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

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1answer
31 views

Should you install GPU drivers on HDD or SSD?

I have always been wondering the following questions: Where should the GPU drivers be installed? HDD or SSD? How often are they read? Does it need to be fast? Is there any performance gain when they ...
1
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0answers
19 views

GPU VRAM bandwidth importance for neural net training

my Question in short is: Is the VRAM bandwidth of a GPU really the bottleneck regarding Deep Neural Networks? Longer Version: A guy named Tim Dettmers wrote in his blog, that all the relevant ...
0
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1answer
3k views

Is “lag” just a part of Windows remote desktop? (“Can I work remote with nearly no lag?”)

I use Windows Remote Desktop to connect to my physical workstation at the office -- I remote connect from home where I have (conservatively) 16 Mbps Down and 6 Mbps Up. It's not that I experience ...
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0answers
5 views

Why the discrepancy between devolo cockpit and iperf

I have set up a Devolo dlan 1200+ network in my home. According to the devolo Cockpit software my bandwidth is displayed at > 200 Mbit/sec. However when I do an iperf test between two computers on the ...
0
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2answers
24 views

Macbook type A1181 sluggish after repair. What could have gone wrong?

I had to replace the CPU fan and the inverter cable of this macbook. I followed the guides at ifixit: Repair guides for MacBook Core 2 Duo After reassembly the screen and the fan worked properly but ...
4
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1answer
125 views

Windows 10 boot suddenly takes 10-20 minutes

I installed my brand new Lenovo 900s and after installing my standard software and development systems and suddenly the system wouldnt boot and is stuck in the boot screen. I first thought it was ...
3
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0answers
29 views

Transferring large file to/from USB drive causes system to hang until transfer is done

I have a box running Ubuntu 16.04 server. It has an internal SATA hard drive with the OS on it, and an attached USB 3 hard drive which I use for storage of large/long term files. A lot of times, this ...
0
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0answers
12 views

apache php7 is 100 times slower then static content

I am having slow TTFB (200-700ms) on my local web site (Vbox VM, debian8, apache 2.4, php7), so I made some bench marking, and narrowed it down to an Apache configuration. I have made 2 identical ...
6
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2answers
6k views

High CPU usage by dwm.exe when nothing is happening

Setup: Windows 7 Ultimate, running in a VMware box inside Windows 8, VMware Tools installed; VMware Workstation is the only application launched in win8). Aero is on. Starting a few months ago, on ...
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4answers
9k views

When should I activate the “launch folder windows in a separate process” option?

In folder options -> view, there's an option that's off by default called "Launch folder windows in a separate process". I'm on windows-7, but I know this capability has existed since at least windows ...
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0answers
10 views

Google Chrome slightly jitters with one minute period

Some months ago I installed Windows 10 on my PC and now when watching Youtube videos in Chrome, I experience regular jitter - sound is fine, but video gets jittery for a few seconds with regularity ...
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1answer
24 views

CPU performance growth stagnates

I looked at this diagram and I am wondering me that the increasing of the CPU performance seems to stop although the transistor count is still increasing. I mean what are the profts of the increasing ...
1
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1answer
31 views

Deliberately slow down file access speed

I am trying to deliberately slow down access to files on my Windows machine to test load times on an application I am making. I've tried virtual machines and giving it limited CPU/RAM resources, but ...
4
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5answers
33k views

Defrag C: /b really works to Windows boot optimization?

The command Defrag %SystemDrive% /b really works to optimize Windows boot time? (The defrag /b option is not documented by Microsoft). I am trying to use it in an attempt to optimize the files on the ...
0
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0answers
22 views

Matlab 2015b laggy with windows 10 update process running (GWX.exe)

For a couple of days Matlab2015b has been much slower than before. I tested 2013b and 2016a and both were significantly faster (my S-Function runs ~10 times faster). Since it was not like this before ...
0
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3answers
95 views

my windows 10 pc got really slow although CPU and memory usage is fine. what else can I do?

since two weeks my windows 10 pc got really slow, and I have no idea why. I can still do everything, but everything takes much longer to a degree that I'm struggling to get my school work done. ...
1
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1answer
4k views

Unusual and sudden slow login and lock screen in Windows 7

I have Windows 7 Professional on my laptop (since 2011, not updated). It was working fine, but suddenly the login screen has an unusually long please wait time, and lock screen takes about a minute or ...
0
votes
1answer
18 views

Nvidia GT 540M runs smoothly then performances drop

I'm using a 5 years old ASUS K53SV with Win 7 using a Nvidia GT540M GPU. Recently, especially when playing games, everything runs smoothly, but after a while, usually a few minutes, there's a half ...
66
votes
5answers
129k views

Linux: find out what process is using all the RAM?

Before actually asking, just to be clear: yes, I know about disk cache, and no, it is not my case :) Sorry, for this preamble :) I'm using CentOS 5. Every application in the system is swapping ...
5
votes
1answer
196 views

100% SSD Activity, 0 R/W Speed: System Hang Issue

So I've just been experiencing a weird issue with my system where it hangs and it is very unresponsive at random intervals of time (in fact, the first clue that I had an issue was when boot to desktop ...
2
votes
3answers
3k views

Windows 8.1 takes 10 seconds to open file explorer from taskbar (not from start menu)

I open "This PC", and right click to to "Pin this program to taskbar". Now there's a shortcut to explorer in my taskbar, but when i click it, it takes around 10 seconds before the explorer window is ...
0
votes
0answers
19 views

throughput over LAN low with small files

A single threaded program reads files 3 KB each over 1 Gbps link LAN (using e.g. \\other_machine_ip\share\file_name.txt) from one windows machine to another. Calculating the speed using time, number ...
5
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2answers
13k views

Why does Windows 7 64-bit require more memory than 32-bit?

Why does Windows 7 64-bit require more memory than 32-bit, according to the upgrade advisor?
0
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0answers
15 views

Omit windows from secondary display [on hold]

I want to decline this windows while I'm using hot key alt + tab. Is it possible with embedded functions? Or rather to use/write your own script
1
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0answers
53 views

SSD is very slow on PC

Yesterday I installed Samsung 850 EVO ssd in the place where HDD was installed on my HP Pavilion Dv6t 6c19tx. Then I installed fresh Windows 10 pro on it and everything went smooth. I didn't notice ...
3
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0answers
75 views

SSD is slower on PC

Yesterday I bought Samsung 850 Evo 250GB. It's now my boot drive and has Windows 10 pro installed on it. I benchmarked the SSD with Crystal Disk benchmark. All the scores reported by crystal disk ...
18
votes
5answers
24k views

Super slow opening my downloads folder

I have an exe file in my download folder that I half downloaded through utorrent (it's not piracy, a legit file from people who use bittorrent to distribute large files). I think I tried to open it ...
1
vote
1answer
31 views

Understanding cpu usage

I have this simple code int main() { while (1){} return 0; } When I run this code on Windows, why is my cpu usage only 25%? Yet, when I run it on Linux, my cpu usage is 100% I have 4 cores ...
0
votes
0answers
41 views

Is there any effect on performance when using the Cinnamon desktop environment in Ubuntu instead of Unity?

Cinnamon is a famous DE stick with Linux Mint. People say Linux Mint's performance is better than Ubuntu on under-powered system. I am using laptop Dell Vostro 2420 with Ubuntu 14.04 LTS installed, ...
6
votes
2answers
3k views

My SSD has extremely slow write speed. Any ideas what could be the issue?

Last year I put together a new PC with a PNY XLR8 SSD (http://www.pny.com/XLR8_SSD?sku=SSD9SC240GMDA-RB) Things have been great up until recently when I started noticing that network copies of large ...
3
votes
2answers
4k views

Very slow volume expand on Synology ds2413+

I've posted this elsewhere on the internet aswell, and will obviously reply in both places if a proper solution is found. I am attempting to expand SHR volumne (2x4TB, 1x2TB) with additional 4TB ...
0
votes
1answer
34 views

Harddrive suddenly got really slow

My computer has multiple hard drives. The one I am asking about has my Steam games and backups of websites I built for work. Last night I noticed my Steam games got really slow and was frequently ...
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0answers
18 views

Computer sluggish while running speed test

Recently my computer has become very sluggish when running internet speed tests (the PC itself, not the internet speed). I've also noticed this when downloading stuff sometimes, I thought it may be ...
-1
votes
1answer
77 views

Why Powershell is so slow?

I tried to make a simple thing with PowerShell, find files which take most space on the drive. I used ls + sort and....it took forever for me. Sometimes I use far manager and compared with ...
2
votes
1answer
70 views

My Windows 10 Computer Seems to Wake up And Run Slower

I've got a beefy Windows 10 desktop computer (specs below) that has a NVidia 970 card, two 4K monitors and bunch of bluetooth devices (k/b, mice, etc.). I've noticed that once it has gone to sleep ...
1
vote
1answer
67 views

My pc is very slow

my pc performance became very slow lately just doing basic tasks like browsing on the internet, watching 720p youtube videos, working with MS word or excel, for example it hangs for few secs when I'm ...
0
votes
2answers
255 views

Distorted audio, lagging mouse, slow speed, no internet

So when I turn on my computer now the windows booting sound is all distorted almost like it's stretched or crackling, when I log in the mouse lags, and everything seems to load a bit longer. It can ...
1
vote
1answer
39 views

High-specced machine can't fluently play 4K UHD video

I have a machine that should in principle be able to play 4K/UHD uncompressed video. Here are some specs (tell me if you need more): Operating System Windows 7 Professional 64-bit SP1 CPU ...
0
votes
3answers
4k views

CPU usage 99% constantly

My computer is running windows 8, and suddenly started running slowly. When I open the task manager, it tells me that the CPU is using 99% - sometimes the disk usages jumps up as well. The strange ...
26
votes
3answers
94k views

Windows 10 high memory usage (unknown reason)

Well few days ago I updated my pc to windows 10. However, after some use my PC started to slow down until its was impossible to use, it was due to high memory usage. After restart, everything came ...
0
votes
1answer
55 views

Can Windows 7 make good (high performance) use of RAID 1 between a SSD and a HDD?

Recently my hard drive died, and I lost all my files and I am really sad. Right now I am making a software 1 raid between my 2250MBps/1850MBps Pcie 3 8x SSD, and my 1TB 170MBps/170MBps hard drive. ...
1
vote
1answer
46 views

Why do my videos on my PC play in 'slow motion'

I have an odd occurrence with my PC. When I try to play video files, whether it be online through YouTube or Facebook, or on my hard drive in Windows Media Player, they play in slow motion. However, ...
0
votes
1answer
44 views

GPU Performance levels - unexpected drops

In Speccy I see 4 performance levels of my GPU. Which component is responsible for choosing performance level? Because when I play a game (Heroes of the Storm, Rocket League, NFS 2015) this ...
1
vote
4answers
4k views

HP Probook 4530s great specs, but lagging. Hard Drive?

I have this laptop, which has a i3 processor, 4gb memory, 7200rpm hard drive. So there is nothing wrong with the specs. Even when I have no applications open, simply closing and opening windows, ...
3
votes
1answer
636 views

Two 2TB drives, why is dd is almost 8 times faster erasing one?

I have two 2TB drives: /dev/sde WCD WD20EZRX-00D8PB0 Firmware revision 80.00A80 (new consumer-grade WD Green series) /dev/sdf WCD WD2002FYPS-01U1B1 Firmware revision 04.05G05 (old pro-grade server ...
2
votes
1answer
79 views

Slow download speed on Windows 10

When I built my computer I only had a Windows 7 disk lying around, so I installed Windows 7; Internet worked completely fine and didn't have any issues with the download speed. I then downloaded ...
0
votes
1answer
31 views

Slow VNC. Where's the bottleneck?

I have two computers in a LAN, one for leisure and one for hobby. The latter I connect to via Remmina VNC. This is what the desktop of the hobby computer looks like. The speed of my mouse cursor ...
0
votes
1answer
28 views

Music performance setup - with HDD + SSD + more SSDs?

Question: I'm aware that the OS runs much faster on an SSD than on a HDD. I'm still confused though. I want to do live DJing with my computer. Essentially l need to simultaneously do 3 things very ...
0
votes
1answer
16 views

Performance impact of SATA II over SATA III for ZFS?

I have a bunch of WD RE4 disks I got from a place that I worked. The drives are 3Gbps SATA II interface. I was going to use them in a server I am building for myself to act as a NAS / SAN for my ...
1
vote
1answer
39 views

How to detect thrashing on an SSD-equipped system?

With spinning hard disks it was relatively common to hear disk thrashing when some process, Windows or otherwise, was making a bad fist of things. Quite often this was an indicator that a process was ...