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

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8
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3answers
38k views

How mSSD Hard Drive Acceleration Cache improves performance?

I am looking forward to buy a laptop and while configuring online from HP's site for model dv6tqe ...
8
votes
2answers
2k views

Why does Chrome group my tabs in processes and how can I stop it?

I noticed that in Chrome, it groups all the tabs into one renderer process, at least for me. This is a problem because that makes Chrome really slow from having 150k of RAM to sort through. Is there ...
8
votes
5answers
4k views

How can I reduce the size of Windows 7, and its CPU and memory usage?

My Windows 7 setup uses around 16GB while Windows XP only needs around 4GB hard disk space. Seems weird. I use Windows only for gaming so I don't need a lot of stuff they have to offer. What is the ...
8
votes
2answers
189 views

Why has 'cat' this strange time behaviour?

I'm using cat to pipe different files into one big file. The number of different files varies, from two files up to ten, but the total size of all files is always the same (a couple of GB). My ...
8
votes
1answer
2k views

How to measure actual USB3 port speed?

Not all USB3 ports are created equal. I have a friend who develops embedded hardware that interfaces with USB chipsets. He told me that most USB chipsets that are slightly faster than USB2 (480 ...
8
votes
1answer
347 views

What do different patterns mean in Windows 8 file copy dialog

When copying or extracting files, Windows 8 shows the chart with the speed of the operation. I noticed several patterns: Randomness, High speed at the beginning, then low speed during the most part ...
8
votes
2answers
10k views

How to decrease the CPU usage when running Virtual Box?

I am facing an issue with 100% CPU usage under my system when running VirtualBox. Here are some further details: My System Information: CPU 1 name: Intel(R) Pentium(R) Dual CPU T2310 @ ...
8
votes
2answers
202 views

CPU-adaptive compression

Let assume I need to send some data from one computer to another, over a pretty fast network... for example standard 100Mbit connection (~10MB/s). My disk drives are standard HDD, so their speed is ...
8
votes
1answer
6k views

The meaning of thermal throttle counters and package power limit notifications in Linux

Whenever I do some performance testing on my Linux-installed MacBook Pro, I often see the following messages in dmesg: Aug 8 09:29:31 infinity kernel: [79791.789404] CPU1: Package power limit ...
8
votes
0answers
339 views

How do I evaluate an SSD caching solution for home desktop use? [closed]

I've got a 30GB SSD that I would love to start using as a cache for my larger HDDs. I primarily want to improve apparent performance for general desktop use. I do the occasional massive DB migration ...
7
votes
6answers
879 views

Default Windows 7 Install: What to change to make it faster?

I remember there were guides for Windows XP on all of the unnecessary services and things that you could turn off in a default install to make the system a bit more 'snappy'. Is there such a guide ...
7
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5answers
4k views

MacBook Pro for Windows development via virtualization. Performance?

I am a Windows/Web developer by profession and I have been considering a MacBook Pro as a replacement for my current development machine. I am impressed by the build quality, the uni-body construction ...
7
votes
2answers
1k views

Windows Hibernation increases startup/shutdown speed

A few weeks ago, I installed AVG PC TuneUp on my Windows 8 laptop. It recommended that I disable hibernation - this would increase performance. From that point, start-up and shut-down became ...
7
votes
1answer
1k views

HDD performance spikes

I have a Dell Precision T1700 I purchased for about $1500 almost a year ago. I am having some moderate hard drive issues. I think it's not as fast as it should be. Booting seems quite long considering ...
7
votes
3answers
31k views

My Mac is slow but don't know what's slowing it down

My Mac (Macbook Pro) is sometimes slow doing basic tasks, like browsing the web or something like that. If I open Activity Monitor, I have (maybe) one program that is about 10 % CPU, others are below ...
7
votes
3answers
13k views

Increase Outlook 2013 performance?

I feel that Outlook 2013 (compared to Thunderbird) is quite slow at e.g. changing between mail view and calendar view - is there any way to disable e.g. the animation of the transition between mail ...
7
votes
9answers
39k views

Cleaning up temp files in Mac OS X

My 4 months old Mac partition volume is losing space slowly and gradually. I am pretty sure there are a lot of orphaned temporary files laying around in the volume. I know where to find the obsoleted ...
7
votes
2answers
17k views

How to find out what's accessing a particular hard drive on Windows? [duplicate]

Possible Duplicate: How can I view what percentage of my hard drive bandwidth is currently being used? My HDD on a dock just started making noises like it's being accessed but I don't see ...
7
votes
2answers
6k views

How to make high performance cluster out of 2 laptops I have at home [duplicate]

Possible Duplicate: Is it possible to combine processing power of 2 computers? Hi, I have 2 laptops at home. Could someone please suggest some free cluster softwares using which I can make ...
7
votes
13answers
153k views

What are possible causes of keyboard lag on my desktop machine?

I am running Windows 7 and began experiencing keyboard lag in most applications, and it seems to be getting worse. Certain websites are the worst - on some, I can type a sentence, take my hands off ...
7
votes
2answers
2k views

Is it worth reinstalling to enable AHCI on my SSD in order to improve compile performance under Visual Studio?

I am compiling to an SSD connected through SATA using IDE emulation on Windows 7. Unfortunately, I forgot to enable AHCI when I installed, and though there are ways of performing surgery on Windows ...
7
votes
3answers
1k views

Recommendations for hard drive performance boost

I'm going to be building a new system soon and I'm willing to spend a few more dollars to improve my hard drive performance. This will be a general use system so I just want to see HD intensive tasks ...
7
votes
2answers
4k views

Is the L3 cache shared by all cores for a Sandy-Bridge E Xeon CPU?

In a related question (http://superuser.com/questions/412988/impact-of-the-l3-cache-on-performance-worth-a-dual-processor-system) I asked about the benefit of a dual-CPU system in terms of doubling ...
7
votes
2answers
532 views

Strange performance of SSD

My SSD (on Windows XP) is working well, however, I get the following strange results from Crystal Mark 2004R3: 236 MB/s for sequential read 59 MB/s for sequential write 168 MB/s for random read ...
7
votes
6answers
12k views

Looking for a fast CLI Linux distro

I'm looking for a fast Linux distro to put on a USB key. The goal is to be able to boot in as few seconds as possible, with just enough to mount a hard drive and do some basic operations in there ...
7
votes
1answer
378 views

No performance increase on I/O intensive operation after symlink to ramdisk

We have a system that transforms a set of several thousand multi-MB files. After every step in the transform, it writes the intermediate file to disk. The concept is similar to a scratch disk. We ...
7
votes
3answers
7k views

Alternative to Mac OS X Activity Monitor?

I use "Activity Monitor" in a background window to keep an eye on the memory use of each programme and resource use. I am frustrated that the network/CPU/disk activity graphs are tiny and can only ...
7
votes
3answers
8k views

What is a normal file copy speed for SSD?

I am copying a folder (320 items, 1.9GB) on an SSD to a different location on the same SSD and getting a transfer rate of 5MB/s. Is this to be expected? Simultaneous reading and writing to the same ...
7
votes
2answers
365 views

A USB keyboard in a Microserver is causing the machine to become very unresponsive

This video explains it best - Youtube Link I have purchased a number of Microservers and have finally got around to setting the first one up. It doesn't have a PS2 port, but, has loads of USB ports. ...
7
votes
1answer
6k views

How should I use my new SSD drive?

I just built a new PC the other day. Specs... Processor: Intel i7-930 quad core CPU CPU Cooler: COOLER MASTER Hyper 212 Motherboard: AsRock X58 Extreme 3 RAM/Memory: 6gb G-Skill triple channel ...
7
votes
2answers
2k views

Performance issues when using SSD for a developer notebook (WAMP/LAMP stack)?

I'm a web application developer using my notebook as a standalone development environment (WAMP stack). I just switched from a Core2-duo Vista 32 bit notebook with 2Gb RAM and SATA HDD, to an i5-2520M ...
7
votes
2answers
393 views

SSD upgrade underperforming

I upgraded my Windows 7 PC from a Samsung Spinpoint F4EG HD204UI HDD to a SanDisk Pulse SDSSDP-128G-G25 SSD but, unlike seemingly everyone else in the world, I have never noticed a performance ...
7
votes
2answers
2k views

Recent RAM Issue with Windows 7 - Memory Slowly Fills Up

Before I say anything at all, I want you all to know where I've been with this issue: I have run multiple AV scans, including: Malwarebytes, Sophos Virus Removal, ADWCleaner, ESET Smart Security 4 ...
7
votes
1answer
5k views

How do I analyze excessive Windows kernel mode CPU usage?

My Windows XP machine recently started to semi freeze on me every odd reboot after a few minutes of usage (different programs / no additional prg start at all). Update: I have now managed to get a ...
7
votes
2answers
3k views

How can I find out what's the bottleneck slowing down a particular process / the entire system?

Given a specific running process, is there a way to find out what hardware element is currently the bottleneck for its operation? In other words, is its current computation CPU-bound, GPU-bound, ...
6
votes
6answers
3k views

Should I use a SSD or HDD for “swap” on an old computer

Introduction Let's imagine some environment where the speed is not a factor. In my case I am using a really old computer for a "server" with a lot of stupid things ( personal lab ). It is more ...
6
votes
1answer
823 views

Why don't computers work at the speed of light? [closed]

Pretty simple question. Computers are made using electronics which uses electricity which I presume travels at the speed of light. If all the components are connected at this speed, why does my ...
6
votes
6answers
7k views

What is the fastest way to move a million images from one directory to another?

I have a million images totally 30gb of disk space that need to move from one local directory to another local directory. What will be the most efficient way? mv? cp? rsync? Something else? ...
6
votes
4answers
3k views

Poor Flash performance on Mac OS X?

I've been using Mac OS for almost 3 years now. What I have noticed couple of months ago, and what annoys me more and more over time, is that any Adobe Flash applications, content or adverts on website ...
6
votes
4answers
7k views

Easiest way to time a command line tool

What is the easiest/quickest way to time a command line tool? It doesn't have to be super accurate (+/- seconds is okay) since I expect this to take minutes or even 1 hour+. And writing a batch file ...
6
votes
7answers
25k views

Should I use “Raid 5 + spare” or “Raid 6”?

What is "Raid 5 + Spare" (excerpt from User Manual, Sect 4.17.2, P.54): RAID5+Spare: RAID 5+Spare is a RAID 5 array in which one disk is used as spare to rebuild the system as soon as a disk fails ...
6
votes
9answers
5k views

Snow Leopard sluggish after upgrade from Leopard

I recently upgraded from Leopard to Snow Leopard on my white Macbook (mid-2007) and immediately noticed a bunch of performance issues: Finder is a lot slower at displaying the Applications folder. ...
6
votes
11answers
35k views

Will an SSD speed up an Atom-based netbook?

I have an Asus EEE PC 1000H, which I bought for its light weight and great battery life. However, it is painfully slow. Judging by the constant flickering of the HDD light, disk I/O looks like a ...
6
votes
7answers
162 views

Does Seven suffer of a performance decrease compared to Windows Vista?

I have to format and reinstall Windows on an old laptop (bought around 3 years ago) because of usual degradation of performance of Microsoft operating systems.. The computer had Windows Vista and I ...
6
votes
4answers
11k views

Can SSD raid be faster than ramdisk?

So a typical ssd will have a read speed of 250 - 500 mb / second. And a ram will have about 10x than that. My question is: Can 4 ssds with raid-0 be faster than a single ram memory block for some ...
6
votes
6answers
8k views

Thunderbird very slow with Gmail

I'm using the latest version of Thunderbird with 3 Gmail accounts. Every time I launch it it seems it's downloading all my messages again. I've compacted folders (is the action working for the 3 ...
6
votes
5answers
20k views

Photoshop CS5 insane slow on Windows 7 x64 Ultimate

I've bought a powerful machine, Intel I7 720Q with 8 GB RAM and 7200 RPM HDD and Radeon 5870 with 1GB VRAM, and after installing the new Adobe Master collection CS5 I found out, that both Photoshop ...
6
votes
9answers
4k views

SSD for Visual studio : Intel X25-m G2 or OCZ Vertex

looking for laptop upgrade, and thinking about SSD drive. Laptop would be Dell Studio XPS with T9400 as i can get one for a very good price. So i was thinking about replacing the built in 500 GB hdd ...
6
votes
2answers
7k views

Linux disk access slows down system

My system slows down even when the CPU load is less than 100%, and I think it's doing this because it's writing to the swap partition. Yes, my swap partition is on a different disk than my OS. I ...
6
votes
3answers
2k views

Profiling your windows operating system

I am boggled when I click on an application in windows and have to wait 10 seconds for it to respond. I wonder "you can run 16 billion instructions a second, what are you doing that keeps you from ...