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

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6
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5answers
18k 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
3answers
4k views

Practical RAID Performance?

I've always thought the following to be a general rule of thumb for RAID: RAID 0: Best performance for READ and WRITE from stripping, greatest risk RAID 1: Redundant, decent for READ (I believe it ...
6
votes
7answers
3k views

Running OS off a dedicated Hard Drive

What do fellow users feel about the strategy of having a dedicated OS hard drive for a PC? Basically all the Windows and Program Files are on one, high performance, disk whereas your data is stored on ...
6
votes
5answers
54k views

Windows 7 running slowly with low CPU usage and memory

I have a relatively new (under 2 yrs old) Windows 7 machine. It has 9GB of RAM, and an i7 core CPU (930 @ 2.8GHz w/ 8 CPUs). After about 8 months since a clean install, I noticed my computer was ...
6
votes
3answers
780 views

Does the amount of available free disk space in Windows (XP only?) impact performance?

I remember reading that when the available free disk space falls below 10% of the total disk space on the computer, performance is degraded. If true, can someone explain this in more depth than what ...
6
votes
2answers
2k views

Install 64-bit Ubuntu or 32-bit?

I'll be receiving a new notebook in a few days and was planning on running Ubuntu on it as it's compatible and the notebook has no OS pre-installed. The specifications are: Core 2 Duo, T6600, 4 GB ...
6
votes
2answers
916 views

Why is building a solution slower on a Core i7 than on a Core i3 processor?

Background: We have a C# solution with 49 projects and it uses VS2005 SP1 (didn't upgrade to higher version due to old version of Syncfusion 4.x lib). The project uses Ant with ISharpCode zip library ...
6
votes
1answer
2k views

Why are there many processes listed under the same title in htop?

Can anyone explain to me why there are sometimes 10 or 15 processes with the same title and "stats" listed in htop? I'm guessing there are multiple threads running - but that many of them obviously ...
6
votes
3answers
898 views

Which partitions in a windows system should be placed on a SSD for optimum gaming performance?

I'm going to build my next gaming system. I do not care for the load time of Windows 7. It could take 15 mins, I'd just do something else meanwhile. So I'm thinking I put the SSD disc only for my ...
6
votes
13answers
81k 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 ...
6
votes
2answers
173 views

Are virtual machines performant enough to be a primary workstation?

I have a MacBook Pro through my employer, but I prefer to spent most of my day in Linux. Will running Linux in a virtual machine (e.g. VirtualBox) in full-screen mode be enough slower than running it ...
6
votes
2answers
125 views

trying to get antivirus policy changed

I am a radiologist who spends all day taxing my computer with thousands of medical images and heavy duty image processing. Unfortunately, my hospital, and many like it, apply the same antivirus policy ...
6
votes
3answers
4k 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 ...
6
votes
1answer
4k views

Troubleshooting slow SSD

I have a Mushkin Enhanced Chronos 120GB SSD (http://www.mushkin.com/Digital-Storage/SSDs/MKNSSDCR120GB.aspx). Its performance is rated as: Capacity: 120GB Read Speed: up to 550MB/sec ...
6
votes
1answer
1k views

How to move a file from one location to another on the disk?

I want to move a specific file (for example a binary .exe) that occupies a specific low offset (physical position) on my HDD to a lower offset (external edge of my HDD). From what I know I can't do it ...
6
votes
3answers
5k 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 ...
6
votes
3answers
8k views

How do I find out which processes are causing the most disk activity?

I am hoping to find a way to do more performance monitoring--specifically, I hope that monitoring disk activity on a per-process basis will help me decide which programs are causing the most trouble ...
6
votes
3answers
2k views

How to measure performance gain with defragmentation?

I believe I understand the basic concepts of fragmentation of data on hard-drives, and the concept of defragmentation to counter the effects of this. What I don't really understand is how one actually ...
6
votes
3answers
1k views

Visual Studio Performance problems when writing XAML

I've dealt with Visual Studio performing terrible for too long now. Now I'm past the point of being emotionally broken and need help. I can't figure out how to fix the issue of the Visual Studio ...
6
votes
7answers
11k views

Are we suppose to manually delete contents of /tmp?

I was under the impression that /tmp will regularly delete "old" files. Seems to me that /tmp will just grow as long as it wants to and won't delete anything. Some people say it's betetr to just leave ...
6
votes
2answers
587 views

Why is the grep/-r/--include combination slower than the find/-exec/grep combination?

From my understanding, the two following commands roughly accomplish the same thing: Command 1: find -name "filename.xml" -exec grep someString {} \; Command 2: grep -r --include=filename.xml ...
6
votes
2answers
2k 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 ...
6
votes
2answers
308 views

Are usb pendrives/sticks random access?

Do USB pendrives/sticks have random access (i.e. accessing one block will take equal amount of time, regardless of the previous block read) characteristic?
6
votes
5answers
12k views

Do shortcuts and folders on the desktop really slow the PC down? [closed]

Normally whenever I repair a PC I tell the customer that they should limit the amount shortcuts or folders or files that they place on the desktop to speed up performance (it also really annoys me ...
6
votes
8answers
11k views

Windows 7 Loading Very Slow

I've had a problem that only started to occur yesterday. When I boot into Windows 7 and log on to my user account, the computer gets very laggy and slow for at least 5 minutes. Icons take ages to ...
6
votes
5answers
2k views

Why is Firefox 3.0 so slow in Linux?

I'm running Firefox 3.0.14 32-bit on Ubuntu 9.10 32-bit. It's much slower than in Windows XP on the same machine. Does anyone know why? Also, what's a possible way to improve the performance? ...
6
votes
5answers
2k views

Firefox still working in memory after being closed

I'm about ready to give up on Firefox, because whenever I shut it down, it's still working in the background, and if I leave it up it, then over time it works more and more. My hard drive is really ...
6
votes
1answer
438 views

Does Having Computer Running Idle Impact Solid-State Drive's Life Expectancy?

As long as computer is operating, OS constantly performs small writes to storage medium. This is what I have not paid attention to earlier until I saw total writes in CrystalDiskInfo, Intel Toolbox ...
6
votes
3answers
371 views

Does Windows 7 on a Solid State Drive suffer noticable “Windows Rot”? [closed]

"Windows Rot", defined as the build up of old programs distributing shared files everywhere, having several unnecessary programs running at start up and cluttering the registry can significantly slow ...
6
votes
1answer
583 views

Is a larger hard drive with the same cache, rpm, and bus type faster?

I recently heard that, all else being equal, larger hard are faster than smaller. It has to do with more bits passing under the read head as the drive spins - since a large drive packs the bits more ...
6
votes
1answer
7 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 ...
6
votes
1answer
280 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 ...
6
votes
1answer
296 views

Performance testing software for PC

Can you recommend me a free performance testing software for my PC? I used the demo version of Passmark Performance Test, but the trial period is now finished. Do you know of a similar software?
6
votes
5answers
83k views

How to format my mac without the installation disk?

My mac has several problems, running very slowly being the greatest. I have decided for that reason and a few others that it will beneficial to format my Mac. However, I do not have the installation ...
6
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 ...
6
votes
2answers
987 views

Benchmarks relevant for a Visual Studio .NET development workstation

I am developing a system with Windows 7 64-bit, Visual Studio and Sharepoint on a virtual workstation on some kind of VMWare server. The system is painfully slow, with Visual Studio lagging behind ...
6
votes
1answer
1k views

How to benchmark kernel (-Os vs -O2)

It seems logical to me that on a 64-bit kernel compiling it to optimize for size might help overall. (My distro of choice uses -O2) It has the benefits of more registers and memory and perhaps less ...
6
votes
1answer
19k views

Spikes of 99% disk activity in Windows 8 Task Manager [duplicate]

For some reason Windows 8's Task Manager reports spikes of 99% disk activity for hours at a time. Looking at the entries in that column, however, data doesn't seem to be getting written any more ...
6
votes
1answer
5k 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 ...
6
votes
1answer
4k 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 ...
6
votes
3answers
433 views

How to investigate why my firefox is so slow?

My Firefox v3.5.2 has loads of extensions (48 total, 33 enabled), also considerable database of visited pages and in general rather old profile. Flash is disabled by NoScript, so this is not an issue. ...
6
votes
1answer
2k views

Performance gains from secure-erasing an SSD?

Are there performance gains to be had by secure-erasing an SSD? (the secure-erase function, not securely zero'ing out data) I'm using an Intel 320 SSD 160GB as my main OS drive. It's been a couple ...
6
votes
1answer
168 views

Fairly new drive has high usage but slow speed. Whole system running hot

I originally suspected malware, because my pointer skips and my system gets slower and slower by day. I recently had a reg entry get messed up for no reason. But after talking with some people in chat ...
6
votes
1answer
334 views

View page source in Chrome is extremely slow

When making a page request to see the output of a large object, via a PHP's var_dump or print_r, a regular Chrome page will display the output quickly. To see a formatted output, I usually view the ...
6
votes
1answer
548 views

Strange performance from RAID5 using WD RE4 disks

I've noticed a bit of a performance issue with some WD RE4 drives I'm using under AMD's hardware RAID solution. First a bit of background: Environment: Windows 7 home premium x64 HDD's: 3x 1TB WD ...
6
votes
2answers
2k 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
0answers
235 views

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

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 ...
5
votes
12answers
3k views

Lightweight virus scan for win XP [closed]

I have an older machine (athlon 1500+, 1.5Gb RAM) running XP on which I not currently running an on access virus scanner. I do scheduled scans with clamwin and malware bytes. I would like to find a ...
5
votes
5answers
4k 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? ...