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

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0
votes
2answers
46 views

Does the amount of files on desktop affect computer performance?

I store thousands of files directly on the desktop folder. When I tell that to some people, they begin to yell "you're making the computer slower!" without any rigorous arguments whatsoever, just ...
14
votes
7answers
16k views

Are we supposed to manually delete the contents of /tmp?

I was under the impression that “old” files in /tmp will be regularly deleted. However, it seems to me that /tmp will just grow as long as it wants to, and nothing will be deleted. Some people say ...
1
vote
1answer
44 views

Why is my mouse lagging over Thunderbird email or folder pane?

In Thunderbird 31.5.0 I noticed an annoying mouse delay/stutter when mousing over the email list or folder pane. At the same time I see a CPU spike of about 25% (older WinXP dual core system). Why ...
-2
votes
0answers
14 views

NetDMA (and Direct Cache Access?) have been removed from Windows 8 / Server 2012. Why?

The MSDN page on Direct Cache Access (DCA), which is part of NetDMA, states The NetDMA interface is not supported in Windows 8 and later. So I guess both NetDMA and DCA are gone. As both seemed ...
1
vote
3answers
23k views

Windows 7 svchost.exe (LocalSystemNetworkRestricted) reading/writing like crazy

I'm trying to understand why my Windows 7 machine is constantly reading/writing to the HDD, making everything go slow. As you can see in the screenshot, resmon reports that there is a lot of disk ...
-4
votes
0answers
40 views

Why are high-end laptops and desktops so close in benchmark performance nowadays? [on hold]

When comparing Geekbench results for the top-of-the-line MacBook Pro with e.g. an Intel i7-4790 system, then the scores are not that different, even though the desktop sports 3.6 GHz whereas the ...
-1
votes
0answers
44 views

Why is my Windows 8.1 (new laptop) extremely slow and sluggish when compared with Linux

I recently got this laptop, so it is still new and so is the installation. The laptop is TOSHIBA SATELLITE C55D-A-149. I realise that this is a budget laptop and the processor is fairly weak. I dont ...
19
votes
4answers
12k views

Does changing Windows XP theme to classic enhance performance?

A lot of my colleagues and friends who are still using Windows XP use the Windows Classic theme (i.e. the Win98-like theme, unlike the XP theme). Some of them just like it, but some others say that ...
-1
votes
0answers
35 views

Good non-commercial hardware diagnostic CD? [on hold]

I fix and optimize computers for myself and my friends, so I am looking for a good Live CD that I can just pop into a computer and it will run tests of all the major hardware components in order to ...
-1
votes
1answer
47 views

Compare the performance and reliability of two hard disk drives

I currently have two basic hard disk drives from brands I don’t even recall. I just bought a new SSD to be the replacement of one of the two current ones. The two hard disk drives I currently ...
0
votes
1answer
26 views

How to prevent GPO from mapping network drives on my PC?

I'm using a Windows 8.1 laptop I got from my workplace, and it's is a member of the workplace domain. The IT department at my workplace thought it was a good idea to enforce mapped network drives for ...
0
votes
1answer
16 views

Installing EFI boot on 128GB memory card

I am using laptop having 5200rpm hdd, and I stuck with its speed, so I was thinking to purchase a ssd which can improve performance but hdd are so expensive, and I can't keep both hdd in my laptop. So ...
-1
votes
1answer
136 views

Why is my Lenovo G500 laptop computer running slowly?

The one I’m currently using is a Lenovo G500, Intel Core i7, 2.10 GHz, 8 GB RAM, 1 TB HDD, Windows 8.1 64-bit, AMD Radeon HD 8570M, Intel HD 4000. The problem: it is slow. It lags even if Google ...
3
votes
0answers
54 views

Stutter while gaming every 3-4 seconds in Windows using MacBook Pro 2012 (MacBook 9.1) using Windows 7

I'm using Windows with Bootcamp on my Mid-2012 MacBook Pro (Here is the config). Recently when I play a game, I get frequent (and somewhat constant) stutter every 2-3 seconds, no matter if it's a 2D ...
0
votes
1answer
2k views

ext4 vs btrfs performance on SSD array

I am observing something that I cannot explain. I am trying to come up with a good filesystem configuration using HP P420i controller and SSDs. Out of curiosity I have tried BTRFS (still unstable so I ...
0
votes
4answers
3k views

Low disk performance with Windows 8.1

I have a Dell XPS 15 (L502X) that have a Core i5-2450M, 6GB RAM and a 1TB WD 5400RPM HDD. This notebook Achilles' heel is the disk. It's slow and I understand that if I do stress it to much, it lends ...
9
votes
3answers
14k views

Does a USB hub affect performance?

I have two devices I want maximum throughput and latency with. (Midi drums and midi keyboard for example) Would connecting both to the same USB port via a hub effectively limit the maximum data ...
1
vote
1answer
16 views

curl capturing http status and timing the request

I have a loop in wich I check urls from file one-by-one and want to get the status header and the execution time of every request as result. I have two curl commands: This one outputs the header ...
-1
votes
1answer
19 views

Download speed and software/CPU relations?

I notice that downloads on my old, slow, XP machine, using the home Wi-Fi, are slower than downloads from the same connection on my Tegra K1 ARM tablet, which is definitely faster. Using any browser ...
-1
votes
0answers
33 views

What could cause a computer to run slow without any evident changes? [closed]

Over the past couple months, I have been working on an application which converts PS files to PNG using Ghostscript.net, and then merges these into another PDF document. There are 100+ PS files which ...
2
votes
1answer
2k views

Flash stream makes my internet slow and cpu rush

When I try to watch a live Flash stream, my CPU usage goes up to 75% and my Internet speed goes down. If I run a test before the video-stream, my speed is ~40/10Mbps and during the stream it drops to ...
40
votes
10answers
34k views

Top causes of slow ssh logins

I'd love for one of you smart and helpful folks to post a list of common causes of delays during an ssh login. Specifically, there are 2 spots where I see a range from instantaneous to multi-second ...
0
votes
0answers
7 views

fio: can't generate filenames based on jobnames

I am trying to benchmark performance using fio. Unfortunately I have some issues with fio (2.2.8 from git) and the interpretation of the manual. The manual reads (line 142, HOWTO): If no filename ...
3
votes
1answer
4k 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 ...
13
votes
3answers
1k views

Why would an incorrect password attempt take a lot longer to process than a correct one?

The most prominent place I've noticed this is when SSH-ing at work, but I feel like I've observed this behaviour elsewhere too. When I try to log into Linux servers from my Windows desktop at work, ...
17
votes
4answers
974 views

Why is my Windows unbearably slow? [duplicate]

I use Windows since ever, sometimes Linux, sometimes OSX. Since Windows ME/2000 I have been having this major problem: I install a fresh copy of Windows, it boots fast as hell, everything goes ...
1
vote
4answers
3k 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, ...
5
votes
4answers
10k views

Scrolling browser through RDP is jerky. Other applications behave fine. Why?

I have Windows XP SP3, and Windows 7 machines acting as a server in my LAN. (it's only 100mbit LAN there is no WAN). The client is Linux with the latest FreeRDP 1.x just compiled. Here is the ...
0
votes
3answers
52 views

Why is my computer so slow s:

I've had this problem for so long and it's annoying me. Everyone says my computer is bad but I dont get it. on Runescape I get 4 FPS. On LoL my computer just crashes and Skyrim is insanely laggy and ...
14
votes
3answers
4k views

How can I verify that my SSD is performing as it should?

I've got a brand new 256GB SSD (Crucial CT256M225) which should have stellar performance. However, on my (also brand new) Dell Studio 1557 with Windows 7 Professional 64 bit, it's only giving a ...
2
votes
0answers
33 views

Wrong total ram ( 8 GB installed, 4 appears and used in total )

I have this motherboard: GA-X38-DQ6 which can hold up to 8 GB of Ram. When I got this computer it had 4 memory sticks, 1 GB each, and everything was fine. Now, I have two sticks, 4 GB memory each: ...
5
votes
3answers
2k views

Improving/Resolving keyboard input lag with Visual Studio 2013

I'm having a slight delay (50-200 ms estimated) with keyboard input (code editing) from within Visual Studio 2013. The problem does not occur with Visual Studio 2010. When typing, there is a slight ...
5
votes
3answers
1k views

Copying to a network shared folder extremely slow

Have three computers both with windows 7 connected to each other with a TRENDnet gigabit switch, have a folder on computer A that is set as shared folder under the advanced sharing settings for the ...
2
votes
5answers
2k views

ThinkPad Windows 7 laptop is often slow but only when plugged into AC power

It's a ThinkPad W510, with Windows 7. I've been struggling with this since I got the laptop. Very often, say for 20-30 minutes at a time several times a day, the laptop gets painfully slow. I'm ...
1
vote
0answers
36 views

QCA9565 / AR9565 Slow at some distance

I'm having trouble with an Dell Inspiron 14 5447 Wifi using Ubuntu 14.04. It's an QCA9565 / AR9565 Wireless Network Adapter. When I'm at 4 meters distance of my wireless router, it works fine, as ...
0
votes
0answers
58 views

Bad performance after re-install windows

Lately my laptop was having trouble playing certain games because the disk would go to 100%, after trying multiple things to fix it without succes I decided to start from scratch and reinstall ...
6
votes
2answers
252 views

After plugging in a USB device, Win7 severely slows. What causes this and how could it be fixed?

This is the second PC undergoing this condition, both running Win7. On PC1 a Logitech device was connected through USB before installing it's branded driver (allowing windows to auto-install it), and ...
-1
votes
1answer
74 views

Does a faster processor noticeably increase speed in web page serve and load from localhost? [duplicate]

I am a web developer getting a new computer. Right now I am deciding between two laptops - one that has 32gb ram but a slower processor, and one with 16gb ram (can't be upgraded further) but a faster ...
0
votes
3answers
3k views

Slow internal disc to disc file transfer speed

I ran the HDTune drive monitor while I was transfering about 80 GB of various sized files, most of which was running about 40 MB/s, but you can see where it spiked down to under 1 MB/s. ...
0
votes
0answers
76 views

Facebook load times are very slow, but other pages are fast, and >12Mbit/s up & down

I have measured 12 Mbit/s up and downstream. I have a wireless Network Adapter called Asus PCE-N53 (300Mbps 11n Dual band Wireless LAN PCI-E Card) and is connected to my local wireless router. I have ...
0
votes
0answers
53 views

Fast Wi-Fi speed on smartphone but slow on notebook

I have a Lenovo G710 notebook and a Samsung Galaxy Note 3 smartphone connecting to a Linksys E1200 AP. The Wi-Fi speed on my G710 is extremely slow compared to the Note 3, and half of a month on, ...
0
votes
0answers
19 views

Does putting virtual machines in separate partition affect performance?

I have a 500 GB HDD in a laptop. I partitioned it into two drives so I could leave the C drive for windows and the other drive E for virtual machines. I run CrystalDisk benchmark on the C drive and ...
1
vote
1answer
23 views

How can I audit performance while screen is asleep to troubleshoot audio issues?

I am having issues with my audio being choppy when my laptop's screen goes to sleep. Specifically, I want a log of the following: Applications' resource usage Any resource spikes Any ...
0
votes
2answers
2k views

Windows 8: Disk Usage at 100%? Nothing Responds

Lately my Windows disk usage has been "sky-rocketing" to 100% and then everything freezes up, nothing is responding. I can’t even open the menu from sliding my mouse to the top right corner and I ...
45
votes
12answers
52k views

How can I produce high CPU load on Windows?

For testing purposes I need to generate high CPU load on a Windows Server 2003. I cannot install any software but have to make do with what Windows provides. What would be the best way to achieve ...
-1
votes
0answers
31 views

Windows 7 UAC and system performance drop

Can anyone confirm the performance drop when using computer? I'm getting tired of constantly battling all kinds of malware and "issues" Windows can have when using as normal, so I switched on UAC and ...
3
votes
3answers
2k views

Slow vmware vm with fast brand new laptop

I've just bought a fast core i7 laptop with 16GB of RAM running Windows 8.1. When I run a VMware VM on this computer, the VM is extremely slow. And if I look at the host HD activity during this time, ...
0
votes
0answers
50 views

Set Windows 7 to “Performance optimized” under Visual Effects with Batch script

I have this .bat script to start a specific game: @echo off if not "%~1"=="p" start /min cmd.exe /c %0 p&exit start "" "GTAVLauncher.exe" timeout /t 60 /nobreak >nul taskkill /f /im ...
1
vote
2answers
26 views

Are there any security or performance implications of changing the user-agent in a browser?

I am working on a production issue which only occurs in IE10 and not in chrome/Firefox. If I change the IE10's user-agent (F12) to Mozilla Firefox it works. I need to debug the app. layer to find ...
161
votes
9answers
18k views

Why does emptying disk space speed up computers?

I have been looking to a bunch of videos and I now understand a bit better how computers work. I understand a bit better as well what is the RAM, the volatile and non-volatile memories or the process ...