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• "Task Manager" addon for Firefox?

  - by eidylon

  Hello all... I'm wondering if there is an addon for Firefox that would basically replicate the performance monitoring of Task Manager in Windows - seeing memory and cpu used - but for all the tabs in your current Firefox session. I want to be able to see which tabs are taking up the most memory or hitting hardest on the CPU. Thanks in advance!

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• ASPNET WMI class not available

  - by Nexus

  I need to extract the ASPNET\Requests Queued performance counter from some IIS servers via WMI. The WMI class for this sort of thing appears to be contained in Win32_PerfFormattedData_ASPNET_ASPNET. I've queried all available classes in root\cimv2 on my Win 2003/IIS6 servers, and it's not listed. It is, however, available on an unrelated…

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• IRP_MJ_WRITE latency up to 15 seconds

  - by racitup

  We have written an application that performs small (22kB) writes to multiple files at once (one thread performing asynchronous queued writes to multiple locations on behalf of other threads) on the same local volume (RAID1). 99.9% of the writes are low-latency but occasionally (maybe every minute or two) we get one or two huge latency…

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• Why does jmeter not work?

  - by Foolish

  I use jmeter to record requests and then perform a performance test after it records all the requests with proxy server. These requests contain a post form. After that I run the test cases, but I found the post form doesn't work -- it cannot create a record in the website's database automatically. But before that I used Webload and…

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• Any reason not to disable Windows kernel paging?

  - by Nathaniel

  So I'm planning on eventually going to 2 GB (mobo max) RAM from 1 GB, and I want to disable kernel paging once I do, because I've heard it can give a performance boost (and that I believe). Any reason not to do it or any general thoughts about it? Edit: for clarification, this is not disabling general RAM paging. This is disabling…

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• How to correctly partition usb flash drive and which filesystem to choose considering wear leveling?

  - by random1

  Two problems. First one: how to partition the flash drive? I shouldn't need to do this, but I'm no longer sure if my partition is properly aligned since I was forced to delete and create a new partition table after gparted complained when I tried to format the drive from FAT to ext4. The naive answer would be to say "just use…

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• Android emulator performance on linux

  - by Rado

  I installed the android SDK and eclipse plugin on my laptop, but I was surprised to find out that the emulator eats up 100% of one of my cpu cores. I have exactly the same setup on a desktop machine that does not have this issue. Both computers are running arch linux and both were updated yesterday. Granted, the desktop has…

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• is there anyway to know if your supposedly fully dedicated server is really a virtually resource-sha

  - by siran

  Hi, sometimes I feel my server not responding as smoothly as I would expect (i have a Intel(R) Xeon(TM) CPU 2.80GHz Quad Core), given that for example, the 'top' commands reports a low load < 0.5, CPU are almost completely idle ... I maybe have internet connectivity issues, so I don't really know if it's me or if it's the…

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• SAS Array with or without expander

  - by tegbains

  Is it better to use a SAS Expander backplane for 12 drives via one SAS connection or is it better to use a SAS backplane with 3 SAS connections? This is in terms of performance, rather than expansion. This array will be setup using ZFS on a OpenSolaris via a LSI SAS controller as an iSCSI target. The two products being…

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• Slow Windows Explorer on Windows 7

  - by MadBoy

  I have Laptop with i7 (4 cores), 8GB ram and SSD OCZ Vertex 3 MaxIOPS which in testing that I did just now does 400mb/s+ read/write. However the responsiveness of Windows Explorer is far from being perfect. Opening up Computer, Documents, going into folders is very slow (1-5seconds). I don't have any viruses or…

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• Speed of TrueCrypt whole disk encryption

  - by Gareth

  I'm getting a new development laptop soon, and I'm thinking of using TrueCrypt to encrypt the whole disk. What kind of performance drop can I expect? 10%? 30%? more? Also, assuming the workload has an effect, would compiling/using Visual Studio be affected much? I cannot seem to find anything like this on the…

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• Application to test a cluster/grid

  - by Mystic

  Is anyone aware of any application (computation + data) that I can download to test an in-house grid middleware that will run on a local cluster. I hope to compare the performance with other available grid systems.

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• Any reason not to disable Windows kernel paging?

  - by Nathaniel

  So I'm planning on eventually going to 2 GB (mobo max) RAM from 1 GB, and I want to disable kernel paging once I do, because I've heard it can give a performance boost (and that I believe). Any reason not to do it or any general thoughts about it? Edit: for clarification, this is not disabling general RAM…

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• How to monitor the total number of SQL Server logins

  - by Shiraz Bhaiji

  We have an SQL Server 2005 that is the backend of a web application. The application is partly SharePoint and partly web services accessing the database via Entity Framework. In the performance monitor I am seeing average SQL Logins is ca, 60 per second (max 170), but the average logouts is less than 1. …

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• How to: mirror a staging server from a production server

  - by Zombies

  We want to mirror our current production app server (Oracle Application Server) onto our staging server. As it stands right now, various things are out of sync, and what may work in testing/QA can easily fail in production because of settings/patch/etc inconsistencies. I was thinking what would be best is…

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• Looking for CDN Comparison

  - by David Andersson

  I can't seem to find a good performance comparison of different CDN services, like CloudFront, Limelight etc. Anyone's got a good link?

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• Why are there many processes listed under the same title in htop?

  - by javanix

  Can anyone explain to me why there are sometimes 10 or 15 processes with the same title and "stats" listed in htop? I'm guessing there are multiple threads running - but that many of them obviously couldn't be running concurrently. Is there any sort of performance hit taken if a process uses say, 15…

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• Why is my new Phenom II 965 BE not significantly faster than my old Athlon 64 X2 4600+?

  - by Software Monkey

  I recently rebuilt my 5 year old computer. I upgraded all core components, in particular from an Athlon 64 X2 4600+ at 2.4 GHz with DDR2 800 to a Phenom II 965 BE (quad core) at 3.6 GHz with DDR3 1333 (actually 1600, but testing consistently detected memory errors at 1600). The motherboard is also…

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• No architecture vs architecture-specific binaries

  - by Aaron

  From what I understand, the noarch suffix means that it's architecture independent and should work universally. If this is the case, why should I install architecture-specific packages at all? Why not just go straight for the noarch? Are there optimizations in the x86 or x64 binaries that aren't…

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• Web Service gets unavailable after several concurrent calls

  - by Roman

  We are testing GoDaddy Virtual Data Center and came to a very strange issue when our web site gets unavailable. GoDaddy Support keeps saying the issue is in our web server settings, but looking at the result of our tests I doubt it. TEST ENVIRONMENT Virtual DataCenter with Windows hosted at…

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• Any simple tools for re-loading a specified web page periodically (Windows)?

  - by Luke

  I've got a website that is exhibiting slow performance on the first load and would like to attempt to load it every 5 minutes or so to keep the cache fresh. Are there any simple tools to accomplish this? Scheduled tasks doesn't have quite the time resolution I need. The tricky thing is that…

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• Generate a limited amount of random network traffic between 2 hosts

  - by Andrew S

  I'm trying to find a utility that will allow me to generate a constant flow of random network traffic at a specified rate between 2 hosts. The utility needs to run on Windows and OSX. I've tried iperf but it seems to be more oriented toward short-term testing/statistics and it really taxes…

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• Can I enable discards on a LUKS-encrypted ssd drive in RHEL6 (and do I need to)?

  - by Dan Nestor

  I have a RHEL 6.4 workstation, running on a LUKS-encrypted LV residing on a SSD. I found RedHat documentation stating that dm_crypt does not currently support TRIM passthrough, however I also found other sources that state the opposite (albeit for other distributions) and even that…

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• Can anybody recommend a Windows system monitoring tool similar to iPulse for the Mac?

  - by John MacIntyre

  Occasionally, my PC grinds to a halt, and by the time I get any monitoring tools open (don't forget my PC is slow at this point), performance has picked up a bit. A friend recently told me he uses iPulse, which is awesome since it's always running, and you can just glance at it…

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• What is good usage scenario for Rackspace Cloud Files CDN (powered by AKAMAI) [closed]

  - by Andrew Smith

  I have just setup my website as static page via Rackspace CDN / Akamai. www.example.co.uk is an alias for d9771e6f24423091aebc-345678991111238fabcdef6114258d0e1.r61.cf3.rackcdn.com. d9771e6f24423091aebc-345678991111238fabcdef6114258d0e1.r61.cf3.rackcdn.com is an alias for…

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