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  • Monitoring outgoing bandwidth of application

    - by jnolte
    I currently have a VPS that is consuming a ton of outgoing bandwidth and I am trying to drill down to where this may be coming from. Does anyone know of a logical way to go about finding out which pages on the site are consuming the most outgoing data. We have done a ton of front-end optimizations to the site and our google page speed rankings ar 85% so I feel we have done a pretty great job at optimizing the site for speed. Can someone lend some insight on how they have made similar optimizations? Application / Server Stack LEMP Running Varnish Cache / PHP5-FPM WordPress running w3 Total Cache Ubuntu 12.04 LTS

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  • Slow speeds on Samsung SSD PM800 256gb on a Lenovo W500

    - by cc0
    I recently bought a W500 with a 256gb samsung ssd drive. Now it seems ridiculously slow at writing. I am copying files at about 30mb/s, but I can read them at about 200mb/s. I tested it with the AS SSD Benchmark v1.4, and got a sequential writing speed of 34.64mb/s and reading speed of 196.95mb/s When I bought it the drive had only been in use for about 240 hours, and according to the CrystalDiskInfo app it had 98% health. Is there a bottleneck here somewhere? Or is the drive just plain bad. I'd really love it if someone could help me find some answers. The main relevant (I hope) w500 specs for this machine are; T9600 @ 2.8ghz 4gb ddr3

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  • Why does my Mac always crash when I enable `ask for password after screensaver ended`?

    - by Koning Baard XIV
    I have enabled these two things: Placing the mouse-pointer in the bottom-left corner of any display makes the screensaver appear After the screensaver or stand-by has ended, ask for password However, this combination always leads to this (Black Screen of Death) after entering the screensaver with the bottom-left corner: Here are my system specs: Hardware Overview: Model Name: iMac Model Identifier: iMac9,1 Processor Name: Intel Core 2 Duo Processor Speed: 2,66 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache: 6 MB Memory: 2 GB Bus Speed: 1,07 GHz Boot ROM Version: IM91.008D.B08 SMC Version (system): 1.44f0 Serial Number (system): W89171JF0TF Hardware UUID: 323A90F0-8A2F-5057-B501-2087489E0DFF System Software Overview: System Version: Mac OS X 10.6.3 (10D573) Kernel Version: Darwin 10.3.0 Boot Volume: Macintosh HD Boot Mode: Normal Computer Name: YOU SHOULD NOT KNOW THIS User Name: YOU SHOULD NOT KNOW THIS Secure Virtual Memory: Not Enabled 64-bit Kernel and Extensions: No Time since boot: 11:46 Can anyone help me? Thanks

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  • File downloaded from IIS6/Win2003 server to a Mac (and not PCs) is incredibly slow

    - by Simon Swords
    We have a test zip file on our customers server that we host for him that when downloading to a Mac is incredibly slow. On a Mac - trying the download via Safari 5.0.3 and Chrome 8.0.552.231 results in a quick burst of normal download speed then plummets to almost no speed at all after 1 or 2 meg (between 1 and 5 Kb/s - yes, KiloBITS per second! According to the network monitor). Downloading via Windows was fine and speedy. Tested via; IE7 7.0.5730.13 and Chrome Portable 8.0.552.224 On Windows XP Pro, and; IE8 8.0.7600.16385 in a Windows 7 virtual machine running via VirtualBox 4.0.0 r69151 on the same Mac mention above Google hasn't helped us out on this occasion, possibly because the search terms I'm having to use are quite generic. Has anybody ever experienced this and if so how do we fix it? Thanks in advance

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  • dev_install failed on ARM chromebook

    - by user1027721
    I'm trying this guide for having access to emerge on chromeos. http://www.chromium.org/chromium-os/how-tos-and-troubleshooting/install-software-on-base-images Unfortunately I always got the same error which is $ sudo dev_install Starting installation of developer packages. First, we download the necessary files. Downloading https://commondatastorage.googleapis.com/chromeos-dev-installer/board/daisy/full-3.168.0.0/packages/app-misc/mime-types-8.tbz2 % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 127 100 127 0 0 252 0 --:--:-- --:--:-- --:--:-- 305 [: 184: -ne: unexpected operator Extracting /usr/local/portage/packages/app-misc/mime-types-8.tbz2 I think that it somehow returns a 404 everytime. Thanks for your help

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  • Why does a website server recieve local files much slower than recieve files on other websites?

    - by T...
    The server at http://any2djvu.djvuzone.org receives same files from local computers much slower than from links on other websites (with the same files have been uploaded to the other websites, such as dropbox.com). The speed of uploading a file from local computers to other websites such as dropbox is also much faster than to any2djvu website. For example, a pdf file of 17MB needs more than 1 min to be uploaded to any2djvu server from a local computer with normal ISP such as Comcast High-speed internet, but takes less than 3 seconds from a dropbox link to any2djvu server, and takes around 10 seconds from the same local computer to dropbox. I wonder why there is such big differences for the speeds of different uploading ways to a web server? Thanks!

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  • Options for installing software on Amazon EC2 Windows instances

    - by gareth_bowles
    I've been running Linux servers on Amazon EC2 for a while now; the experience has been great. I've recently needed to bring up a Windows server to run some Windows-only software that our product needs to use, and am running into a problem figuring out how to install the software, which is only available on DVD. With Linux I can just install packages from a Web-based repository and take advantage of EC2's fast network throughput, but so far on the Windows instance I've had to upload my ISO images to EC2 and mount them from the Windows EC2 instance. For some reason I'm getting really slow upload speeds to EC2, even though the regular upload speed from our office is pretty good (around 7Mbps). I've also tried mounting the DVD drive on my machine as a local drive on the EC2 instance via Remote Desktop, and then running the software install from the local drive, but I run into the same slow upload speed issue. Does anyone have a better way to install software from physical media onto an EC2 instance ?

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  • NTFS disk mounted as fuseblk in ubuntu 12.10 is very slow and a lot of errors when rsync. Is that not a rare thing?

    - by Pablo Marin-Garcia
    I am having problems with a NTFS disk mounted as a fuseblk in my ubuntu 12.10 through external usb3. When I did a 1.1TB backup with rsync the speed was 1-2MB/s (wiht a ext4 disk speed was 70 MB/s before and after trying the NTFS disk). Also after one hour errors started to appear: rsync: write failed on "xxx": No such file or directory recv_files: "yyy" is a directory #but this file is a FILE not a dir ??!! .... As this is the first time I have mounted the NTFS in linux for heavy usage (the data would be used in windows afterwards), I would like to know if this kind of thinks are common o was only that something became unstable in my system and a simply restart would probably have solved it. This leads me to the these questions: Can I trust fuse for manage NTFS disks? Or is a problem of the NTFS tools in linux not yet totally stables for writing? Do people is still suffering from low performance with fuse-NTFS vs ext4 (in the past I have read about people complaining about this)?

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  • Performance affects of compressing Program Files on Windows / NTFS

    - by SRobertJames
    What are the performance affects of compressing Program Files on Windows NTFS? On a fast, multicore machine, the overhead of decompression is minimal. Machines are generally disk bound, and if you can reduce the disk load by compression, you often speed things up. (Microsoft says that the built in compression of Windows Search indexes actually improves speed for this reason.) On the other hand, Windows' virtual memory is complicated. Perhaps if files are compressed, they can't be paged out simply. And there may be other issues. In short: On a fast, multicore machine with a relatively slow disk, what performance affects will compressing Program Files have?

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  • Tips on Managing Podcast Subscriptions

    - by Ben Griswold
    I listen to a silly number of technical podcasts. I listen to enough of them that it is literally impossible to keep up. I nearly gave up and started dropping feeds from my subscription list when I heard Craig Shoemaker talk about his Polymorphic Podcast fast feed. The idea is he provides the same content at a higher speed so you can listen to his complete show in 3/4th the time. I tried it out with his recent jQuery Secrets with Dave Ward interview and I was shocked with the feed quality. It was a super clear, understandable conversation which only took a fraction of the time commitment. I experimented a bit and played the normal recording at 2x speed on my iPhone and the quality was once again just fine. But now I'm saving half of the time. I'm curious as to how you might manage your podcast subscriptions. Can you offer any tips or advice on how to get the best bang for your buck when it comes to technical podcast listening?

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  • serving static assets via http is really slow compared to sshfs (apache2/nginx)

    - by s1lv3r
    After migrating to a new VPS I had some users complaining about slow loading images on their sites. After creating some test files with dd I realized that I can download all files via sshfs with full speed while downloads via web are painfully slow. The larger the file is and the longer the transfer takes, the slower the transfer speed gets. I thought I had some problems with Apache and just spend the whole evening with replacing Apache2 against nginx for static file serving - with no effect at all. No I/O wait states in top. Tons of RAM free, no high CPU utilization and hdparm shows a decent I/O performance at all times. I just have no idea anymore, what's happening on this server. This is a link to a demo file: http://master.dealux.de/file.tgz Anybody an idea what I can check out?

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  • Link aggregation with freebsd8 and a cicso 3550, what am i doing wrong?

    - by Flamewires
    Hey, I am trying to setup Link Aggrigation with LACP (well, anything that provides increased bandwidth and failover using my setup will work). I'm running FreeBSD 8.0 on 3 machines. M1 is running 2 10/100 ethernetcards setup for link aggrigation using lagg. for reference: ifconfig em0 up ifconfig tx0 up ifconfig create lagg0 ifconfig lagg0 laggproto lacp laggport tx0 laggport em0 192.168.1.16 netmask 255.255.255.0 I plugged them into ports 1 and 2 of a Cicso 3550. then ran: configure terminal interface range Fa0/1 - 2 switchport mode access switchport access vlan 1 channel-group 1 mode active (everythings in vlan 1) Now Im able to connect the other computers to other ports on the switch and failover works great, i can unplug cables in the middle of a transfer and the traffic gets rerouted. However, im not noticing any speed increase. My test setup: load balancing: i tried dst and src on the switch, neither seemed to give me a speed increase. I am SCPing 2 500 meg files from the lagg computer to other computers (one each) which are also running 10/100 full duplex cards. I get transfer speeds of about 11.2-11.4 Mbps to a single host, and about half that (5.9-6.2) Mbps when transferring to both at the same time. From what I understood with destination load balancing the router was suppose to balance traffic headed for 1 computer over 1 port and traffic headed for another over a diff(in this case) the other port. With destination-MAC address forwarding, when packets are forwarded to an EtherChannel, the packets are distributed across the ports in the channel based on the destination host MAC address of the incoming packet. Therefore, packets to the same destination are forwarded over the same port, and packets to a different destination are sent on a different port in the channel. For the 3550 series switch, when source-MAC address forwarding is used, load distribution based on the source and destination IP address is also enabled for routed IP traffic. All routed IP traffic chooses a port based on the source and destination IP address. Packets between two IP hosts always use the same port in the channel, and traffic between any other pair of hosts can use a different port in the channel. (Link) What am i doing wrong/what would i need to do to see a speed increase beyond what i could do with just a single card?

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  • What does the "Maximum Frequency" number mean in the Windows Resource Monitor?

    - by nhinkle
    In the Windows Resource Monitor's CPU tab, there is a status box and graph for the "Maximum Frequency", right next to the "CPU Usage" values. What does this mean? The value is sometimes over 100% on my system... what could that imply? By looking at CPU-z's real-time report of the processor's clock speed, it seems to be loosely related to what frequency the CPU is running at, which would imply that it means "percent of maximum possible frequency the CPU is running at"; this would be of relevance on systems with SpeedStep and/or TurboBoost technology (or similar). Furthermore, setting the system to "power saving mode" lowers the "maximum frequency" value to around 60%, while setting it to "high performance" mode sets it to around 110%. However, the percentage does not seem to exactly correlate to the CPU speed being shown. What value is this actually representing then?

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  • What is the best free software to learn touch-typing?

    - by gojira
    What is the best free software to learn touch-typing? Features it needs to have: should NOT display the keyboard layout on the screen! should give detailed statistics which actually measure progress (for which key do I have the highest error rate, graphs showing how typing speed improved over time, etc) should enable me to actually learn touch-typing in about one long weekend were I don't do much else than learning to touch-type. it would be very good if it were possible to load a text-file and the program will use words from the text-file for the exercises as well My goals are: at least same typing speed as I have now but which touch-typing, want to be able to look at the screen only when typing P.S.: EDIT: I forgot to mention, I'm using Win 7. And I know what the Dvorak and Colemak keyboard layouts are, but I'm not interested in them. My question was with respect to standard US keyboard layout.

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  • Is LiveDrive.com reliable?

    - by Marc
    I'm currently using DropBox (50GB account) which works fine, but at this moment I'm not impressed with its speed. I have a 60down/6up connection and only LiveDrive can use almost the full bandwidth of my connection. Dropbox often is very slow (avg. 100-500Kb/s compared to LD at 6MB/s). If I only look at the speed and storage costs then LD is much better, but I don't have enough experience with LD to be able to say something about reliability. Can anyone comment on this? Thx.

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  • What is this dm-0 device?

    - by Jeff Shattock
    While poking around trying to figure out why a Linux - Linux file transfer is running slower than I think it should, I stumbled across something I'm not familiar with. /dev/dm-0 seems to be my bottleneck, but I have no idea what it is. On my destination server, the iostat command shows a device at the bottom, /dev/dm-0, as being 100% utilized. This server has 6 disks in a mdadm raid5 set, with LVM running on top of it. Each of the underlying disks are sitting around 50% util. The transfer is writing to a logical volume located on this raidset. What is this /dev/dm-0 thing? Once I know what it is, maybe I can find how to increase its speed, or at least understand why its the speed that it is.

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  • How can you get internet on a train?

    - by Ivan Petrushev
    Hello, There are some rail road companies offering an internet connection to their customers. How can they do it? What kind of internet connection can they have on board a moving vehicle? Satellite connection? I think the train movement will displace a mounted dish and it also will have to be constantly moved around to find the satellite as the train makes turns. Speed isn't greater either. GSM connection - EDGE, UMTS, CSD? 3G coverage often is not an option in rural areas where train goes. These kinds of technologies doesn't offer good speed. WiMax? Wikipedia article on it says it could provide 40Mbps for long distances. Is that what they use mostly? Some kind of power line internet carrier?

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  • Grouping records from while loop | PHP

    - by Wayne
    I'm trying to group down records by their priority levels, e.g. --- Priority: High --- Records... --- Priority: Medium --- Records... --- Priority: Low --- Records... Something like that, how do I do that in PHP? The while loop orders records by the priority column which has int value (high = 3, medium = 2, low = 1). e.g. WHERE priority = '1' The label: "Priority: [priority level]" has to be set above the grouped records regarding their level

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  • php slideshow sample

    - by serhio
    I try to do a simple image slideshow in php (just cycle images, no links, no other effects). after some googling I found the following in net: <HTML> <HEAD> <TITLE>Php Slideshow</TITLE> <script language="javascript"> var speed = 4000; // time picture is displayed var delay = 3; // time it takes to blend to the next picture x = new Array; var y = 0; <?php $tel=0; $tst='.jpg'; $p= "./images"; $d = dir($p); $first = NULL; while (false !== ($entry = $d->read())) { if (stristr ($entry, $tst)) { $entry = $d->path."/".$entry; print ("x[$tel]='$entry';\n"); if ($first == NULL) { $first = $entry; } $tel++; } } $d->close(); ?> function show() { document.all.pic.filters.blendTrans.Apply(); document.all.pic.src = x[y++]; document.all.pic.filters.blendTrans.Play(delay); if (y > x.length - 1) y = 0; } function timeF() { setTimeout(show, speed); } </script> </HEAD> <BODY > <!-- add html code here --> <?php print ("<IMG src='$first' id='pic' onload='timeF()' style='filter:blendTrans()' >"); ?> <!-- add html code here --> </BODY> </HTML> but it displays only the first image from the cycle. Do I something wrong? the resulting HTML page is: <HTML> <HEAD> <TITLE>Php Slideshow</TITLE> <script language="javascript"> var speed = 4000; // time picture is displayed var delay = 3; // time it takes to blend to the next picture x = new Array; var y = 0; x[0]='./images/under_construction.jpg'; x[1]='./images/BuildingBanner.jpg'; x[2]='./images/littleLift.jpg'; x[3]='./images/msfp_smbus1_01.jpg'; x[4]='./images/escalator.jpg'; function show() { document.all.pic.filters.blendTrans.Apply(); document.all.pic.src = x[y++]; document.all.pic.filters.blendTrans.Play(delay); if (y > x.length - 1) y = 0; } function timeF() { setTimeout(show, speed); } </script> </HEAD> <BODY > <!-- add html code here --> <IMG src='./images/under_construction.jpg' id='pic' onload='timeF()' style='filter:blendTrans()' ><!-- add html code here --> </BODY> </HTML>

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  • Windows Swap (Page File): Enable or Disable?

    - by d03boy
    From my personal experience I've noticed that disabling the page file in Windows XP has given me, in general, the most speed gain out of any other software change I can make. Obviously this has to be done when a significant amount of RAM is available. Typically I find that it works nicely with +2GB of RAM. The only issues I've ever really had were loading up Adobe Photoshop. Is this really a speed improvement or am I imagining it? Note: In order to actually turn it off, you must not just set it to 0MB, but disable it. Otherwise Windows will just expand it when it needs to in order to meet its needs.

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  • Can't access USB drive anymore

    - by marie
    I have a 32 GB Lacie Cookey USB flash disk that doesn't show in the Computer window but it's visible as a device. cmd > diskpart DISKPART> list disk Disk ### Status Size -------- ------------- ------ Disk 0 Online 149 G Disk 1 No Media 0 DISKPART> select disk 1 Disk 1 is now the selected disk. DISKPART> clean Virtual Disk Service error: There is no media in the device. It also appears in the Disk Management tool, but the box is empty. Is there anything I can do or is it dead? ............................................................ output from ChipGenius: Description: [F:]USB Mass Storage Device(LaCie CooKey) Device Type: Mass Storage Device Protocal Version: USB 2.00 Current Speed: High Speed Max Current: 200mA USB Device ID: VID = 059F PID = 103B Serial Number: 070535924B170C18 Device Vendor: LaCie Device Name: CooKey Device Revision: 0100 Manufacturer: LaCie Product Model: CooKey Product Revision: PMAP Controller Vendor: Phison Controller Part-Number: PS2251-67(PS2267) - F/W 06.08.53 [2012-09-26] Flash ID code: 983AA892 - Toshiba [TLC] Tools on web: http://dl.mydigit.net/special/up/phison.html

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  • RAID0 array of USB 2 disks, both connected to a single hub. Any benefit?

    - by Josh
    I have two unused USB 2 drives. I wanted to stripe them in a RAID0 configuration for fast disk access for virtual machines. (I find running a VMware virtual machine off a USB2 drive to be painfully slow. Especially Windows Vista) If I have both USB drives attached to the same USB2 hub, will that negate any benefit I gain by creating a RAID0 array? That is to say, is the speed of USB2 the limiting factor or is the speed of the drives? Would I get better performance by attaching one or both drives directly to my computer?

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