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

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Assessing Performance in Process Explorer: Varying Block Sizes

I am trying to assess the performance of my scientific software using Process Explorer, with the files both locally on our blade server (Dell VRTx, Windows Server 2012) and over the network from ...
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1answer
29 views

Running Windows 7 on weak hardware [duplicate]

I have a PC machine with a Pentium 4 and 2GB RAM. Windows 7 is installed, but it runs very slowly. Installation of Windows XP is not suitable as I need to use some software that works only on ...
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1answer
16 views

Why is my hard drive slowing down halfway through a read/write benchmark?

I'm using gnome-disks to do a benchmark on an old 5400RPM Hitachi HDD that I pulled from a PS3. It's connected to my computer through an external USB 3.0 enclosure. Here's the output graph from the ...
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0answers
24 views

Adding more RAM to Gigabyte GA-P35-DS4 rev. 1.0 makes it extremely slow

Summary: Using the motherboard mentioned at the title, adding the DDR2 modules (from 4 GB to 8 GB) caused extreme slowdown. Memtest86+ reveals that probably reading the upper 512 MB works, but is ...
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1answer
23 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 ...
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2answers
61 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 ...
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0answers
15 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 ...
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1answer
27 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 ...
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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 ...
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0answers
40 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 ...
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1answer
16 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 ...
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1answer
80 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 ...
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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 ...
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1answer
79 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 ...
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1answer
46 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 ...
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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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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 ...
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1answer
58 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. ...
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2answers
39 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 ...
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3answers
37 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, ...
2
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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 ...
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1answer
9 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 ...
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1answer
23 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 ...
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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 ...
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2answers
71 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 ...
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0answers
24 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 ...
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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 ...
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1answer
21 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 ...
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0answers
36 views

What is Prime95 benchmarking?

I've recently had to benchmark the CPU performance of a variety of operating systems on identical machines. I've been using the 'benchmark' functionality of Prime95 to obtain a consistent test. I've ...
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1answer
29 views

How crucial is CPU clock speed/frequency in software performance? [closed]

People say that when you aren't getting the best performance, overclock your CPU. On the other hand, clock speed doesn't improve microarchitecture, and speed without efficiency is not truly as fast as ...
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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 ...
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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 ...
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2answers
51 views

Periodic FPS drops in games, regardless of graphis card

When I play recent 3D games (Battlefield 3 & 4, Tomb Raider, Saints Row 3 & 4, etc.) I experience periodic FPS drops, e.g. in Battlefield 3 from the average of around 70-80 fps to 20-30 fps; ...
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1answer
24 views

Experiencing lag during games despite meeting system requirements..help please

Here are my computer specs Mainboard: ASRock M3N78D CPU: AMD Phenom II X4 960T Video card: GTX 560 RAM: 4G Hard Disk: Samsung HD501LJ XCOM Enemy Within recommended requirements CPU: Core 2 Quad ...
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0answers
78 views

HP 15-r007tx running too slow

Just two days before I bought HP 15-r007tx notebook. It came with free DOS os. I installed windows 8.1 pro in it. From the first use after installing windows 8, it's running slow with very slow ...
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0answers
24 views

iTerm2 performance vs Terminal.app

I prefer iTerm2 for its features, but Terminal.app outperforms it in terms of responsiveness. I mostly notice this in Vim: iTerm gets choppy during scrolling and/or rapid cursor movement. Is there ...
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0answers
29 views

Two harddisks compared in performance/speed

I've placed a new harddisk in my laptop and did some performance tests with 'CristalDiskMark'. Here are the results: First harddisk with Windows 8.1 on C partition: And the second: So overall ...
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1answer
34 views

Harddisk standard differences

I've added a new hard-disk to my laptop today. Now i wanted to compare the information available over the harddisk. So installed a tool called 'CristalDiskInfo'. A property from the information called ...
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1answer
35 views

Understanding the differences between different Intel processors

I'm looking at buying a new laptop PC (my old one is failing). I noticed the latest CPU clock speeds are lower than my current one though the CPUs are newer. It used to be that a higher clock speed ...
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2answers
50 views

Windows 7 slower than death. Dell Inspiron 17 R 3521

I have windows 7 on my Dell Inspiron 17R 3521 The laptop came with Windows 8 as the default software and naturally enough (my opinion) I hated it. So I installed windows 7 dual boot with ubuntu 14.04 ...
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1answer
39 views

Outlook synchronize feature extremely slow

My Outlook synchronization function takes a very long time (>5 minutes). This delays features to the point of rendering Outlook not useful: New mail not pulled from server Search functionality hangs ...
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0answers
59 views

MIcro SD card gets slower after partial fullfillment

I have a micro SD card from Kingston - 32GB class 10 When i'm writing on it using usb card reader or my phone, average write speed is about 6MB/s But after about 10GB of data written into it, ...
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2answers
90 views

When to use high performance plan and balanced power plan?

I have an SSD, a Samsung Evo 250 GB, and when I configured it with Samsung Magician, this one created a new power plan called Samsung high performance. Until now I've been using this power plan. Now ...
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0answers
35 views

Can anyone assist me in determining why my ssds are running so slowly please?

I have an MSI GT 680 Gaming laptop that I use for data analysis work. History: Originally I had a pair of 128GB Kingston Hyper X SSDs in the system in RAID 0. I put these in place (when I bought the ...
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0answers
13 views

Windows software raid0 giving bad performance

I have two Samsung SSD's in RAID0 mode. I measured their sequential read/write speeds first in RAID0 Hardware and they give around 1000 mbps but then I used two disks in RAID0 software from within ...
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1answer
38 views

Does SSD have any effect on overclocking?

Hi i just had a query in my mind- Do i really need to add SSD to OC ...I mean does it make any difference on the perfomance of the processor ? I would like to overclock my i7 and i have already spend ...
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1answer
35 views

Extremely slow download speed but reletively good downstream

I am having severe internet issues with no particular cause (that I can find). My average download speed was around 8Mbps on ADSL2+ during peak hours (I live in Australia without NBN) and I was ...
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0answers
27 views

Unexpected overclock frequencies and temperature fluctuations

I have a HP Pavillion dv6-6123cl Entertainment PC with a locked bios. I use a program called K10Stat in order to get around this and overclock anyway. I have AMD A6-3400 APU with Radeon(tm) HD ...
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1answer
30 views

Will Diskpart Clean All reduce HDD lifespan?

I am planning to reinstall Windows on my PC and I just want everything to be as fresh and new like when it is first used. I thought about doing a Clean All on my hard disk, but I have one question: ...
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3answers
106 views

Slow Hard Drive

My WD Elements 1TB hard drive has suddenly became very slow, I cant copy from it or watch anything from it without it playing and pausing the whole time. It is not full there is still over 200gigs ...