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

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35 views

The Power Supply can influence in performance?

I bought a new computer, I have a core i5 4690, 16gb ram hyper-x, 120 gb SSD + 500Gb HDD and a Radeon R7 360 2gb, the only thing that is not new in my computer is the power supply, a 500W "Wise Case" ...
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79 views

Windows 10 is ignoring my pagefile settings

Is there a way to make Windows follow my pagefile settings? I really don't want the pagefile on D; I'd rather have it disabled if there's no way to force it to be on C instead.
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150 views

VirtualBox Win7 Windows Update unusably slow

Problem: 190 Important windows updates take ~10hours to install, then fail, then take ~10 hours to roll back. Tried 3x. Now I'm doing 10 updates at a time, about 2.5hours each set. Environment: Win7 ...
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170 views

Windows 10 100% Disk usage with less that 15 MB/s

I have the Lenovo Y70-70. 4th gen i7, nvida gtx 960, 16 GB RAM, and a 1tb hybrid drive, so I know it can be faster. The problem is that the Disk usage regularly maxes out, and makes the computer lag. ...
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49 views

Zero cpu usage in task manager with 45-50% memory usage

I hope someone can help shed some light on this for me, I have an Asus X54H laptop running Windows 7 home that has been getting to be a little sluggish as of late. I checked the task manager to see ...
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95 views

R memory leak issue loading large dataset

I all, I have an issue with memory usage in R. I do not really undertand how R manage the memory. As long as the datasets were small it was not a problem but with a 1 GB file loaded in the RAM a leak ...
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47 views

Transferring over network gradually slows down

I have a spare Windows 10 computer sitting around and I turned it into a file storage computer. My computer is running Windows 7. When I transfer a 1.5GB file from my pc to my server, it goes from ...
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83 views

Would a log-structured file system on a SSD/HD mirror improve (write) performance and reliability in a virtualization environment?

I'm planning to get new Notebook as a host for several virtual machines. The host shall get a SSD drive for the sake of speed. However, I'm a bit concerned about the reliability of SSD drives for this ...
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40 views

Consistently high disk usage hinders performance

I have a Asus quad-core Laptop running windows8.1, and it has high disk usage, for the entire time it is running. Its not like its doing anything, (that I know about) Just 100% disk usage, all the ...
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12 views

Does preview pane in windows 7 downgrade performance

I like to use the preview pane when I'm sorting through and filing a lot of documents because it's a quicker way to view contents than openning the file in whatever program. But my IT head keeps ...
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33 views

Profiling hard drive access

I'm running Linux (elementary OS) on a notebook. The notebook has two hard drives: a 32GB SSD drive which is reasonably fast, and a 1TB mechanical drive which is really really slow. I'm playing a game ...
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34 views

Page-file performance comparison ?

Is there any way to compare difference in performance between different drives, page-file settings (single/multiple page-files, page-file size, automatic size or not) ? I mean in real world scenario. ...
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75 views

CPU and Memory Running Well Below Set Clock Speed

The last time I used my PC was December 30th, and it worked perfectly. I turned it off, went out of town for a week, and when I returned, I turned it on to discover that my CPU and memory were running ...
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34 views

Why is my Mac Mini slowing down? (HD, processor, memory, network, are all fine)

I have a late 2012 Mac Mini with 16GBs of RAM (of which I use maybe 4 GBs), a 1 TB HD that is not even half full (and which I have verified to be working according to more than one method). The ...
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45 views

QoS does not cause lag in multiplayer gaming?

I was doing some testing with QoS on my internet last night (Quality of service was done using DD-WRT on a linksys router). My internet is normally 25 MB/s, which I can game fine without lag. I used ...
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21 views

Isn't overall cache miss time more than direct ram access time

Suppose there is a computer with three cache's L1,L2(inside the processor) and L3(external to the cpu) and a RAM. Now suppose CPU need to access data "ABC" for some operation which is definitely ...
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11 views

Do application cache/config files benefit significantly on an SSD?

Applications should be installed on an SSD to take advantage of the performance advantage it has over HDDs. However, do cache and config/settings files in the User folder on Windows and the /home ...
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53 views

Adobe Premiere and Media Encoder randomly can't encode video

I have a mid-range computer setup which I use to do a lot of video editing and 3D rendering. Usually, it works fine, although I can't do 3D rendering (using Blender) on the GPU because there isn't ...
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21 views

On running an OS in an external HDD (SATA-to-USB3) on a Macintosh laptop for nostalgic-gaming

TLDR; What significant performance difference would there be if I run an OS (say, Windows) in an external HDD through USB3 (a SATA-to-USB3 connection), comparing to running it natively, on a ...
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38 views

SSD + HDD Setup - Occasional slow HDD access?

My PC setup is currently using a small SSD (~75gb) for storing my OS and small, frequently used software. The rest of my software and data is stored on an HDD (~1TB). Here's the issue; because most of ...
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33 views

SSD performance after dual-boot installation

I have an ASUS K501L laptop, very decent rig with 128 GB SSD and 1 TB HDD. I want to install Kali Linux as a second OS to boot to WITHOUT deleting my Windows 10 OS that already comes installed with ...
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42 views

Can I create performance counters, keep them running and periodically see the data without stopping the counter?

It might be quite a stupid question, but I seem to be unable to solve some simple monitoring need: A machine has a performance counter setup (those perfmon.exe thing from windows) that logs ...
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91 views

Ways of significantly speeding up Windows 10 loading on a modern low-performance PC?

I have a compact PC with the following specs: Intel Z3736F CPU (dual-core with HT); Integrated GPU 2GB DDR3 RAM 64 GB integrated solid-state memory (chips are soldered on the main board, not ...
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30 views

How to trobleshoot AwesomeWM performance?

I use heavily Awesome WM on Xubuntu. When I say heavily, I mean: multi display 4k display lot of applications lot of virtual windows (tags) lot of personalization of AwesomeWM (custom rc.lua and ...
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29 views

How do I check which element of my LAN is causing my upload speeds to be incredibly slow?

I have a Buffalo NAS 520 running via wifi attached to a Sky router (144Mbps and 2.4GHz) I'm attempting to upload via my home network but am getting speeds of 0.69 Mbps and the download speed is 6....
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37 views

Why do these benchmarks NOT saturate the CPU.

I ran two trivial benchmarks in Powershell and C. I ran this on reasonably well endowed i7-2600 with 16 Gig Win 7 Pro. Both ran using two of the 8 cores (really 4 cores dual hyper threaded) and ran ...
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54 views

Any 'Server mode' for El Captain

We have a virtual machine on vSphere with OS X El Captain installed, which serves as CI server (runs Jenkins instance for building apps we develop). However, virtual machine looks to be about low-...
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64 views

hyper-v problems on windows 8.1 and server 2012 r2

it's complicated and grows every minute. last day my os was windows 8.1 pro x64 and virtualized windows 8.1 pro x86 with hyper-v. it was really fast, reliable, okay; except vgpu. vgpu is remotefx on ...
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48 views

Remote desktop slows down over time Win 10 to Win 7 but reconnecting makes normal again

EDIT Dec 2, 2015 - corrected question to state that it's Win 10 to Win 7, not Win 7 to Win 7. When using remote desktop to connect from a Windows 10 computer to a Windows 7 computer, the speed of ...
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44 views

Write times for large files on NTFS

I am trying to benchmark the performance of sequential writes (I know that writes are buffered, but that doesn't matter for the scope of my experiment - I'm not looking to measure raw disk speed) on ...
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6 views

Oracle RR math instruction length cut offs? Expert needed

Machine cycles for Oracle Math considering Oracle data type and lengths for the top compilers where are the step thresholds when varying length? Example Answer Well Dave Oracle 10g compiled on a 64 ...
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67 views

How to analyse disk performance issues visible in Windows Resource Monitor?

I'm using Windows Resource Monitor and I observe poor response times of >250ms. I know which application is ultimately requesting the files, but the disk access is monitored under the System process. ...
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42 views

Is there a performance improvement when considering partition size during HDD partition?

I am having a 320GB (298GB usable) HDD. I want to partition it. Generally, Is there a recommended fixed size for partitioning so as to get more performance? Like in what case will the performance ...
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74 views

Deleting a folder with huge number of subfolders is very slow in Windows

I have a hierarchy of folders (millions of them) and I want to delete the parent node. It's OK and it gets deleted. My CPU usage becomes 100% on all logical cores, but the memory doesn't complain and ...
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15 views

Samsung 530U4E ultrabook ultraslow

I have a 530U4E samsung ultrabook but this computer is desperately slow. Every application I launch takes sometimes incredible amounts of time (firefox needed a minute to launch) I recently upgraded ...
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24 views

Benchmarking a process to run on another server

I am not too sure if there's a simple answer to this. At the moment, I have a Linux process. I can monitor this process like any other and see it's CPU/Memory utilisation. How would I be able to ...
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171 views

Chrome scrolling stutters on Macbook Pro 13 (2015) and doesn't on old iMac 2011

I have an iMac from 2011 with AMD Radeon HD 6770M 512 MB and I just bought a new Macbook Pro (early 2015) with Intel Iris Graphics 6100 1536 MB. I enter the same page on both computers on Chrome and ...
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43 views

Lightweight OS for Acer 5532

I have this old laptop with the following specification: Processor: 1.6GHz AMD Athlon 64 TF-20 Ram : 3GB DDR2 SDRAM 800MHz Storage : 160GB at 5,400rpm Graphics : ATI Mobility Radeon HD 3200 ...
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50 views

Read Speed 50% Slower Than Expected

have an issue with our internal network that I’ve been trying to troubleshoot for the past two days with no luck, wondering if I can get any answers or ideas that we haven’t thought of yet. We have a ...
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18 views

What programs are most affected by slow write speeds?

I'm specifically referring to "power user" programs that will be slowed significantly or crash as a result of slow write speeds. I will most likely make use of Serato DJ, Adobe Illustrator, XCode, ...
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47 views

Hard drive usage very high all the time

I have a problem with very high hard drive usage. Computer of my colleague (Sony VAIO) was working very slowly, it had Windows 10 Technical Preview, so I had to reinstall system. I installed Windows 8 ...
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90 views

2 Separate servers running Windows Server 2012-R2 are suddenly very slow

Alright, so this problem has me stumped. We occasionally provide remote assistance to some of our customers, most often using Team Viewer. Yesterday morning, one of our customers reported that our ...
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50 views

What does “losing a second of transactions” mean in MySQL?

Setup: Homeserver with Owncloud using MySQL as database. Problem: I/O on server HDD slows sync down to several days per 70k small files. Solution: ...or at least a workaround that I found is to ...
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44 views

How to tell how much swap a Windows process actually uses?

In Windows 8.1 x64, I'm running a VBox machine that is configued to use 5200MB RAM. The host OS has 16GB of RAM, however often the other open programs add up and fill up the memory. My theory is that ...
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138 views

Slow Speeds over Wi-Fi

I have cable Internet that averages about 35 MB/sec down and 7MB/sec up, but been having intermittent Wi-Fi problems for several months now. I’ve changed my router a couple times to no avail. I’m ...
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28 views

Is NBTI CPU aging, and how does it affect a PC under normal conditions?

There was a question here on SU, if a CPU can age: Is the performance of a CPU affected as it ages? the answer in short No I read a newspaper article (unfortunately in German) referencing a research ...
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68 views

Homedir via NFS: How to improve performance?

I would like to improve the login speed on my NFS clients. Just logging in via lightdm and starting KDE takes approx 35 seconds. Could be somewhat faster, no? One option would be to improve NFS ...
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196 views

Will using the dedicated graphics card improve performance?

I have a HP 1000-1205TX Notebook PC which has a Intel® Core™ i3-2328M Processor and AMD Radeon HD 7450M (1 GB DDR3 dedicated) graphics card. The processor also has integrated graphics. I am running ...
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28 views

Single Hypervisor storage deduplication using a filer VM : performances

I'm looking forward to use a dedicated server as an hypervisor using VMware ESXi, and I would like to find a way to have storage deduplication and save some disk space. The idea would be to create a ...
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47 views

Browsers Causing CPU Thrashing

Whether I use Chrome or IE my CPU starts to go crazy. I'm not sure what kind of web content causes this. Streaming? I have a fresh install of Windows 7 x64 and I'm using IE 11 and Chrome 45.0....