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

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13 views

Will a single VGA in a PCIe 2.0 x16 (x4 mode) slot perform the same as in a PCIe 2.0 x16 one?

I have an ASUS P8P67-M REV 3.0 which has the following PCIe 2.0 slots: 1 x PCIe 2.0 x16 (blue) 1 x PCIe 2.0 x16 (x4 mode, black) I've just bought a new VGA (GTX 970), which is huge, and ...
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0answers
16 views

Any tip to improve Java desktop programs' UX

Java-based Desktop programs are generally slow on start-up and laggy during run-time (e.g PhpStorm, …). Is there any way to enhance their performance?
-3
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1answer
33 views

Performance with HHVM on Apache and nginx

I had a new Ubuntu server, and I want some opinions on the web server. I am developing with PHP, and stuck between Apache and nginx. I have used WAMP without problems, but in this case, I want to ...
0
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0answers
18 views

Why does my system show lots of memory being used when the total amount is way less than reported? [duplicate]

I don't know if the title makes sense but Windows reports 7GB of memory being used but when I check the task manager I don't anything close to this amount being used. Here is the pic where the apps ...
0
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0answers
25 views

HDD activity causes lag

Whenever there is activity on the main HDD, my PC starts to lag. Most noticeably, the audio starts to stutter and slow down, and the fps in games drops by over 50%. It gets worse as hard drive ...
0
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1answer
28 views

How can I troubleshoot poor wifi performance?

I recently installed a new Gateway combined modem/router from Comcast/Xfinity. Since then 3 of our devices (Macbook Pro, 2 iPads) connect fine but the other (3 year old HP laptop) exhibits the ...
0
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1answer
53 views

Unexplained RAM usage

I have had my MSI GT70-20C laptop for almost a year now but recently I have been having trouble with performance drops due to the over use of memory. This occurs when i start doing activity or even ...
0
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1answer
21 views

Why is different throughput using netperf?

I am using netperf on Windows OS, with two computers connected with cross-over cable. First PC is using a Realtek FE network controller, and second PC has a Realtek GBE controller. With the first PC ...
0
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1answer
32 views

Performance of SSD w/ less RAM vs SATA w/ more RAM [closed]

Time to upgrade to a new development laptop. I'm trying to maximize performance which will include multiple virtual machines and android development. I believe there are 3 issues that will ...
1
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0answers
44 views

Is there a way to create “logical” monitors without sacrificing performance?

I'm in an odd situation, where it would be beneficial to be able to take a single 3840x1080 monitor and have Windows treat it as if it was actually two 1920x1080 monitors - one as the Windows ...
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0answers
47 views

NVidia performance tab under control panel on windows 8.1

I see that I have usual problem with performance tab, but I don't find solution with windows 8.1. The problem is that after I install all NVidia drivers on "clean setup" mode I have NVidia control ...
0
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0answers
35 views

Where to put “VirtualBox VMs” folder and “iso” files for optimal performance

Just installed VirtualBox for the first time. The host is a Windows 7 OS machine with 8GB of RAM and i7 CPU. I bought an SSD drive (Samsung 840 EVO) specifically to have better performing VMs. My ...
0
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1answer
21 views

Annoying Fan noise vs slow down

I was in a situation where when I would scroll or navigate through Google Drive, there would be a slowdown while a fan that had been silent revved up. It would also keep me awake at night. So today I ...
2
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0answers
34 views

What factors would cause java based programs to load very slowly? [closed]

I am at a loss here. I am trying to help someone get on my Minecraft server. He is the only one having trouble and I am not able to find a reason why. Basically we have 8 people on this server and ...
0
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0answers
32 views

Laptop starts to lag after some time [duplicate]

I've HP Pavilion 15 and It's been working all fine ever since i got it last October. It started to lag weirdly earlier today. When i open heavy applications or a game, mouse cursor starts lagging, ...
0
votes
1answer
27 views

Is “lag” just a part of Windows remote desktop? (“Can I work remote with nearly no lag?”)

I use Windows Remote Desktop to connect to my physical workstation at the office -- I remote connect from home where I have (conservatively) 16 Mbps Down and 6 Mbps Up. It's not that I experience ...
0
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0answers
26 views

Running Linpack on Linux High performance computer

I am trying to do some benchmarks on Linux HPC machine which specs are as following Total CPUs: 160 cores using latest 16C AMD Opteron Processors Total main memory: 640 GB of 1600MHz Total GPUs: 1024 ...
0
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2answers
70 views

Chrome is really slow on mac

I have Yosemite, 16GB Ram. Chrome started to work really laggy. You can feel the lag while scrolling a basic google search page. Till now I tried: Disable all extensions for incognito mode. But even ...
3
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0answers
107 views

Extreme FPS Drop in Counter Strike Global Offensive [migrated]

Please don't provide answers/suggestions on how I can improve/squeeze out more FPS. I want to know what caused the FPS drop and tearing. Thanks! Yesterday, I noticed a significant FPS drop ...
2
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1answer
125 views

Windows 8.1 CPU utilisation never exceeds about 30%

I'm writing a C++ application using Visual Studio 2013. The application iterates through an image doing some complicated analysis. The analysis is not particularly slow, but in order to test code ...
0
votes
1answer
81 views

Why is my disk usage 100% on startup on a Lenovo Notebook E540 running Windows 8.1 Pro 64bit?

I have a Lenovo Notebook E540, with Windows 8.1 Pro 64bit and with each startup the system will be almost stopped for more than 15 mins. When I checked the task manager, I found out that my disk ...
0
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1answer
38 views

How to run typeperf from batch file?

How to run commands like typeperf "\Process(*)\% Processor Time" -sc 1 from batch file? Ran from command line this command outputs something monstrous, while ran from bat file it prints Error: No ...
0
votes
1answer
37 views

Bench-marking my SSD gives unreasonable number

I have a SAMSUNG 840 EVO SSD (120GB) installed on my laptop. According to the SAMSUNG website, it has 520 MB/s max read and 500 MB/s max write (sequential). I am trying to benchmark it using ...
0
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1answer
35 views

What is my CPU speed?

I need the CPU speed of my KVM host. When I am using dmidecode, the result is the following : sudo dmidecode | egrep "Max Speed|Current Speed" Max Speed: 3100 MHz Current Speed: 3100 ...
0
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1answer
33 views

Why is my mouse lagging over Thunderbird email or folder pane?

In Thunderbird 31.5.0 I noticed an annoying mouse delay/stutter when mousing over the email list or folder pane. At the same time I see a CPU spike of about 25% (older WinXP dual core system). Why ...
0
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0answers
18 views

Does minimizing programs in Windows affect their performance? [duplicate]

I feel like when i minimize some programs like download manager, torrent client or other programs that are in progress, their performance decreases in comparison to programs that are shown on monitor. ...
-1
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0answers
16 views

My computer is slow now after pulling out my video card to look at what the graphics card is

So I was checking out my graphics card I pulled it out to check the name since it was on the bottom side of the card then I placed it back in correctly and now my games that I use to play are having ...
0
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0answers
20 views

have over 8GB free disk and “disk full” message appears

my macbook pro System Version: 10.9.5 Processor: 2.9 GHz Intel Core i7 Hard Disk: 250 GB Memory: 8 GB Number of Processors: 1 Total Number of Cores: 2 L2 Cache (per Core): 256 KB L3 Cache: ...
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0answers
99 views

How much extra workload would I assign the GPU if I choose to duplicate the screen instead of a single monitor?

As per my very little knowledge about computer graphics, I think the effect would be minimal. The reason is, given that the two screens has the same resolution, the pixel calculations are done exactly ...
0
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0answers
48 views

Intel turbo boost falls back to default 2.4GHz just when it's needed most. How can this be resolved?

Intel Turbo Boost has my laptop running at 3300 MHz most of the time. My power settings are maxed out, so it stays there most of the time while I'm browsing the Internet and stuff, but once I run a ...
0
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0answers
27 views

Check website speed using Firebug

I was using the “Net” panel of Firebug to check my website speed. I have a timer on the server script and it only takes around 0.02 seconds, but dang is it slow to render the page (6 seconds). Then I ...
0
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1answer
34 views

How to fix clock multiplier, it is 8x with 100 MHz Bus speed?

May laptop (HP G7) which is a low end laptop but can can overloaded even multiple tabs. I have seen it loading very slow if I search images on google search. I recently installed CPU-Z and found that ...
0
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1answer
36 views

Memory not performing as expected

This is probably a noob question but I really don't know why this is happening I bought the below parts recently ASRock 970 Pro3 R2.0 Motherboard HyperX Savage 8GB (1 x 8GB) Memory Module 2133MHz ...
-1
votes
2answers
33 views

What is CPU bottlenecks and how does it affect me?

First some facts: I have an MSI GT70 gaming laptop equipped with a GeForce GTX 780M 4GB graphics card. I am considering upgrading to an MSI GT72 equipped with a GTX 980M 8GB graphics card. I play all ...
0
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0answers
77 views

Sometimes slow/choppy performance, driver related I believe (Newly formatted machine)

EDIT: Since we have identified that at least my HDD is failing, I've went ahead and used this as an excuse to finally get an SSD. It will arrive tomorrow morning and I will format back to my current ...
1
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0answers
46 views

How to defragment or minimize a “directory file” on ext4?

I have quite an old home directory on HDD. There were lots of files created and removed and now the size of /home/username is 995328 bytes. Please note, I mean the size of the "directory file" (every ...
0
votes
1answer
31 views

Performance comparison for older server [closed]

Given the falling price of older decommissioned server hardware, I am considering purchasing one to use for my research at home. I will be running Linux, PostgreSQL, Neo4j and R-Server on it. I ...
-1
votes
1answer
44 views

What happens if I upgrade 2X2 GB RAM in my laptop to 2X4 GB?

My Laptop has following specs :- 2X2 GB RAM (2.99 GB usable) Intel core i5 @2.4 GHz quad core processor (2nd generation...maybe ) 1 GB Graphics card (utilizing memory from RAM) EDIT : 1) Also ...
0
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0answers
23 views

Subversion gets stuck when performing a network based operation after not communicating with the server

Our company uses Subversion, and ever since we upgraded to version 1.8 we encounter performance problems in network-based operations such as checkout, update, diff and log. The problem occurs ...
2
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0answers
27 views

Is it better to have 2x2GB Dual-Channel vs 4GB Single-channel RAM, performance-wise? [duplicate]

I know this has been discussed many times before but so far I’ve only found speculations and some blurry “experiences“ on this… Many just mix single and dual channel memory, or don't care about ...
0
votes
1answer
57 views

Distorted audio, lagging mouse, slow speed, no internet

So when I turn on my computer now the windows booting sound is all distorted almost like it's stretched or crackling, when I log in the mouse lags, and everything seems to load a bit longer. It can ...
0
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1answer
21 views

Debian server is very slow in spite of low CPU, RAM na SWP usage

From 3 days I experience problems with my debian server. When I stream media with samba transfer is about 20kb/s when it used to about 6 mb/s. Its my home server so its not internet issue. When I ssh ...
0
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0answers
49 views

How to fix slow Windows 7 on almost-full hard drive partition?

I'm using Windows 7 64-bit and Ubuntu 12 as multi-boot on an HP Pavilion DV4 2101tu. My hard disk partitions are almost filled. (It shows with red color in Windows.) Sometimes the whole system is ...
0
votes
1answer
45 views

serious disk performance problems, please help,

I have a Dell inspiron 7720 processor intelr core tm i7 3630qm 8 gm ram the problem is that me disk is always between 49% - 50%, then I noticed my disk had some "partitions" named as disk 0c: and ...
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0answers
46 views

Process Hacker - What's the difference between Disk and I/O?

As a sysadmin often having to deal with Windows systems with issues- be it servers with performance issues, or desktops with malware- I often spend a lot of time staring at he two different graphs in ...
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0answers
38 views

How do I make HDParm or equivalent settings persist in Windows?

I have a laptop with a harddrive that spins down so aggressively (after ~10s of inactivity) that it causes performance problems in games and various other apps that have frequent but spread out drive ...
0
votes
1answer
27 views

Combining two graphics cards - performance

I want to buy a new notebook, and to be honest I want it to run all modern games with as high details as possible. Recently I came across a notebook that had in its graphics card section written: ...
0
votes
1answer
18 views

OSX performance of near-full drive

OSX performance degrades terribly when writing to an HFS+ partition which is over about 96% full. It seems that every write request triggers some sort of process which takes about 10 seconds, during ...
0
votes
1answer
34 views

Printer “Windows Update” - Why always so slow?

In every version of Windows I've tested, when you click the "Update Windows" button, before adding a printer, it is always so slow to complete updating. Even if you have top-notch hardware and a super ...
5
votes
1answer
129 views

My SSD has extremely slow write speed. Any ideas what could be the issue?

Last year I put together a new PC with a PNY XLR8 SSD (http://www.pny.com/XLR8_SSD?sku=SSD9SC240GMDA-RB) Things have been great up until recently when I started noticing that network copies of large ...