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

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0
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1answer
22 views

What is the proper way to debug a slow internet connection?

I turn to super users for their best tips. Consider the following scenarios: A large house with many roommates with many devices and no way to tell which one is the issue Skype choppy, youtube ...
0
votes
3answers
49 views

Stop or pause Windows startup programs during boot?

This is not a duplicated question. This question is about stopping or pausing the current startup list at any time rather than bypassing it. Is there an application or program that can stop or pause ...
2
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2answers
5k views

Webpages open PAINFULLY slow in Internet Explorer on Windows 7

I have a computer with Windows 7. Web pages open fine in Firefox, but in Internet Explorer, they open painfully slow... They'll load most of the page, but then hang up on something. I have no idea how ...
1
vote
1answer
138 views

xperf profile services

When I profile using xperf there are always cases when I see, that, say svhost(1552) "eating resources". I could then go to ProcessExplorer and see that svhost(1552) running like 10 services. How to ...
1
vote
1answer
31 views

How can I read the time metric for a product step using xperf

I have Windows Performance Kit installed on my Win7 machine [xperf.exe version is 4.8]. I am basically trying to measure the time taken to perform a specific set of steps on my s/w application ...
0
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0answers
40 views

MacBook Air, Mavericks: 2.9GB of RAM is used at startup

Running: MacBook Air Late 2010, 13 in, 4gb RAM. Only 8gb free on SSD Immediately after booting, I opened activity monitor and this is what I saw: About 2.9GB of RAM already used up, and a list of ...
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0answers
13 views

How to tell if your graphics card is functioning optimally?

My laptop is a couple of years old. It's a mid-range multimedia rig: Intel i7 2.2Ghz (2670QM allegedly), 16GB RAM and a GT 635M 2GB graphics card. I do a fair amount of gaming as well as multimedia ...
1
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0answers
37 views

Hard drive working in 5 second pulses?

Bit of an odd issue with a laptop (Toshiba C660D 181). For most of the time, the hard drive seems to operating in 5 second pulses. The laptop doesn't have a HDD light and the HDD itself is very ...
1
vote
1answer
15 views

Can an xperf trace contain passwords?

I recorded an xperf trace. Can the trace contain passwords? (assuming that paths contain no password) I see that upon hitting xperf -stop I have the following warning: The trace you have just ...
2
votes
4answers
6k views

Is my Graphics Card slowing the entire system down?

OK, so I have just put together a new machine, using all new shiney parts except my graphics card, which I thought would be man enough given that I'm not using this a gaming machine at all. The ...
1
vote
1answer
26 views

Is an operating system responsible to making the best use of system resources?

Suppose I have a powerful desktop PC with a high performance CPU and GPU. Does my OS decide how it should use these resources? Can there be any notable differences between different operating systems ...
0
votes
1answer
66 views

Windows 8.1 100% disk usage

Sorry to make another one of these posts, but I've dug through at least a dozen other threads and no other solution has worked for me. My problem also seems to be slightly different. As you can ...
0
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0answers
19 views

Slow writes when writing to a file outside the current working directory

I'm baffled at the results of an experiment I performed on my Windows laptop. My app writes a huge binary file (~3.5 GB) and I noticed that if the file that I write is outside the current working ...
4
votes
1answer
3k views

VMware Fusion performance degrading after few hours

I've been having an issue with VMware Fusion for some time now, where the VM (running Windows) runs fine initially, but will slow down to a grind after some time (best guess is a couple of hours). ...
0
votes
3answers
145 views

CPU usage 99% constantly

My computer is running windows 8, and suddenly started running slowly. When I open the task manager, it tells me that the CPU is using 99% - sometimes the disk usages jumps up as well. The strange ...
8
votes
2answers
1k views

Why does unequal amounts of RAM in each slot decrease performance?

This page describes the RAM specifications for many of the MacBook laptops. In the section for my laptop (13" Pro Late 2011), it says: Additional Notes: For best performance, fill both memory ...
0
votes
1answer
67 views

Windows 8.1 - HDD spinning at 100% even though no read/write

I have an HP Laptop (Core i5, 8GB RAM, 320GB HDD) running Windows 8.1 (x64), that recently got the Sality.AU Virus. The OS had only just been installed, and a friend downloaded the drivers and put ...
4
votes
3answers
3k views

Why does my general frame rate slow down to 40fps randomly?

This has been bugging me for a while. Every once in a while, I find my computer to be sort of laggy and I thought it was because it was busy or something. However, I recently noticed that it wasn't ...
9
votes
1answer
1k views

Why can Vim open large files faster than some other text editors?

When opening large log files (well, not that large, but 80mb is still a lot of text!), I've always used Vim since it loads them almost instantly. Other text editors like Notepad, Notepad++, etc will ...
1
vote
2answers
127 views

CPU and HD degradation on sourced based Linux distribution

I was wondering for a long time if source based Linux distributions, like Gentoo or Funtoo are "destroying" your system faster than binary ones (like Fedora or Debian). I'm talking about CPU and hard ...
0
votes
1answer
12 views

Which one of the private set, working set and virtual memory has a higher impact on system performance?

Amongst an application private bytes, working set, and virtual memory, which one has the highest impact on system performance? To be more clear, consider EsetNod32 antivirus. If you look at Task ...
2
votes
0answers
744 views

Buffalo Router WZR-HP-G450H slow and unstable

I bought a Buffalo WZR-HP-G450H router. Problem 8 device connected to it via wireless. When power it on, the connection speed is very fast, about 5MB/s while transfer files between a wired server ...
1
vote
1answer
45 views

What is the difference between Hardware reserve Standby and Free memory and how is it possible that my PC works slower on all available 13K RAM

My PC is slower now with Standby memory 13K+ than when I used 8K Hardware reserved (it was then much faster) Why is this? What is the difference between Hardware reserve Standby and Free memory? I ...
1
vote
2answers
37 views

Moving Files Slow Even With SSD

I 'upgraded' to a Samsung 840 Evo SSD drive, and whilst moving some files around on my drive, its slowed to a crawl. Heres a video example: http://screencast-o-matic.com/watch/c26DiTej3e My machine ...
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votes
2answers
37 views

Which has faster read/write speeds an external hdd raid or external single ssd

I want to move data to an external hard drive AS FAST AS POSSIBLE and I was wondering whether it would be better to have 2 HDD (7200 rpm or higher 500GB each) in an enclosure running RAID 0 or a ...
0
votes
1answer
21 views

Disabled programs at Startup - broke my computer

So my Vista laptop is painfully slow. It's about 5 years old now, a Toshiba satellite with Vista Home Premium. It's due for a clean up. I can't afford a new laptop, so I run all my adobe programs ...
0
votes
3answers
35 views

PC slow when creating folders, displaying file open/save dialog

I've noticed my trusty Windows 7 PC seems to be getting sluggish, but in quite specific ways only. When I am using a specific program it is responsive and works fine. But more and more frequently, ...
0
votes
1answer
53 views

What impact do system components (VRAM/RAM, GPU, etc.) have on gaming performance?

I get that RAM in general is just another form of memory (a sequence of bytes) to store some information. So to be more precise, I assume at the hardware level at least, VRAM and RAM are the same. ...
0
votes
1answer
103 views

Why is Firefox Using 2 Gigabytes of RAM?

I have version 26.0. Firefox uses 2 gigabytes of RAM minimum with only one tab open. I've tried uninstalling add-ons, disabling plug-ins, everything, but nothing helps. What do I do?
2
votes
1answer
30 views

Windows: Wide Variation in Read Performance

I'm new when it comes to measuring i/o performance. I found a tool called HDTune Pro, which according PCWorld is a good tool for i/o benchmarking. This tool attempted to read 40GB, on the first ...
10
votes
4answers
8k views

Quickest way to merge snapshots in VirtualBox?

I have vdi with quite a number of snapshots taken from it - say, 50 or 70 snapshots. I want to have one plain vdi with a current state. These snapshots take way too much disk space and are not needed ...
33
votes
8answers
36k views

Does Windows ReadyBoost have a meaningful impact on performance?

Does Windows ReadyBoost technology, available in Windows since Vista, have a meaningful impact on performance? Are there well-known benchmarks that compare systems with, and without? Does the speed ...
2
votes
1answer
3k views

BootCKCL.etl file size & Session “Circular Kernel Context Logger” stopped due to the following error: 0xC0000188

I have a few regular / re-occurring errors in my event viewer which seem to be linked to logging upon boot and shutdown. I am running Windows 8 x64 professional. Event ID 4: The maximum file ...
2
votes
1answer
311 views

“appleeventsd” slows down Word + EndNote

I'm writing my doctoral thesis on a Macbook pro using MS Word 2011 and Endnote X6 (Mac Word and Endnote on the newest version). Word responses really slowly to any input like typing or scrolling, with ...
1
vote
1answer
8 views

How can I debug IOZONE over the network?

I'm working on a mac and I have a vm running ubuntu server. I created a file vm_client.iozone that looks like: vm /path/to/test /usr/bin/iozone I have configured iozone to work over ssh using ...
-1
votes
1answer
1k views

How can I achieve maximum sustained sequential disk write performance?

I need data write rates of ~1 GB/sec sustained for ~1 hour. Data is coming in over this PCIe x4 frame grabber. I need to stream its full bandwidth to disk. I don't have experience with RAID, but as ...
3
votes
2answers
543 views

Optimum Swappiness for a Linux System

I have a 64-Bit Linux PC with 4 GB of RAM. How can I find the optimum value of swappiness (/proc/sys/vm/swappiness) to be set? The default is 60 and I don't think it works best for everyone. I am ...
0
votes
1answer
22 views

Most-playback-performance video-file-format?

I have lots of MP4 MKV MOV files of various lengths, resolutions, audio formats, audio and image quality.What should I convert them to to have most playback performance without quality loss? My ...
1
vote
2answers
70 views

hard drive - How type of I/O access influences access time?

I am trying to better understand how the type of I/O access influences the access time. Can a conventional HDD perform both random and sequential access ? If so why would you want to keep provisions ...
0
votes
0answers
21 views

If the desktop under a certain user becomes slow, how to improve performance?

I am using Arch Linux, and the default username has become slow and unresponsive over time. I created a new user to see it was fast and as good as new. I don't want to delete the default user, as a ...
1
vote
2answers
40 views

How to prevent explorer.exe to get laggy when some network paths are not available?

I have set up some network path in Windows 8.1 which can only be accessed when I'm connected to a VPN. I don't want to re-map/add them every time when I connect to the VPN (I do this quite often). If ...
0
votes
0answers
23 views

Tableau slow connection to data source

We are having continued problems with our Tableau Servers... We have two servers tableau1 & tableau2 tableau1 is a proof of concept on a slow pc acting as a server. tableau2 is a server managed ...
0
votes
0answers
12 views

How does collectl summarize its numbers?

I'm analyzing the processor usage of a system over the course of 24 hours. I have collectl set to record sysT and usrT every five seconds, but for some long-running processes this results in thousands ...
7
votes
3answers
5k views

When should I activate the “launch folder windows in a separate process” option?

In folder options -> view, there's an option that's off by default called "Launch folder windows in a separate process". I'm on windows-7, but I know this capability has existed since at least windows ...
0
votes
1answer
20 views

Raid0 Test For Multiple Partitions On A Single Drive Gave Better Sequential Write Speeds That Expected

Obviously running raid0 on partitions of a single drive will result in a performance decrease; data has to be written/read multiple times to/from the same drive, and because of how it's spread the ...
2
votes
2answers
123 views

Slow vmware vm with fast brand new laptop

I've just bought a fast core i7 laptop with 16GB of RAM running Windows 8.1. When I run a VMware VM on this computer, the VM is extremely slow. And if I look at the host HD activity during this time, ...
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0answers
281 views

How do I remove 1,000,000 directories? [duplicate]

Possible Duplicate: Quickest way to delete big folders in Windows? I found that in a directory more than 1,000,000 subdirectories has been created due to a bug. I want to remove all ...
2
votes
4answers
7k views

MacBook freezes, console printing kernel: disk0s2 I/O error

Yesterday I've closed my MacBook , opened it today and experienced horrible performance slowdown, beach ball and eventually a freeze. After several reboots I managed to close most of my applications ...
0
votes
3answers
9k views

What can I do to make my VPN connection faster?

I am using hideman as my VPN, however I found that my internet browsing speed was significantly degraded when I was using VPN. I used speedtest.net without VPN and I got 5Mbps, and when connected to ...
2
votes
4answers
3k views

How to speed up the ftp upload process?

So why are FTP uploads soo slow? I am using filezila as a client. I have like 10 mb in 1000 files and I can upload each individual file with 300-500kb/s yet the whole upload is incredibily slow due ...