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

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0
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1answer
33 views

Which is the most CPU-efficient virtualization solution on Linux? [on hold]

My scenario is as follows: I'm running Linux (Fedora) as the operating system for everyday use, but soon I'm going to have to do development using another Linux distribution. In order to avoid having ...
0
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0answers
11 views

Books on web scalability, performance, optimisation [on hold]

I wonder what books could you recommend on above subjects. I had a look on Steve Souders books but it seems that they are bit outdated. Web Optimization by Andrew B. King was published in 2008 so also ...
0
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0answers
20 views

Why is ATI Radeon HD7850 performance on Mac (Hackintosh) not as good as on Windows?

I am running Mavericks 10.9.2 with QE CI patch (working kext). However the performance in games is pretty low (<30fps, @1920x1080, no AA) My system specs are: Core i5 750 @3.3Ghz 16GB DDR3 ...
-2
votes
0answers
36 views

why windows 7 so slow even with enough memory left [on hold]

My laptop configuration: windows 7 ultimate sp1 64 bit. Cpu: intel core i5 m460 @ 2.53 g Memory: 4 g. after 2 years of lightly use (during night and or weekend), it's now bloody slow. opening any ...
0
votes
1answer
39 views

Slow LAN connection (especially receiving) on Windows 8

I was diagnosing my SMB performance issues when I noticed my whole network speed was off. These are my benchmarking results between my desktop and my Linux server: Both are connected using CAT6 and ...
-1
votes
0answers
37 views

What is my bottleneck? (gaming rig, i5-2500k @ 3.3GHz, 8GB RAM, GTX770, Xonar DG, SSD for 64-bit OS and games) [on hold]

I'm always wondering what I should upgrade next. My current motherboard is an ASRock Z77 Extreme 4, and I am not overclocking my CPU. I am air / fan cooled in a Cooler Master mid-sized tower with a ...
0
votes
1answer
26 views

Are there performance benefits of using 127.0.0.1?

I administrate a web application that runs on Windows IIS. Recently during an upgrade I saw the following message: "Could not connect to webapp-01:1000" I think that the web app and the windows ...
0
votes
2answers
44 views

Firefox bottleneck with lot's of tabs open?

I'm currently using Firefox 28.0 on a windows 7 system on a SSD. Sometimes, when I do some research, I open about 180 + tabs on my machine. This makes firefox super slow, without using the SSD or CPU ...
1
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2answers
40 views

What will give the most increase in Virtual Machine performance?

Our IT staff has been given the task of improving the performance of all of the VM's used at our company. This includes those remoting into a hyper-v server and those using their own VM's on their own ...
0
votes
3answers
30 views

How to give 100 percent CPU usage to a process

(windows 8.1 machine with i3) Is it possible to put a process using 100% of my CPU? I have a rather "slow poke" CPU and after a while working with an application, it gets really slow. I'm wondering ...
0
votes
2answers
34 views

How can I find out which parts of an Excel workbook are the biggest in size?

I have an Excel .xlsx that weights 47MB. I'd like to know which parts of the workbook are the heaviest and work them, since I haven't made much progress manually trying to identify and reduce the ...
0
votes
0answers
20 views

Groovy performance on Linux machine

I have a problem when I start Groovy on one of my Linux machines - it takes about 30 seconds to execute very simple command: groovy -e "" if I run strace on it, here is what I see where it stops ...
0
votes
0answers
8 views

Filesystem vs Object Store

Few months ago I created a PHP storage service, that serves as a bridge between our filesystem and web applications via its REST api. File metadata and file path (and "clustering" per storage type) is ...
-1
votes
1answer
49 views

How to speed up my computer? [closed]

I just bought new computer last week. This is my computer information: Operating System: Windows 8 Pro 64-bit; Intel Core i5 4570 CPU 3.20GHz (4 CPUs) ~ 3.2 GHz Memory: 4GB RAM, page file 12 GB ...
1
vote
1answer
26 views

MIPS as a measurement of raw integer data processing

I'm looking for a way to contextualize generational differences in computing performance. Is this a correct application of the MIPS measurement? MOS 6502 - 0.500 MIPS at 1 MHz. As an 8-bit CPU it ...
1
vote
2answers
63 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 ...
-1
votes
0answers
40 views

What is causing high CPU usage while playing videos?

Watching movies uses all of my memory and/or CPU. How can I resolve this? Laptop specs: http://speccy.piriform.com/results/TncirsVxs1b3MnD58DoAGIz Dell XPS M1330 Intel Mobile Core 2 Duo T7250 ...
1
vote
3answers
108 views

4 GB of RAM, only 2.67 GB usable

My laptop was using a 2 GB RAM and I thought it wasn't enough, so I bought a new 4 GB RAM stick. I have been playing graphic and memory-intensive games, such as Battlefield 4 (the Recommended ...
0
votes
0answers
20 views

windows 7 in one wifi-network slow

My roommate's Dell XPS is incredibly slow in our new wifi-network (new router - Netgear R6250 with dualband 2,4 GHz + 5GHz, ac 1600), but another Windows 7 computer goes normal. In another ...
-1
votes
0answers
31 views

Poor FPS with combo of R9 290 and FX8350

For some reason, since building my PC I have been receiving poor FPS in the majority of games I have played. I have been hunting for hours as to the cause of the issue, I just want to enjoy using my ...
0
votes
0answers
52 views

Low CPU performance with low usage and clock - Windows 8.1

I recently deleted everything from my PC and reinstalled Windows 8.1 from scratch. When I first booted into Windows everything was extremely slow though the CPU usage was very low (about 1%). After ...
0
votes
0answers
19 views

How to estimate the behaviour of a specific process in a non-ideal world?

I am trying to estimate the performance of a specific program (let's call this program as P) that is running on multi-core Linux computer. Currenlty, I'm using tools like perf, top, mpstat, iostat, ...
1
vote
1answer
28 views

SSHD + full encryption: performance boost?

SSHD on itself as I heard is pretty nice. But what if I would full encrypt the SSHD with Truecrypt or whatever? Do I get still some performance boost? I'm just asking because as I understood SSHD is ...
0
votes
1answer
32 views

Why Chrome is operating disk at a speed of several megabytes per second?

I found that Chrome is reading disk at speed of several megabytes per second: What does it read at my disk?
-1
votes
1answer
77 views

How to increase performance of a computer? [closed]

Currently I use Lenovo G62 laptop which runs on Windows 7 Home Premium. It has a 3 GB RAM and Intel i5 processor. Also Ubuntu 12.04 is installed along side Windows. For some days my laptop is really ...
-1
votes
0answers
33 views

CPU Causing Lags, Problems in Gameserver

I have recently realised that I was wrong about whether a server was dedicated or not (please see this), but however the gameserver applications that run on the dedicated server lag. This problem is ...
0
votes
0answers
12 views

Is it possible to save system memory by disabling FishEye System plugins?

I was wondering if it is safe to disable Atlassian FishEye system plugins I believe, that I don't need? It says this under plugin management: These plugins are integral parts of your FishEye ...
0
votes
2answers
64 views

Computer goes super-sluggish but Task Manager shows no CPU usage

At times, for instance after running a resource-intensive program, my normally quite stable Windows7 PC becomes virtually unresponsive for as long as a couple of minutes. Even changing directory in ...
0
votes
0answers
16 views

HP Z-600 Workstation does not use all RAM or cores

I have an HP Z-600 Workstation running on Windows 7 Professional w/ a NVIDIA Quadro 4000 Graphics Card, 48 GB RAM and (2) 6-core processors for a total of 12 cores. When I perform a heavy operation ...
0
votes
0answers
51 views

Windows 8.1 double cpu usage and very slow

I have several computers of identical spec (1.9Ghz i5 scaled to 1.3, 8gb ram, 256gb ssd) running windows 8.1 (installed directly from an 8.1 cd, not upgraded) but since yesterday one has been very ...
0
votes
0answers
39 views

OCZ RevoDrive X2 runs at half speed

I have a OCZ RevoDrive X2 128GB in RAID 0 mode (two 55GB partitions) installed on my P55A-UD3 mainobard. I installed a fresh copy of Windows 7 64 bit and provided the OCZ drivers during install. When ...
0
votes
2answers
41 views

Playing music while compiling code lags the music, what kind of laptop CPUs avoid this? [closed]

When I play music while compiling code on my laptop (Intel Core 2 Duo T8300), the music stutters and lags. In terms of laptops, what Intel CPUs are capable of compiling without interruptions in my ...
0
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0answers
51 views

Very slow volume expand on Synology ds2413+

I've posted this elsewhere on the internet aswell, and will obviously reply in both places if a proper solution is found. I am attempting to expand SHR volumne (2x4TB, 1x2TB) with additional 4TB ...
0
votes
1answer
40 views

Grunt on virtualbox is extremely slow when editing files from shared folder's host machine

My setup consists of a virtualbox running Linux Mint 16 Mate as the guest and Windows 7 as my host. I am running bridged network types although this problem occurs on any network type I choose. I am ...
0
votes
2answers
36 views

Is there a way to build cluster machine that behaves like a single PC? [closed]

Is there some way to build a cluster from several desktops in such a way, that it can run an unprepared application and be seen as just a multicore CPU? I understand it will be a lot slower than ...
-2
votes
1answer
62 views

Windows 7 x64 3.2Gb RAM usable instead of 4Gb installed [duplicate]

I have two questions that bothers me, and for which I couldn't find an adequate answers here. This is my laptop's configuration: HP Probook 455 G1 (Windows 7 Ultimate x64) AMD A8-4500M - 1.96Ghz ...
0
votes
1answer
33 views

Massive slowdown in HDD

I was running a multi-threaded program that makes huge amount of I/O operations, Basically reading/writing Millions of files. I had some problems/bugs and I used to halt the program to fix something ...
1
vote
0answers
35 views

Windows boot performance - 52 seconds to initialize drives?

I had an issue with my primary SSD and I replaced it with another from a different brand, and at the same time I reordered my other 2 mechanical (C=ssd, D & E=mechanical). Now, when I load ...
0
votes
1answer
36 views

Will I see an increase in performance if I use Windows 7 Professional over Home Premium? Regarding multiple physical cores

I have 2 physical cores and Home Premium specs say it only recognizes one but Pro recognizes multiple. If I swap out my Home Premium with Pro will I see an increase in performance? I have an Intel i5 ...
1
vote
0answers
16 views

some programs running much slower after mscvrt runtime redistributable delete/reinstall

UPDATE: It appears that there may have been an unfortunate coincidence. It seems that right around the time I was doing these builds and deletions of redistributables, my laptop power adapter was ...
0
votes
1answer
18 views

How to Find the Bottleneck when Transferring Files over WAN

This question may be a little too broad, but I'm looking for some methodology to identify a transfer speed bottleneck. I'm using rsync to transfer files between 2 NAS devices (DNS-323 to be specific) ...
0
votes
2answers
37 views

Ubuntu 13.10 - make eth0 or wan0 interface upload/download into slow motion for testing software

I have a software where i need to test by making some low speed internet, very limited upload/download, after some time auto disconnect and reconnect such scenarios. I have found that i can try wanem ...
3
votes
0answers
48 views

High I/O system hanging

I have a Fedora 20 box that i'm trying to import a massive amount of data in to postgres on (billions of rows). System spec: 16GB RAM, 6 core 3.2 ghz, 500GB RAID0 PCIe SSD Everytime I/O load gets ...
1
vote
0answers
26 views

Java (SE) program execution is too slow on Debian Wheezy… do I need to “tune” the JVM?

SuperUsers. I wrote a desktop program to execute a simulation process (not worth copying the code here... it's quite a long program). If I run it on a MacBook Pro (Intel Core i7 2.2 GHz, 4GB RAM), it ...
0
votes
0answers
23 views

Will Linux select the fastest CPU in a SMP system

In a system with for example two physical CPU's, four cores per CPU. If one physical CPU is slower (lower clockspeed, other model) will the Linux process scheduler be smart enough to migrate a high ...
1
vote
0answers
28 views

LSI SAS 2308 MPT2SAS Linux Read/Write performance

LSI SAS 2308-8e (6Gb/s per Lane) PCIe 3.0 card. Average Read/Write Raw performance for 4 SSDs is very low around 430 MB/s (Expected 2 GB/s).I am having Intel Core i3 with quad cores and 4 GB RAM. ...
0
votes
0answers
22 views

Achieving very low network latency in Windows (<1ms)

I'm running windows server 2008 R2 on my server and I need to optimise my latency to a certain server, which is currently ~0.4ms (both servers are remote servers in the same datacenter). The server ...
-1
votes
1answer
16 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 ...
1
vote
3answers
43 views

OS on spinning drive, programs on SSD, will I see performance gains?

My work laptop runs windows 7 professional on a 7200rpm drive, which I feel is a bottle neck. Two programs I frequently use (they are always open) are Netbeans and Outlook, which seem to enjoy ...
0
votes
0answers
32 views

VMware Work station is very slow and it cause Windows to freeze

I am using VMware Work Station V9 to run Ubuntu (The latest version) and it is very very slow. I have given it 20 GB Disk Space / 4 GB RAM / but it still runs very slow. My current machine has 16 GB ...