For questions concerning computer, or computer-related, performance. Please include metrics in your questions.

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59 views

Obligatory reset after booting windows, afterwards periodical slowdowns apparent

Whenever I first boot up my PC it needs a hard reset, as it becomes unresponsive immediately after finishing loading Windows (the point where you'd expect to begin working). After this initial reboot, ...
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16 views

Making windowed performance same as full-screen?

As you all well know, running software (let's say some demanding game) in a windowed mode drastically reduces the performance of the application (framerate), presumably because of the desktop, ...
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221 views

Why does my PC slow down to a crawl when VMware and ntoskrnl.exe is writing to a data drive?

My PC becomes almost unusable when writing to my data drive. The main suspect which exhibits this issue is VMware Player. The problem does not happen when I myself move files in Windows Explorer or do ...
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28 views

Windows will not open processes

I recently I come upon an unexplainable issue concerning my Windows 7 partition. When I woke up Thursday morning and logged into Windows, I discovered that it was acting really slow. It didn't take ...
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1k views

Slow File Transfer over Gigabit Network

There are a few computers connected to a computer (Windows 7 x64) via a Gigbait network in order to transfer file, however lately the transfer of files has been really slow (11Mb/s) I have already ...
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60 views

Strange SSD Response Time Spike

I have a Samsung 840 EVO 1 TB SSD disk. I am streaming data to this sequentially at a rate of 60 MB/s to four different files (15MB/s each) with the size 168GB (preallocated) each in a circular ...
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204 views

Toshiba Satellite P850 - Freezing and Stuttering

I've about exhausted all my known options at this point. I own a Toshiba Satellite p850 which was new in 2012. The laptop frequently (several times per minutes) locks up or stutters the entire system. ...
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544 views

Computer runs slow in the startup screen and booting of windows, programs fade in and fade out slowly

I think I have the exact same problem that is described here: PC running slow like molasses from BIOS to OS. Everything was working fine, and then suddenly, out of nowhere it took forever to boot my ...
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13 views

Page cache flushing behavior under heavy append load

I'm trying to understand the behavior of the Linux pdflush daemon when: The page cache is initially pretty much empty There is a large amount of free memory The system starts undergoing heavy write ...
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133 views

Copying between a remote share on Win2008R2 and Windows 7 is unbearably SLOW

I manage servers in 3 remote locations. Copying files from my workstation (Windows 7) and the remote servers (Windows 2008R2) is painfully slow. Yes my network card drivers are up to date, yes I can ...
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183 views

Windows 7: Slow as can be - Low Resource usage

My main PC is a Dell from 2009 with Win7 SP1 that was originally a Vista machine. I installed a second HDD with Win7 on it and set Vista as the second drive. Its running with an Intel Core Q6600 ...
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45 views

Network speed significantly reduced on Win Server 2008 DC

I started building a little server at home on a Gigabit network. I am running Windows Server 2008 32bits SP2. Before making the server a Domain Controller, I was able to get file transfers at an ...
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210 views

Delphi XE2 runs very slow in VirtualBox with Windows 8.1 installed

While the whole guest Windows runs normal, Delphi XE2 is really slow, especially with code completion. And CPU utilization is near 50% though the Delphi itself does not get more than 10% during ...
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49 views

Browser downloads are extremely slow

I'm trying to download ProTeXt-3.1.3-060313.exe. When I use my browsers to download it, it downloads about 20KB/s. Than I found torrent file of the same program. I'm downloading it with 1.7MB/s now. ...
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123 views

What is the best order of item fields in for different group with various template zabbix?

In my company, we have about 30 servers which i monitor them by zabbix. Some of them are Windows base OS and some others are Linux (CentOS, Debian, Ubuntu) OS base. Basically i create a Template, ...
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134 views

How to get a even higher Fan RPM than “high” with a third party tool or else

Background My laptop gets very hot after its 6 years. I cleaned everything with pressure air and new heat sink, but it didn't helped much. Then, I realized that the built in fan control isn't anymore ...
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20 views

Improve backup performance by watching files added/modified in given directories?

I use SyncbackSE on Windows to back up files between two hard drives daily. Every time the application starts, it scans every single file in the directories that it watches before copying files that ...
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19 views

Which disk IO operations are typically executed when working with flat preallocated VMDK

I usually pre-allocate whole disk space when creating my VMs and usually as flat single files. Since I'd like to move my VMDK to a different drive than my primary I would like to put it on one that ...
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275 views

Cannot download files on Windows 8.1

I can not download files in Windows 8.1. First, downlaod speed decreases to 10-20KB/s. Than it drops to zero. I think it is about security settings. But I could not detect which setting cause this. ...
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74 views

Hard drive: more RPM or higher capacity, which is faster?

I need a relatively fast hard drive (random access). For the same amount of money, I could buy WE Velociraptor (250GB, 10kRPM) or WD Red (1TB, 5400? RPM). SSDs or 15kRPM drives are too expensive even ...
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131 views

Advice on SSD performance bottleneck needed

I guess I need some advanced advice on SSD, SATA, in/out limits etc. I'm programming a video installation where I continously read and write quite a lot of data: To the first SSD, drive A, I write ...
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133 views

Does EnhanceIO supports TRIM on SSD?

Does EnhanceIO supports TRIM on SSD? Or it has own implementation of similar technology?
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106 views

Windows 7 offline files - Windows does not let me access network share due to “slow connection”

I'm using the "offline files" features in Windows 7 to have important files/folders from our network servers with me when traveling. I noticed the following problem: I am travelling and try to ...
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154 views

Why does the same RAM chip benchmark 2x faster on Intel CPUs?

Compare memorybenchmark.net's benchmarks for the "Kingston KHX2133C11D3/4GX 4GB" chip in the read uncached ddr3 intel vs read uncached ddr amd benchmarks. The Intel speed is listed at 14,881 MB/s , ...
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515 views

Windows server 2012 becomes slow

I have a server with following configurations. This is new IBM X3630 M4 server established before one month. Processor : Quad core Xeon E5-2620v2 single processor RAM : 8 GB NIC : 2x 1GbE HDD : ...
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408 views

xbootmgr failing to run a trace, couldn't find a kernel logger

I am attempting to run a boot trace on a computer that is slow to log in using xbootmgr. It is a Windows 7 Professional computer that is on a domain. Based on the guide on this website: ...
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21 views

Is there a way to run a job exclusively on a chip?

We've got a bunch of large (1TB+) NUMA machines at work and have been getting a lot of noise in benchmarking. We've noticed that run times for our application are very consistent from one run to the ...
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403 views

installed 64-bit W7 on Core 2 duo slow pc

CPU: Intel Core 2 Duo P7350 2.00Ghz RAM: 3GB Hi I recently cleaned and installed Windows 7 on my 3 year old laptop. And it seems most programs are running incredibly slow when starting up a program ...
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32 views

Groovy performance on Linux machine

I have a problem when I start Groovy on one of my Linux machines - it takes about 30 seconds to execute very simple command: groovy -e "" if I run strace on it, here is what I see where it stops ...
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32 views

windows 7 in one wifi-network slow

My roommate's Dell XPS is incredibly slow in our new wifi-network (new router - Netgear R6250 with dualband 2,4 GHz + 5GHz, ac 1600), but another Windows 7 computer goes normal. In another ...
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820 views

Low CPU performance with low usage and clock - Windows 8.1

I recently deleted everything from my PC and reinstalled Windows 8.1 from scratch. When I first booted into Windows everything was extremely slow though the CPU usage was very low (about 1%). After ...
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28 views

Is it possible to save system memory by disabling FishEye System plugins?

I was wondering if it is safe to disable Atlassian FishEye system plugins I believe, that I don't need? It says this under plugin management: These plugins are integral parts of your FishEye ...
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55 views

HP Z-600 Workstation does not use all RAM or cores

I have an HP Z-600 Workstation running on Windows 7 Professional w/ a NVIDIA Quadro 4000 Graphics Card, 48 GB RAM and (2) 6-core processors for a total of 12 cores. When I perform a heavy operation ...
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558 views

Windows 8.1 double cpu usage and very slow

I have several computers of identical spec (1.9Ghz i5 scaled to 1.3, 8gb ram, 256gb ssd) running windows 8.1 (installed directly from an 8.1 cd, not upgraded) but since yesterday one has been very ...
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131 views

OCZ RevoDrive X2 runs at half speed

I have a OCZ RevoDrive X2 128GB in RAID 0 mode (two 55GB partitions) installed on my P55A-UD3 mainobard. I installed a fresh copy of Windows 7 64 bit and provided the OCZ drivers during install. When ...
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44 views

Will Linux select the fastest CPU in a SMP system

In a system with for example two physical CPU's, four cores per CPU. If one physical CPU is slower (lower clockspeed, other model) will the Linux process scheduler be smart enough to migrate a high ...
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173 views

VMware Work station is very slow and it cause Windows to freeze

I am using VMware Work Station V9 to run Ubuntu (The latest version) and it is very very slow. I have given it 20 GB Disk Space / 4 GB RAM / but it still runs very slow. My current machine has 16 GB ...
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33 views

Poor wireless performance after WiFi printer intstall & uninstall

A few weeks back I installed a Canon WiFi printer, which caused all manner of issues with my laptop's COM ports (see - Cannot Delete Unwanted COM ports - Windows 7). Unfortunately by the time I ...
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43 views

Why does secondary hard drive IO slow down the entire system?

I have a two-drive setup: an SSD drive for Windows and apps (C:) and D: drive for code and databases. I noticed that while running an IO-intensive operation on the D drive (SSIS), the entire system ...
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513 views

One particular instance of svchost.exe taking up awful lot of memory. Why?

I have been observing that the process "svchost.exe" in my list of running processes keeps taking an awful lot of memory; close to 550MB at times! There are multiple instances of svchost.exe running ...
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39 views

Why does my MBP perform poorly compared to an identical model with less RAM?

I recently discovered Geekbench and ran a set of tests to benchmark my laptop (Early 2011 Macbook Pro / 16 GB RAM of 1333 DD3 RAM / 2.3 GHZ quad core). Here are the results of the tests (Early 2011 ...
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167 views

Speeding up VM performance

I have a Mid-2012 MacBook Pro, that has an Intel Core i7-3651QM @ 2.30GHz, with 16GB 1600Mhz DDR3 memory and a SSD running VMWare Fusion for doing development work with. The VM runs almost as ...
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78 views

Arranging PCI-e cards to maximize performance in machine

I just put a new machine together using an ASUS Republic of Gamers Rampage 4 Extreme motherboard. The machine has 2 nVidia GTX 660s, an Adaptec SAS/SATA 6G controller and a Creative Sound Blaster Z ...
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508 views

Suddenly Hard disk performance deteriorated

Everything was fine till yesterday. From today morning I've been observing that videos (on my harddisk using kmplayer) aren't playing smoothly. I suspected that it might be the player problem, so ...
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21 views

Optimal config for VM host

I'm facing a big issue when I start my windows virtual machine. I noticed that there are a heavy disk usage, and in consequence the host desktop os is freezing and I'm not able to get back "commands". ...
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39 views

I moved houses (40 miles), kept same internet service, but much, much slower service

I recently moved about 40 miles to a new house. I kept the same service provider, same plan, and same modem/router. In my old house, the speed of the internet was a non-issue - click a page and you ...
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45 views

hundred-tab friendly Mozilla w/ no continuous javascript

I often have hundreds of tabs open in many windows in Mozilla, and, after a while, it starts consuming significant amount of CPU for these dormant pages, and each new window and page takes a very long ...
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92 views

Steam games lagging on Debian 7

I installed Steam on to my ThinkPad laptop which is running Debian 7. It has a Intel Core 2 Duo P8600 @ 2.40Ghz and 4GB RAM, along with an Intel Mobile 4 Series graphics card. It's my understanding ...
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452 views

Installed Windows 8.1, Explorer now taking > 50% CPU

I installed Windows 8.1 (x64 Enterprise) on a 5 1/2-yr old Dell Inspiron 1720 laptop. I'm seeing sporadic extended periods (a couple minutes up to 10-15 minutes) where Windows Explorer is consuming ...
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69 views

How to increase IO for operation “SELECT”?

I use windows server 2008r2 with role Hyper-V. The guest system is Ubuntu 12.04 LTC (64 bit). It is situated on the dynamic virtual hard disk /dev/sda. There is postgresql-9.1 (amd64) on the Ubuntu ...