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

learn more… | top users | synonyms (3)

0
votes
1answer
20 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
vote
1answer
28 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
votes
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
votes
0answers
21 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
votes
3answers
82 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
vote
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
12 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
128k 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
192 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
votes
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
votes
0answers
15 views

Omit windows from secondary display

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
vote
0answers
42 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
votes
0answers
70 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
27 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
32 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
32 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 ...
0
votes
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
72 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
65 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
65 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
252 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
36 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
93k 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
41 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
43 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
633 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
73 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
27 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
15 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 ...
0
votes
3answers
96 views

Procedure checklist for slow computer problems

For me one of the most hard to pinpoint the causes problem is to determine what is causing slow behavior. In many cases you can't find a process which is consuming more significant memory than the ...
0
votes
0answers
32 views

Does Synology Hybrid RAID (SHR) have faster read/write speeds than a single HDD?

So I have 4 of the same drive (5400 RPM WD Red's) in SHR. Since there is data parity (same chunks of data exist on multiple drives), will the read speed be greater than that of a single drive? Could ...
0
votes
1answer
93 views

Disabling pagefile in windows 10

I read a lot about disabling pagefile pretty much everywhere and some places tell you that doing so is a great thing for performance (given a lot of ram) and other places tell you that even with a ...
0
votes
1answer
52 views

Is it possible to create virtual disk out of CPU cache?

I heard a story from 1 bro, that some other bro installed small OS on CPU cache and it worked very fast. Intel® Xeon® Processor E7-8870 v3 has model with 45MB cache. Are there some technologies that ...
0
votes
3answers
56 views

Is my laptop fast enough to run WIndows 10? [closed]

I'm thinking about updating from Windows 8.1 to Windows 10. Before I do that, I would like to know if my laptop will run as fast as it does with Windows 8? Here my specs: Model: Lenovo S210 Touch ...
3
votes
1answer
7k views

BootCKCL.etl file size & Session “Circular Kernel Context Logger” stopped due to the following error: 0xC0000188

I have a few regular / re-occurring errors in my event viewer which seem to be linked to logging upon boot and shutdown. I am running Windows 8 x64 professional. Event ID 4: The maximum file ...
0
votes
0answers
29 views

Slow network speed until restart of PC

I have a strange problem that I cannot figure out. After a day or or two my network slows right down from 64Mbps to around 3Mbps, restarting the router only gives it a boost up to around 5Mbps but ...
0
votes
1answer
45 views

Can I run xbootmgr to speed up boot times on an SSD?

It is possible to tune up the Windows boot time by using the xbootmgr tool from the Windows Performance Toolkit, as described in this related question of myself: Should I logon to Windows when using ...
-1
votes
0answers
51 views

Synology DS115J NAS Slow Speed from NAS TO PC

Has stated in the title I have a DS115J Synology NAS. Copying files from PC to NAS I get 11MB/s (wich is pretty much the max on network of 100mbps if I'm correct). But when I copy files from the NAS ...
0
votes
1answer
13 views

Does anyone have any benchmaking data for Rstudio Server?

I need to set up a Linux server that will serve over 200 concurrent users, accessing an R studio server. I will be creating J Meter scenarios to test this, but before I went through all that I would ...
0
votes
2answers
27 views

How to speed up process start time?

I noticed processes are taking a very long time to start (100ms). My CPUs are mostly idle but has load on it. top - 16:59:29 up 60 days, 23:49, 1 user, load average: 6.38, 6.28, 5.95 Tasks: 544 ...