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

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13
votes
7answers
1k views

Can a massive MySQL data import on an SSD damage it?

I have to import quite a lot of data (~100 million rows, ~100 times) into a MySQL database. Currently, it is stored on my hard disk drive, and the bottleneck of my import seems to be the hard disk ...
0
votes
5answers
38 views

Random spikes to 100% CPU lasting several minutes, (intervals, duration, processes) W7 PRO Dell E6400

For the last month or so I'm plagued with often, yet unexplainable spikes to 100% CPU load. Usually then Task Manager shows one or two processes taking 50%+ of CPU (not always the same: svchost, ...
1
vote
1answer
7 views

VMware vSphere / ESXi 5.5 recommended guest system architecture

I am currently setting um VMware vSphere / ESXi 5.5 on a DellPowerEdge2900 and since it's an older server the following question came to my mind: Considering performance should I install guest ...
-4
votes
4answers
140 views

How To Increase Speed of PC [on hold]

I am using windows 7 32bit O/S; 2GB RAM; Intel core i5 2.50GHz processor. My PC is very slow and I have been using CCleaner to clean up my PC. What steps should be taken to increase the speed of my ...
104
votes
9answers
13k views

Why does emptying disk space speed up computers?

I have been looking to a bunch of videos and I now understand a bit better how computers work. I understand a bit better as well what is the RAM, the volatile and non-volatile memories or the process ...
0
votes
1answer
45 views

Computer super slow and laggy, while resources are not being used

Ok so I have a custom built PC; specs below: CPU: Intel Core i7-4700 Motherboard: MSI Z97-G55 RAM: 16GB DDR3 Video Card: PNY nVidia GTX 770 Primary Hard Disk: Samsung 850 Evo Primary OS: Windows 8.1 ...
1
vote
1answer
26 views

Arch Linux insane memory usage

I just installed Arch Linux and set it pretty much up how I want it to be. At the moment XFCE4 with LighDM, Firefox and a few other little applications are running. I wanted to see whats going on in ...
2
votes
2answers
77 views

Windows XP (32-bit) system with 8GB RAM, will I still get dual-channel benefit?

I am running a legacy Windows XP 32-bit PC (not for internet use of course). It has 2x4GB RAM which operates in dual-channel mode. Obviously Windows XP can only use 4GB RAM. One could argue the ...
-1
votes
0answers
38 views

Disk transfer rate suddenly became extremely slow Windows 8.1

I've been running Windows 8.1 x64 on my AMD Phenom PC for a long time without serious problems, and today my HDD transfer rate got ridiculously slow. The Seagate Barracuda 7200 1TB HDD was bought ...
2
votes
1answer
35 views

Ethernet switch throughput

I'm not a network/hardware guy so please bear with me if I'm using the wrong vernacular in my question: My office recently upgraded our Internet from 50/10 Mbps to 150/20 Mbps. For this upgrade, we ...
0
votes
1answer
23 views

Shared hosting: how do they estimate server CPU usage? [closed]

I'm using several shared hosting services and wondered many times: how do they calculate those "CPU seconds"? For example one of those limiting me with 300,000 seconds/month, 10,000 seconds/24h and ...
0
votes
1answer
45 views

Laptop running too slow lately

I bought my laptop in late 2013 with the following configuration: Motherboard / model: NP-530U3C Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz RAM: 4GB DDR3 Hard drive: 500 GB 5400 RPM + 24GB SSD OS: ...
0
votes
2answers
76 views

Going silent: will an SSD with a newer but 'slower' CPU run as fast? [closed]

I currently have a relatively old (2009) Shuttle XPC with an AMD Phenom X2 550 3.10GHz and 2 SATA HDD drives. I use it as my work computer, usually running a couple of browsers, XAMPP, 2 or 3 ...
0
votes
0answers
18 views

How can I determine whether the disk read and write speeds on Windows 8 task manager are normal?

On Task Manager, when I start a heavy application and monitor its start on Task Manager, my disk's read and write speeds remain between 1MB/s and 2MB/s with some peaks at 10MB/s in rare cases. ...
0
votes
0answers
17 views

Internet speed spiking/going extremely slow on my pc for on ethernet for no reason?

guys my connection is spiking like crazy and only on my pc, it's been happening for days now and i have no clue why, on win8 and win10 speedtests like this when usually its something like this ...
0
votes
0answers
36 views

Mismatched upload vs. download speeds between two computers on the same home network

I'm busy setting up my Plex server on a separate Wi-Fi router and I'm testing the transfer speeds between two MacBook Pros. It's just got me baffled because I've come across something weird. Not ...
5
votes
2answers
143 views

Choppy CSS3 animations in all browsers on yoga pro 2

This might seem as a broad question because I don't know where to start. When I compare the same CSS3 animations between my old Lenovo Yoga 13 and my new Lenovo Yoga 2 pro, my old laptop performs much ...
1
vote
0answers
40 views

WPA shows NIC driver DPC fragment running for 232 milliseconds

I'm stress testing my UDP proxy on a machine with 8 logical CPUs. At around 14 thousand UDP clients, one of the CPUs (CPU 4) starts spiking and UDP throughput (as shown by Task Manager) plummets to ...
0
votes
0answers
14 views

RHEL upgrade makes AIDE to run slower

ALL, For our product we upgraded from RHEL 5 to RHEL 6. Unfortunately AIDE tool that we use for intrusion detection started to slow down it's scan for about 2-2.5 times. I checked and the ...
0
votes
1answer
24 views

CPU Load + Frequency per core in linux terminal?

I am doing scientific computing and I need to keep an eye on the cpu frequency and load of each core (there are 2 cores, on Ubuntu 14.04 w/ Gnome3). I can see the frequency with this bash script: ...
0
votes
0answers
11 views

Windows Server: Statistics

I have a small home server running Server 2012 R2. I would like to be able to view general statistics about its performance including counters for CPU, memory, disk, etc. Ideally this would be ...
0
votes
0answers
31 views

Extreme speeds from a hard drive that shouldn't be this fast?

I have a Seagate 7200rpm drive and for some reason ATTO Disk Benchmark concludes that this drive is around 220 MB/s read and write. Isn't this unrealistic for a drive of this kind? ATTO displays the ...
1
vote
0answers
45 views

Why is computer slow in switching between opened applications?

I like to open a lot of Chrome tabs, but when I try to switch between open tabs, the tab tends to re-render. When I have some other applications open alongside with chrome, those applications also ...
0
votes
1answer
64 views

My cpu claims it is 2.53 ghz but never reaches it. why?

I run cpu burner, and set c state limit to c0. all power savings are disabled and i set multiplier to 20T which is the only allowed turbo multiplier on throttlestop. maybe there could be another ...
0
votes
0answers
101 views

RAID to handle 800 random blocks per second

This is a homework. We are supposed to pick HDD, imagine we are buidling RAID to handle 800 random blocks per second (550 reads/250 writes). I have picked RAID5 made out of 3 HDDs. But it is too ...
-1
votes
1answer
52 views

Why is my Lenovo G500 laptop computer running slowly?

The one I’m currently using is a Lenovo G500, Intel Core i7, 2.10 GHz, 8 GB RAM, 1 TB HDD, Windows 8.1 64-bit, AMD Radeon HD 8570M, Intel HD 4000. The problem is that it is slow. It lags, even if I ...
1
vote
0answers
62 views

How to measure a HDD's RPM speed?

EDIT: My original intent with this question was to figure out if it would be worth purchasing a 7200rpm drive if mine turns out to be 5400rpm, but JakeGould has made it clear that RPM alone is not ...
0
votes
0answers
13 views

Controlling I/O Intesity for a JOB with FIO

I am trying to create a workload profile for a performance evaluation using FIO[1]. This workload profile is based on those presented in the SPC1 specification published by the Storage Performance ...
0
votes
0answers
30 views

VMWare Workstation split vs monolithic disk

After some reading of what's available on the internet it seems that all sources state that monolithic disks are faster, and the only advantage of split disk is portability/compatibility with file ...
0
votes
0answers
29 views

How to troubleshoot cyclically slow SSD writes (it's like a sine wave)

I recently built a machine from some older parts, including an Intel 80gb SSD and 5400 rpm hard drive. I installed Windows 10 Technical Preview and have observed decent performance overall, but when ...
0
votes
0answers
31 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 ...
2
votes
4answers
196 views

How to debug a problematic word document

I realize that there are tons of questions with similar symptoms, but I checked most of them and could not find an answer. My system setup is as follows; nothing special running in the background: ...
-3
votes
1answer
73 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
votes
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
votes
0answers
36 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
votes
1answer
36 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
votes
1answer
68 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
votes
1answer
23 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
votes
1answer
49 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
vote
0answers
52 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 ...
0
votes
0answers
73 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
votes
1answer
25 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
votes
0answers
36 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
votes
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
40 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
votes
0answers
39 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
votes
2answers
125 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 ...
2
votes
1answer
145 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
147 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
votes
1answer
46 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 ...