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

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1answer
18 views

SSD Performance showing as 'bad'

Today I stripped down and rebuilt my PC (to get rid of surplus cabling, and to give it a clean since it was pretty dusty in there), and everything is running fine. Well, except my SSD (apparently). ...
1
vote
1answer
47 views

Linux Virtual Machine on VirtualBox suddenly running slow

I am running a VM using Virtual Box (version 4.2.26, but had same issue with v4.3.14) The VM was created using Vagrant. It runs headless, it just serves up websites and I use "vagrant ssh" to get to ...
4
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4answers
1k views

What does “Optimizing performance…” in Acrobat mean?

When the Acrobat installer says "Optimizing performance...", what is it actually doing?
2
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3answers
7k views

How can I determine what is causing my hard drive to become busy/stuck?

I've got a relatively new Dell e4300 laptop running Windows 7 32-bit (fully updated). Several times throughout the day, it will seem to hang. When this happens, I'm able to move the mouse but the ...
5
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11answers
18k 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 ...
4
votes
4answers
7k views

Some Portions of Computer Running Slow (Specifically Graphics)

I noticed that a few things are running slow today on my Windows 7 laptop. Specifically, they are: Opening and closing windows takes several seconds for the animation to complete. Windows media ...
0
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0answers
19 views

Linux, vim and ssh: why is vsplit slow?

As soon as I have more than one file visible with a vertical split (= :vsplit) the moves and screen refresh become sluggy. I've noticed that on many different Linux systems (old and my very recent ...
2
votes
0answers
41 views

Would a powerful enough D-Wave system (quantum computer) be enough to reach over 50% of bitcoin?

Bitcoins computational power is about 64 exaFLOPs. The most powerful supercomputers don't even reach one of those exaFLOPs. D-Wave, unknown as I couldn't google it, but I read that it is 3,600 times ...
1
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1answer
497 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 ...
0
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2answers
262 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
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2answers
28 views

Is there a good computer hardware performance monitoring interface for Windows 8.1?

FYI, this is my first post on SU: I'm looking for something that either sits on my Start menu and/or my desktop and shows me live hardware performance statistics. I'd like to see CPU usage, RAM ...
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2answers
50 views

Why is my computer slower now than it was when I bought it after a clean installation? [on hold]

I've just reformatted my home PC. It's an i7-920, 16GB RAM machine (so it was pretty good back in the day). I've installed a clean installation of Windows 7 and I'm wondering why the PC is much ...
0
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0answers
37 views

Computer became slow recently

System Specs: Windows 8.1 64-bit Intel Core i7-4700MQ CPU @ 2.40GHz, 8.0GB RAM, Intel HD Graphics 4600 / NVIDIA Geforce 750M GT Computer has been recently slow. This includes startup ...
2
votes
1answer
46 views

What are the differences between “scientific GPUs” and “gaming GPUs”?

I am currently working with neural nets and I recently made my code much faster by configuring a framework correctly to make use of a GPU. The GPU that is used is a Tesla C2075, which is part of the ...
4
votes
3answers
1k views

Why is gzip slow despite CPU and hard drive performance not being maxed out?

I have some JSON files, 20 GB each, that I want to compress with gzip: gzip file1.json This takes up one full CPU core, all fine. It processes around 25 MB/s (checked in atop), my hard drive can ...
0
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0answers
12 views

My System speed seems slower than the components would predict

I run an Intel 4770k CPU overclocked to 4.6 GHz, 32 GB G-Skills DDR RAM, primary boot drive Samsung 840 SSD, 10 TB auxiliary drives, 3 GB Radeon video, 1000 W PSU, Zalman GS 1200 case with Windows 8 ...
0
votes
0answers
24 views

How can I improve the performance of my audio software?

I am running OtsAV on Windows XP. The way it works is by buffering a small amount of data from the hard drive just before it needs to play it. It used to give flawless sound no matter what else was ...
1
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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, ...
2
votes
3answers
640 views

linux: accessing thousands of files in hash of directories

I would like to know what is the most efficient way of concurrently accessing thousands of files of a similar size in a modern Linux cluster of computers. I am carrying an indexing operation in each ...
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
3answers
2k 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. ...
1
vote
1answer
36 views

“Disk” always at maximum usage

I recently opened up my laptop to fix a faulty power connector. Since then I have noticed my disk usage (not sure what it actually corresponds to) has been very high, as in the screenshot below: (Note ...
0
votes
1answer
15 views

SSD Setup OS/Programs/Documents

I am trying to configure a new computer using SSD's. Am leaning toward the following configuration: 1) SSD of about 120GB solely for OS 2) SSD of about 120GB solely for programs I would use (MS ...
28
votes
8answers
24k 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 ...
14
votes
2answers
5k views

SSH is slow to make a connection [duplicate]

I just installed Ubuntu 11.10, and whenever I try to SSH into my servers it's very slow. Before it displays the password prompt, it can take between 40 seconds and 60 seconds. I use: ssh ...
0
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0answers
66 views

poor write performance with RAID 5 array

I have an Intel RS2WC080 RAID controller card connected to an array of 8 WD Black 4TB SATA3 drives, in a RAID5 configuration. While the read speed is ~750MB/s the write speed hovers around 45MB/s. I ...
1
vote
3answers
677 views

Photoshop brush constantly lagging despite good computer performance

For now I've been using Paint Tool SAI for drawing, but I bought Adobe Photoshop CS6 lately and I noticed intolerable lagging while drawing with standard brushes. Delay is even bigger when I choose ...
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 ...
0
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0answers
20 views

Low Memory Performance

I am currently benchmarking some of my code to see where the bottleneck is. My memory is DDR3 1066MHz DualChannel Mode This should result in 17GB/s peak memory performance. With my code I am ...
1
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0answers
27 views

Slow Windows Application Startup

I have Windows 8 Pro/i5 3320M laptop with 8GB memory. Java based applications such as Eclipse, Phpstorm takes about 15-30 mins to load. (i assume issue is with java apps, others work fine). I tried ...
18
votes
2answers
7k views

How can I identify the culprit of my slow Windows shutdown?

My computer is taking a very long time to shutdown. How can I identify the culprit? I don't want to wait minutes for my computer to shutdown... Is there a program I can use to track how long it ...
0
votes
0answers
37 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
1answer
505 views

Parallels Shared Folder + IIS 8 = really slow page loads

I've recently switched over to using a MAC as my main computer, but I am a .NET developer so require the ability to use Visual Studio and IIS so have setup a VM for this. I've got everything working ...
1
vote
5answers
467 views

What is the maximum amount of files to put in 1 folder for performance?

I have read in the past that is it good practice/performance to limit the amount of files you put in each folder, in this case it is user uploaded photos, My site has around 1,000,000 user photos ...
2
votes
1answer
3k views

Google chrome high hard disk usage

I'm on Windows 7 from boot to VHD. I got a lot of RAM and my pagefile is disabled. This OS can be up for days, even up to 3-4 weeks of working time without restart. I put it to sleep\suspend quite ...
0
votes
3answers
7k 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
18 views

Asus N56VB-S4016H disk response time

We recently bought 3 Asus N56VB-S4016H laptops, and although the specs are great for the price it costs, we are experiencing similar issues on all 3 of the devices. After startup, a cold boot or from ...
0
votes
2answers
34 views

Does writing to SSD influence SSD Read spead?

I use my SSD to read and write at the same time, and I found that writing influences read performance quite a lot. Example: Without write, my read may be X MB/s, but with write, my read became 0.5X ...
-1
votes
2answers
45 views

How much faster is SSD compared to regular hard drive?

http://www.seagate.com/internal-hard-drives/solid-state-hybrid/desktop-solid-state-hybrid-drive/ Some says that using hybrid drive is 4 times faster. Some says it depend on data read. SSD is only ...
4
votes
5answers
547 views

New laptop running extremely slow?

I've purchased an Alienware m14x laptop but I am experiencing performance issues - It's slow. Quite slow actually. My other laptop that has a Celeron CPU is going faster than this and that computer is ...
0
votes
0answers
25 views

why is my sort slower with more ram?

System specs below. I recently purchased 2X4 RAM: Corsair XMS3 8 GB (2 x 4GB) 1333 MHz PC3-10666 240-Pin DDR3 Memory Kit CMX8GX3M2A1333C9 I already had 2X2 in there for a total of 12GB: Corsair ...
0
votes
0answers
9 views

Why does top and Google Compute Engine give me two totally seperate cpu % values?

So to preface this, I haven't done much in Linux since a decade ago when I was in college, so I may just be doing something stupid. However, for this project I am working on I'm performing a load ...
6
votes
2answers
3k views

How do I determine the optimal maximum simultaneous transfers in Filezilla?

How do I determine the optimal maximum simultaneous transfers in Filezilla?
-3
votes
1answer
338 views

Can my system manage 8GB of RAM?

Here is my system configuration: Motherboard: Asrock G31M-VS Processor: Dual Core 2.5GHZ RAM: 1GB DDR2 667MHZ Now I am trying to upgrade my memory. I checked crucial.com and found that my ...
0
votes
0answers
27 views

What is fastest way to backup a disk image over LAN?

Sometimes I boot sysrescd or a similar live linux on a PC to backup the hardrive over local network to my server. I noticed many times, that the transfer speed is not optimal (slower than HDD and ...
0
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0answers
9 views

Rail's FileStore with Linux Disk Caching or RAMdisk?

I have a Ruby on Rails application that stores it's catched files on the filesystem (Rails file-system cache). I was thinking about changing to memcached Store, but a short test shows it isn't a big ...
12
votes
6answers
19k views

Setting process priority everytime it is launched?

My work computer experiences a lot of slowdown, so I want to do what I can to make sure the stuff I need to be response actually is responsive. For example, I run Pidgin, which loads everytime I ...
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votes
1answer
28 views

Installation Optimisation With Limited SSD Space

Tomorrow, I need to rebuild a windows 7 machine due to various issues. It currently has a 500GB HDD as the primary drive, with a 120GB SSD. As a developer, I need to keep as much space free as I can ...
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votes
2answers
50 views

Why does a c++ code run significantly longer on one computer than another? [closed]

The code is exactly the same -- I copied it from one computer to another. The code is compiled with g++-4 (4.9.1) obtained from fink on OSX on both machines, and is not run in parallel. Compiler ...
0
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0answers
33 views

Automatic Maintenance Significantly Slows Down Computer

Problem I've found on several occasions that I've gone to use my computer only to find that it's practically unusable; just about everything runs extremely slowly. Symptoms The action center flag ...