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

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11
votes
6answers
19k 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
2answers
23 views

Any realistic advantage of 802.11ac over 802.11n for a regular home connection?

I am using a 802.11ac Asus - 802.11ac Dual-Band Gigabit Wireless router. Don't have any complains yet but does it really matter to go from a $90 802.11n router to $200 802.11ac router? In theory, max ...
1
vote
1answer
2k 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
30 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 ...
1
vote
3answers
70 views

Available physical memory, XP

I installed a Windows XP x86 on my PC. But when I open the system information window in the System Summary tab, in the right-hand pane and at bottom the following are written: Total Physical memory ...
2
votes
2answers
924 views

How to disable the online Authenticode check everytime you open an EXE?

Every time you open an EXE file that you've downloaded, Windows 7 checks online if the EXE is signed. Is there a way to disable this? It takes around five seconds to test if it's okay, and then it ...
-1
votes
0answers
15 views

Linux healthy number of major page faults

I have a Solr process which has mapped 100 GB into virtual memory. When I run a load test on the query side, I read from /proc/<pid>/stat that the process has between 200 and 500 page faults per ...
3
votes
3answers
2k views

Why does my general frame rate slow down to 40fps randomly?

This has been bugging me for a while. Every once in a while, I find my computer to be sort of laggy and I thought it was because it was busy or something. However, I recently noticed that it wasn't ...
1
vote
0answers
2k views

Windows 7 laptop suddenly very slow; cannot determine cause

I am working on a friend's laptop that became suddenly slow - to the point of not being usable. Boot time is fine, but Windows 7 takes forever to load and run. It is an HP Pavilion dv6. Here is the ...
4
votes
2answers
964 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 ...
8
votes
4answers
2k views

In Windows 7, is there a way to know how much memory a service is using?

In windows 7, is there a way (by using common interface or a custom utility) to know how much memory a specific windows service is using ? It seems most services are hosted by svchost.exe processes ...
1
vote
1answer
26 views

Why does recording a game with Fraps decrease performance?

I've run into some performance problems whilst recording some gameplay videos for Youtube. As I understand, Fraps saves the current frame pixel for pixel in a video file (in a way similar to a RAW ...
12
votes
7answers
26k views

Bitlocker Performance Impact on SSD

I've put a brand new SSD into my work computer and my IT department wants me to use BitLocker. I read one of the other threads on BitLocker performance on standard harddrives, but I was wondering - ...
-1
votes
1answer
24 views

Investigating linux server slow down

We have a code build server, fedora 13, which was working at medium speed for 4 users. Speed means building a code branch took 1.5 hrs max duration. It was having one quad core, 8gb ram, 200gb hdd. ...
-1
votes
1answer
24 views

Will overclocking my chipset increase the performance of integrated graphics?

My AMD Radeon HD 5830 recently broke (overheated because the fan stopped working), and I am currently attempting to run games on integrated graphics, on my chipset. Many games are responding slowly, ...
4
votes
3answers
6k views

Windows 7 System process reading/writing like crazy

I have a problem that my windows 7 computer sometimes starts accessing the disk like crazy for maybe 10 minutes at a time. The process in question is the "system" process. I have disabled superfetch ...
0
votes
1answer
2k views

Windows 8.1 file explorer is Super slow

I have a newish ( a couple of months old) laptop. i7 4700mq gtx765 8gb ram I'm using an ssd boot dirve and a HDD for storage. The computer has absolutely no problems running programs but it is very ...
6
votes
1answer
3k views

RamMap “Empty standby list” drastically speeds up PC. Is there a better way to do this?

Many people are educated on how Windows Memory manager caching work by reading Microsoft white papers, etc. However, there are relatively few documents that describe real-world performance issues ...
1
vote
1answer
132 views

Slow directory removal (rm -rf) on Max OS X

Can anyone help me diagnose why removing a directory would be so slow on my Mac? $ du -hs mydir/ 606M mydir/ $ find mydir/ -type f -print | wc -l 12720 $ date Tue Sep 10 10:59:27 PDT 2013 $ rm ...
3
votes
1answer
2k views

High Disk I/O and CPU usage of System Process in “System Volume Information”

I've a problem with high disk IO and cpu usage from the system process. With the performance monitor I can see that it writes and reads about 100MB/s froM "System Volume Information". I tried to get ...
0
votes
2answers
51 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 ...
0
votes
1answer
22 views

Iperf network benchmark measures under-utilized?

I am working on two embeddded high performance network routers and I have connected them point-to-point via a 10Gbit optical fibre cable. I ran iperf benchmarks on them and when I connect through an ...
2
votes
0answers
29 views

Writing to subfolder is faster than writing to its parent

I use dd to measure write perfomance and observed something strange: writing to /data/emzed2 is faster than writing to /data. This is the way I measured the performance: $ dd if=/dev/zero ...
-1
votes
5answers
2k views

My Laptop is consuming all the RAM despite no programs open

My HP Pavilion G6 1160se Laptop with Windows 7 Home Premium x64 has a 4GB RAM and i5 Processor. The laptop is taking up all the RAM with no programs open. The Task Manager shows 100+ processes all ...
0
votes
0answers
22 views

Slow Harddrive is Dragging the System

I have an HP Pro 3000 SFF running Window 8.1 Update 1 & Ubuntu 14.04 LTS. It uses an Intel G45s Chipset, a Hitachi HDS721050CLA362 500 GB harddrive, an Intel Core 2 Duo E8400 processor, and has 4 ...
0
votes
0answers
69 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 ...
4
votes
1answer
656 views

CPU gets stuck at 0.90 GHz and 53% usage cap

Configuration in question: Model - Dell 1558 CPU - Core i7 740 @ 1.73Ghz - 2.93GHz RAM - 6GB DDR3 1333Mhz OS - Windows 8 Pro MSDN Now this problem has started since yesterday. My computer blanked ...
1
vote
1answer
57 views

Why does my cursor speed slow down when my system is under intense network usage?

On some occasions of computer usage, my mouse acts very strangely. Whenever my computer is under intense network usage (i.e. watching an online video, downloading an application, patching a video ...
-2
votes
0answers
31 views

RAM being used…, by what? Who is eating my RAM? [duplicate]

since some days ago, my computer starts as normal but, as the time goes by, the RAM usage keeps adding up, until it reaches 75% of my RAM (+-9 GB, out of 12 GB). And what's interesting is this: ...
2
votes
0answers
14 views

Why do I get better performance on VMWare when I enable all cpus along with adding cpulimit?

I'm curious but at the same time also would like to share my findings of the increased gaming performance in VMWare by enabling all virtual cpus and limiting the VMWare process with cpulimit ...
1
vote
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 ...
0
votes
0answers
22 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 ...
3
votes
1answer
47 views

Is there a way to identify the busy (CPU-consuming) tab in Firefox?

Sometimes there's a nasty, guilty, CPU-hogging tab in Firefox that's maxing one of my CPU cores and making the whole browser sluggish. I'd like to find it and close it. Sometimes I get lucky, but ...
50
votes
2answers
2k views

Why is piping 'dd' through gzip so much faster than a direct copy?

I wanted to backup a path from a computer in my network to another computer in the same network over a 100 Mbit/s line. For this I did dd if=/local/path ...
0
votes
1answer
40 views

Why does wmic tells my memory speed is 1333MHz, but Speccy says 665MHz?

I've checked my computer specs, and I saw I had memory in 1333MHz speed. I've checked it in wmic (see pic) and it's true. B ut i've checked it in Speccy (see pic) and it shows 665MHz. I've checked ...
1
vote
4answers
2k 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, ...
1
vote
2answers
53 views

Does Windows still copy each file directly to disk, unlike Unix?

Unix was originally designed to perform file system operations in memory, and to update the disk blocks only every 30 seconds during sync. This resulted in a much faster user experience than MSDOS ...
-1
votes
0answers
49 views

Troubleshoot System Performance Problems

I am running Windows 8.1 PRO N on my Samsung Chronos Series 7 laptop http://www.samsung.com/us/computer/pcs/NP780Z5E-S01UB-specs It is a development machine, it has Visuals Studio 2013, SQL Server ...
13
votes
7answers
8k views

Does storage capacity affect hard drive performance?

I read somewhere that smaller (in terms of disk space) hard drives are faster than equivalent but bigger hard drives. How true is this? In other words, say I have two hard drives. Both are of the ...
-1
votes
2answers
25 views

Is software like tune up utilities essential?

Is software like tune up utilities necessary? Can't we perform the tasks using some other free ware tools and built in windows tools?
-1
votes
1answer
20 views

Reducing disk usage on Lotus Sametime

My Lotus Sametime (8.5.2) freezes every few seconds, while reading/writing to disk. Process Explorer show heavy disk I/O. I suspect sametime writes logs and the antivirus locks the file while it's ...
2
votes
2answers
3k views

Linux: mount options to improve performance on slow HDDs?

I encounter a performance problem with two HDDs. One is fast but mounted remotely through NFS, the other is local (ext4) but slow. No, exchanging the two drives is not an option, because it would ...
0
votes
1answer
27 views

i7 (first-gen) running memory on 1066Mhz vs 1600Mhz - any performance loss?

I tried to read about this, like what is the actual difference, but I could not find any benchmarks or helpful posts. Most of them are simple placebo effects, like "oh my god the 1600mhz module made ...
0
votes
0answers
33 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 ...
0
votes
0answers
19 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 ...
0
votes
3answers
5k views

What can I do to make my VPN connection faster?

I am using hideman as my VPN, however I found that my internet browsing speed was significantly degraded when I was using VPN. I used speedtest.net without VPN and I got 5Mbps, and when connected to ...
0
votes
1answer
27 views

Recommended RAID5 stripe size?

I have a RAID5 array built from 4 1TB drives. I initially set the stripe size to 1M since I will be storing large files (much larger than 1MB). The NTFS cluster size is 64KB (largest possible). ...
0
votes
1answer
21 views

How can internet speed test applet not just show slow speed, but hang?

I have one internet connection, which works bad. It should be 80/20, but works much slower. Also, when measuring it's speed, speed test applet not just show slow speed, but HANG. How can it be ...
-1
votes
1answer
106 views

Google Chrome working incredibly slow

So recently I have received a new laptop for work. It's pretty decent, i5 with 4GB of ram and hybrid SSD hard drive. Google Chrome was always my default browser and it works painfully slow here, I ...
0
votes
0answers
33 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. ...