconfig trying different VSync settings, but none of those helped. My graphics card is: NVIDIA GPU NVS 3100M (GT218) at PCI:1:0:0 (GPU-0). This is laptop GPU that is from the Geforce GTX 200 series. Graphics card performance should naturally be no problem.

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  • weird POST request in IIS logs

    - by MIrrorMirror
    I noticed weird log entries (unless there's something i don't understand) in my IIS (7.5) logs. it's an online dictionary with requests ( user friendly url rewriting ) and most of them are GET. However I noticed weird POST requests which are taking place by a person who is trying to crawl our content ( tens of thousands of such requests ) 2013-11-09 20:39:27 GET /dict/mylang/word1 - y.y.y.y Mozilla/5.0+(compatible;+Googlebot/2.1;++http://www.google.com/bot.html) - 200 296 2013-11-09 20:39:29 GET /dict/mylang/word2 - z.z.z.z Mozilla/5.0+(iPhone;+CPU+iPhone+OS+6_0+like+Mac+OS+X)+AppleWebKit/536.26+(KHTML,+like+Gecko)+Version/6.0+Mobile/10A5376e+Safari/8536.25+(compatible;+Googlebot-Mobile/2.1;++http://www.google.com/bot.html) - 200 468 2013-11-09 20:39:29 POST /dict/mylang/word3 - x.x.x.x - - 200 2593 The two first requests are legal. Now for the third request, I don't think I have allowed cross domain POST. if that what the third log line means. all those POST requests take that much time for unknown reasons to me. I would like to know how are those POST requests possible and how can I stop them. p.s. I have masked the IPs on purpose. any help would be appreciated! thank you in advance.

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  • Blurry Digital TV Signal in Media Center

    - by hazmat
    I recently reformatted my box and I reinstalled XP Media Center 2005. My TV signal is perfect if I plug it directly into the tv; and at any rate even shows I recorded previous to the reformat are blury. I have installed all updates (including Media Player 11) and I have installed a codec pack for different file types. I have no clue why it wouldn't display right. When I play the previously recorded shows in VLC they come out perfectly clear... Any ideas?

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  • x11vnc is slow, but using only 10% of available bandwidth

    - by mmm
    I am using x11vnc over 15Mbit/s network with 20ms latency. When the screen is changing a lot x11vnc is slow - for example when I switch a tab in a browser, it takes almost two seconds until the view is fully redrawn. The strange thing is that max connection speed of x11vnc is even during slow redrawing only about 10% of the available bandwidth. Why is x11vnc not using available bandwidth to speed the redrawing up? For example scp is using 100% of available bandwidth without problems. How can I identify what is the bottleneck for x11vnc on my system? So far I think: 10% network usage = network is not a bottleneck fb read rate: 601 MB/sec = reading fb is not a bottleneck Any ideas how can I further profile x11vnc and find out what is causing a slowdown? For example is there any switch for x11vnc to show how much data it is handling and how long it takes to grab a screen, process and compress it and send it over the network?

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  • Locating memory leak in Apache httpd process, PHP/Doctrine-based application

    - by Sam
    I have a PHP application using these components: Apache 2.2.3-31 on Centos 5.4 PHP 5.2.10 Xdebug 2.0.5 with Remote Debugging enabled APC 3.0.19 Doctrine ORM for PHP 1.2.1 using Query Caching and Results Caching via APC MySQL 5.0.77 using Query Caching I've noticed that when I start up Apache, I eventually end up 10 child processes. As time goes on, each process will grow in memory until each one approaches 10% of available memory, which begins to slow the server to a crawl since together they grow to take up 100% of memory. Here is a snapshot of my top output: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1471 apache 16 0 626m 201m 18m S 0.0 10.2 1:11.02 httpd 1470 apache 16 0 622m 198m 18m S 0.0 10.1 1:14.49 httpd 1469 apache 16 0 619m 197m 18m S 0.0 10.0 1:11.98 httpd 1462 apache 18 0 622m 197m 18m S 0.0 10.0 1:11.27 httpd 1460 apache 15 0 622m 195m 18m S 0.0 10.0 1:12.73 httpd 1459 apache 16 0 618m 191m 18m S 0.0 9.7 1:13.00 httpd 1461 apache 18 0 616m 190m 18m S 0.0 9.7 1:14.09 httpd 1468 apache 18 0 613m 190m 18m S 0.0 9.7 1:12.67 httpd 7919 apache 18 0 116m 75m 15m S 0.0 3.8 0:19.86 httpd 9486 apache 16 0 97.7m 56m 14m S 0.0 2.9 0:13.51 httpd I have no long-running scripts (they all terminate eventually, the longest being maybe 2 minutes long), and I am working under the assumption that once each script terminates, the memory it uses gets deallocated. (Maybe someone can correct me on that). My hunch is that it could be APC, since it stores data between requests, but at the same time, it seems weird that it would store data inside the httpd process. How can I track down which part of my app is causing the memory leak? What tools can I use to see how the memory usage is growing inside the httpd process and what is contributing to it?

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  • Ubuntu server very slow out of the blue sky (Rails, passenger, nginx)

    - by snitko
    I run Ubuntu server 8.04 on Linode with multiple Rails apps under Passenger + nginx. Today I've noticed it takes quite a lot of time to load a page (5-10 secs). And it's not only websites, ssh seems to be affected too. Having no clue why this may be happening, I started to check different things. I checked how the log files are rotated, I checked if there's enough free disk space and memory. I also checked IO rate, here's the output: $ iostat avg-cpu: %user %nice %system %iowait %steal %idle 0.17 0.00 0.02 0.57 0.16 99.07 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn xvda 2.25 39.50 16.08 147042 59856 xvdb 0.00 0.05 0.00 192 0 xvdc 2.20 25.93 24.93 96530 92808 xvdd 0.01 0.12 0.00 434 16 xvde 0.04 0.23 0.35 858 1304 xvdf 0.37 0.31 4.12 1162 15352 Rebooting didn't help either. Any ideas where should I be looking?

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  • Ultrium 3 tape drive shoe-shining, 3Mb/s: and it's not the cable

    - by mowsala
    I have a HP 960 Ultrium 3 tape drive. Since I got it, (second hand, £90) I've been experiencing shoe-shining. Writing with tar in Linux, I average about 3Mb/s write speed. I've tried replacing both the SCSI card and the cable now, both of which made no difference at all. A curiuos observation I have made is that the write rate is not consistent. Sometimes it will write for over a minute without shoeshining, but more often, just a few seconds. I've also tried several tapes, different source drives, and even writing from Windows Backup, to no avail.

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