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

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0
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1answer
62 views

Windows 8 slow after refreshing and rebooting

First, I apologize if this is in the wrong place. I use S/O a lot but not the other sites much. I have an HP Split X2 that has been very choppy as of late (takes several seconds to respond to any ...
0
votes
0answers
13 views

Page cache flushing behavior under heavy append load

I'm trying to understand the behavior of the Linux pdflush daemon when: The page cache is initially pretty much empty There is a large amount of free memory The system starts undergoing heavy write ...
0
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1answer
30 views

Speed issues when encrypting large file with mcrypt or alternatives

I want to encrypt a 100 GB file on my up to date iMac. It is hard to find out where the temp file is, so I can't find out the progress, but the encryption is already taking a full day. Is this normal? ...
0
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0answers
62 views

Copying between a remote share on Win2008R2 and Windows 7 is unbearably SLOW

I manage servers in 3 remote locations. Copying files from my workstation (Windows 7) and the remote servers (Windows 2008R2) is painfully slow. Yes my network card drivers are up to date, yes I can ...
-6
votes
3answers
182 views

14gb ram installed, only 6gb detected [duplicate]

I've checked each stick individually in the computer, by itself, to verify that the RAM was all in working condition. I have 2 sticks of 4gb RAM and 2 sticks of 3gb RAM. I'm not sure which are being ...
0
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0answers
105 views

Windows 7: Slow as can be - Low Resource usage

My main PC is a Dell from 2009 with Win7 SP1 that was originally a Vista machine. I installed a second HDD with Win7 on it and set Vista as the second drive. Its running with an Intel Core Q6600 ...
0
votes
1answer
70 views

How to tell, before buying, if a given graphics card will play Full HD video?

I am looking for the cheapest video card that would be capable of smooth playback of Full HD (1080p) video on a Full HD screen. An answer by @Mikhail on a related question briefly mentioned that: ...
0
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0answers
33 views

Network speed significantly reduced on Win Server 2008 DC

I started building a little server at home on a Gigabit network. I am running Windows Server 2008 32bits SP2. Before making the server a Domain Controller, I was able to get file transfers at an ...
0
votes
2answers
71 views

Upgrading MacBookPro

I'm using a Late 2011 13" MacBook Pro with an Intel i5 @ 2.4 GHz and 4 GB 1333 MHz ram. The computer has started to get older. I was going to upgrade the ram but since Mavericks come out, the ram ...
0
votes
1answer
52 views

Is copy speed depends on or vary with file-types?

I want to know is file-copy speed is depends-on/vary-with file-types? For same size file but difference in type of file (Ex: exe, dll, zip, ppt etc.). If It is depends then Why/How?
0
votes
1answer
33 views

One network, two macbooks, one is fast and the other is slow

I really need help for my friend. I know next to nothing about computers. My roommate and I both have macbook pros from the same year running OS X, are both connecting wirelessly to the same xfinity ...
1
vote
1answer
57 views

Software to do specific CPU load test [closed]

For the purpose of testing my own script that reports CPU usage I'm looking for a program to put CPU under a certain workload, for instance: 10%, 20%, etc. up to 100%. Is there a program that can do ...
1
vote
1answer
70 views

Why does Windows' performance degrade over time even when it isn't used? [duplicate]

I know that similar questions have been asked before (like this and this), but none of them answer my question. My problem is, as stated in the title, that when Windows isn't in use (some months) its ...
0
votes
1answer
86 views

Spiking Disk Usage

So recently my HP Envy 15 was sent away to get serviced as the BIOS corrupted after an automatic BIOS update. To fix this, they replaced the motherboard and that is all the supposed changes that they ...
0
votes
1answer
46 views

Chipset GPU causes a massive slowdown

My AMD Radeon HD 7700 recently broke (fan stopped working and GPU overheated), and now I'm running on internal chipset graphics, and it causes a massive slowdown of the whole PC. I've changed the ...
2
votes
2answers
518 views

Windows 7 / SMB2 slow network copy performance

Troubleshooting a tricky performance problem and wondering if this behavior is normal/expected. This seems to be related to SMB2, as switching to SMB1 resolves things. The question is whether this is ...
0
votes
0answers
107 views

Delphi XE2 runs very slow in VirtualBox with Windows 8.1 installed

While the whole guest Windows runs normal, Delphi XE2 is really slow, especially with code completion. And CPU utilization is near 50% though the Delphi itself does not get more than 10% during ...
1
vote
1answer
94 views

Windows Surface USB Recovery Drive

Ok so my friend lost her password to her tab and she cannot log back in to her tab, and being the leet haxor that I am, I know that the only way to refresh her tab and keep all her important course ...
0
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0answers
37 views

Browser downloads are extremely slow

I'm trying to download ProTeXt-3.1.3-060313.exe. When I use my browsers to download it, it downloads about 20KB/s. Than I found torrent file of the same program. I'm downloading it with 1.7MB/s now. ...
0
votes
2answers
57 views

Computer “Server”

so at home we had the idea of instead of buying 3 different pc's we would somehow create a "server" for the computers where a cable would come to our screens and keyboard and mouses, so the actual pc ...
4
votes
5answers
224 views

Is 1GB RAM so little?

I recently upgraded my old computer from Windows XP to Windows 7, and my computer became unbelievably slow. This is the hardware: Intel Pentium 4, 3.2 GHz 1GB RAM Radeon X800 GTO By unbelievably ...
0
votes
1answer
1k views

WD my cloud 4th is Super Slow

I am using a WD my cloud 4Tb and I have read other posts about users complaining about getting only 10Mb per second. My problem is that I am getting about 100kb/s to transfer a 125gb iPhoto library. ...
0
votes
0answers
51 views

What is the best order of item fields in for different group with various template zabbix?

In my company, we have about 30 servers which i monitor them by zabbix. Some of them are Windows base OS and some others are Linux (CentOS, Debian, Ubuntu) OS base. Basically i create a Template, ...
0
votes
1answer
42 views

Choosing processors for terminal server [closed]

I am going to buy a server for terminal sessions. It must be able to serve about 500 concurrent sessions without any significant impact on performance. Each session will run a quiet simple app with ...
5
votes
2answers
90 views

Would an array of SSD drives be able to succesfully substitute the system memory?

I watched a few videos trying to answer this. This video (youtube.com/watch?v=eULFf6F5Ri8) shows a bunch of guys stacking 24 SSD's reaching a peak of around 2GBps r/w. That's under the limit of the ...
50
votes
2answers
3k 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
56 views

How do I determine my bottleneck when executing unit tests?

I've a very large solution, with 11K+ unit tests, and on my desktop it takes about 30 minutes to run them; on my laptop it takes 60 minutes. NOTE: I've already swapped out the HDD for SSD and it ...
1
vote
3answers
187 views

Do I need Readyboost and page file if I have lots of free RAM?

I have 12 GB RAM installed in my laptop. I have currently both page file and ready boost disabled. Most of the time my RAM usage are under 6 GB. So, I still have 6 GB RAM all the time. Considering ...
0
votes
0answers
97 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 ...
0
votes
1answer
18 views

Improve backup performance by watching files added/modified in given directories?

I use SyncbackSE on Windows to back up files between two hard drives daily. Every time the application starts, it scans every single file in the directories that it watches before copying files that ...
0
votes
1answer
114 views

SSD Performance Dropping over time, is this expected behavior?

In reference to this, I found the below in an ad: I recently bought these drives a few weeks ago and then saw his picture. Do all SSDs suffer from such substantial performance drops over time and ...
-1
votes
2answers
270 views

RAMDisk faster than SSD? [closed]

The answer seems to be obvious, but I've been going back & forth with ASUS and Crucial support on this and have been getting differing opinions. Thought I'd bring it to Stack for a solid answer. ...
0
votes
0answers
17 views

Which disk IO operations are typically executed when working with flat preallocated VMDK

I usually pre-allocate whole disk space when creating my VMs and usually as flat single files. Since I'd like to move my VMDK to a different drive than my primary I would like to put it on one that ...
0
votes
2answers
129 views

Increase performance of Samsung 830 256GB SSD

I have a Samsung 830 SSD in my notebook connected to a SATA interface. This is a rather old HP notebook nc8430 which means SATA is SATA I and not II or even III that disk supports. But SATA I still ...
0
votes
0answers
84 views

Cannot download files on Windows 8.1

I can not download files in Windows 8.1. First, downlaod speed decreases to 10-20KB/s. Than it drops to zero. I think it is about security settings. But I could not detect which setting cause this. ...
0
votes
0answers
51 views

Hard drive: more RPM or higher capacity, which is faster?

I need a relatively fast hard drive (random access). For the same amount of money, I could buy WE Velociraptor (250GB, 10kRPM) or WD Red (1TB, 5400? RPM). SSDs or 15kRPM drives are too expensive even ...
2
votes
0answers
243 views

HDD very slow performance after full copy from SSD

The PC: Core i7-4770, 16GB RAM. There are 120GB SSD and 1TB HDD (new without any bads). On the SSD I had Windows 8.1 installed with all other stuff. Someday all programs exceeded 120GB limit and I ...
-4
votes
1answer
39 views

How fast does USB 3.0 perform?

How fast does USB 3.0 actually perform? I remember from quite a bit of experience that USB 2.0, while fast on paper, never in any practical situation hit those speeds in reality (the "slower" FireWire ...
0
votes
1answer
37 views

CDN vs Server upgrade?

Does a CDN help alleviate server load? My current server is getting overloaded and I am contemplating between using CDN vs just upgrading the server. I am under the impression that CDN will take most ...
1
vote
2answers
110 views

Thinkpad Edge E430 slowed down to a crawl

We bought 2 thinkpad E430 systems in September 2012. They were running Windows 7 pretty smooth as the time but as it stands today, my dad's thinkpad has slowed down to a crawl. Clicking on the start ...
2
votes
1answer
92 views

Optimal cluster size for random I/O

I'm specifically interested in the answer for NAND storage (SD cards, memory sticks). I have a Windows 7 laptop where I run 2 VM's inside VMWare, as well as multiple programs in the host OS. VM disk ...
0
votes
0answers
70 views

Advice on SSD performance bottleneck needed

I guess I need some advanced advice on SSD, SATA, in/out limits etc. I'm programming a video installation where I continously read and write quite a lot of data: To the first SSD, drive A, I write ...
0
votes
1answer
141 views

SQL 2012 in Hyper-V. Why are my queries slow until I drop and create any spatial index?

I have a spatial application that queries several tables (layers) each time the user pans/zooms the map. When I moved the SQL server into Hyper-V, I noticed that there was a several second delay when ...
0
votes
0answers
71 views

Does EnhanceIO supports TRIM on SSD?

Does EnhanceIO supports TRIM on SSD? Or it has own implementation of similar technology?
3
votes
1answer
102 views

SSD Wear-Leveling and Fragmentation

I'm trying to understand the effects of wear-leveling on fragmentation in SSD. To be more specific, when the SSD controller decides to allocate a noncontiguous block to a file because of ...
1
vote
2answers
187 views

Performance Issue with FB2.5 + Windows Server + Specific Hardware (DELL servers?)

I have a relatively small database (6GB) and my application can access it quickly when using Firebird 2.1 or Firebird 2.5 on a non-server version of windows. But if I try to use Firebird 2.5 on a ...
4
votes
1answer
829 views

What happens if I use RAM of a faster speed than the CPU supports?

Looking at the Intel E3-1230v2 CPU, under Memory types it says "DDR3-1333/1600". My question is, in what way does the CPU limit the RAM speed? What would happen if I put in a DDR3-2133 RAM chip ...
0
votes
0answers
76 views

Windows 7 offline files - Windows does not let me access network share due to “slow connection”

I'm using the "offline files" features in Windows 7 to have important files/folders from our network servers with me when traveling. I noticed the following problem: I am travelling and try to ...
0
votes
0answers
30 views

How to debug an extremely slow Windows 8.1 installation [duplicate]

A week or so ago, my computer with Windows 8.1 installed slowed down significantly. It wasn't a gradual slow down, but I do not recall any events (new installations or similar) that accompanied it. ...
1
vote
0answers
135 views

Slow write speed on external SSD

I am experiencing slow write speeds using an external Inatek USB 3.0 2.5" External Enclosure (UASP supported) with a Samsung 840 120GB drive. I just started using this setup on a late 2013 iMac as an ...