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

learn more… | top users | synonyms (3)

0
votes
1answer
36 views

Can My ISP's Assigning me a New IP Explain Poor Performance on my Home Network?

I have observed numerous times that poor performance on my home network, which is infrequent and characterized by slow transfer rates (especially over wireless), is resolved by rebooting the router. ...
1
vote
0answers
132 views

How to achieve best browsing performance using Polipo?

I'm using Polipo to browse the web, I've set up the config file as follow (consider that I have 4 Gb of DDR3 ram, and my computer is quite fast): I've noticed that seems better if I disable the ...
2
votes
2answers
101 views

Could slowness/sluggishness at startup on a new MacBook be a hardware issue?

Symptom 1: After selecting region, the OS setup UI froze, I’ve researched, went back (took some time for UI to respond, like minutes), and continued setup, no slowness after that point (might have ...
0
votes
0answers
30 views

New Windows 7 workstation shows KSOD and extreme sluggishness; what gives?

I have been setting up a Windows 7 workstation: 4 GB RAM 1 TB SATA hard disk Core2 Duo CPU Intel GPU of quite recent make Windows 7 SP1 64-bit About 1/3 of the times it boots up, it never reaches ...
0
votes
0answers
34 views

100s of Reads vs 100s of Writes

Consider a pretty fast Hard Disk. I know many writes to a single disk will always be slower than many reads. For instance time taken to complete 100 write operations is much longer than time to ...
1
vote
1answer
267 views

Ubuntu Server 14.04 in VirtualBox: disk performance drops with more than 1 CPU

I'm running VirtualBox 4.3.18 on OSX 10.9.5 . I install Ubuntu Server 14.04 64bit and performed this basic disk write test: dd if=/dev/zero of=bigfile bs=1024 count=5000000 Setup of host (MacBook ...
0
votes
0answers
83 views

How to increase I/O priority of a zpool scrub (at runtime/without reboot)?

The speed of the scrub is not exceeding 5 MB/s for the first half hour (according to zpool status 2. The pool reaches 140 MB/s maximal and 50 MB/s for > 30 minutes. Watching iotop I see that txg_sync ...
-1
votes
1answer
102 views

Memory cards for tablets [closed]

I want to learn more about the terminology used in association with high-quality memory cards. For example, Class 10 is the fastest class available. Above this, UHS-1 makes it even faster. In ...
0
votes
4answers
797 views

How come my 7200 rpm external HD is slower than my 5400 rpm portable HD?

I have been reading and writing the same files on two external hard drives connected to the same computer, a 2011 MacBook Pro. I was expecting the 7200-rpm EHD to be faster than my 5400-rpm EHD, but ...
1
vote
2answers
419 views

Assuming a PC has plenty of RAM, will an ssd make web browsing significantly faster? [closed]

Assuming a PC has plenty of RAM (as many cheap laptops with HDDs do), will an SSD make web browsing significantly faster? Is an SSD a worthwhile investment for someone who's in google docs and gmail ...
0
votes
1answer
185 views

How do I optimize Windows disk I/O for high-latency throughput?

Let's say there are 25 processes each which want to read and index a large (say, 1GB) file. The hard drive may be capable of ~100MB/sec throughput, but the head movement and rotational latency ...
182
votes
10answers
32k views

Is there still a reason to choose a 10,000 RPM hard drive over an SSD?

For anyone who's serious about storage performance, SSDs are always the fastest solution. However, WD still makes their 10,000 RPM VelociRaptor hard drives, and a few enthusiasts even use ...
2
votes
1answer
37 views

Why does a CPU with lower frequency score better than one with more?

I've just seen this comparison of two differenc CPUs. The first one has 4.4GHz and the other one 2.5 to 3.5GHz. However, the one with the lower frequency scored better in the single-thread-rating ...
0
votes
1answer
53 views

Testing new (refurbished) SSD

I got a Corsair Force GS 128GB, and popped it into the "dock" integral to the case. It's a SATA connector going to one of the motherboard headers, like any other internal drive. After initial ...
0
votes
0answers
62 views

Improvement of transfer speed over afp shares

I was performing speed tests on my upgraded network, and i'm not getting all the speed i thought i could get across network shares. The tests i did between machines A and B (both running OSX Yosemite, ...
0
votes
0answers
15 views

Slow computer. Used to be fast [duplicate]

Ok guys my last question was flagged so I will try to be more specific. I bought a computer 3 years ago that a friend of the family built for me. He seems to know what he is doing so he built it ...
-1
votes
1answer
524 views

4-bay NAS write performance RAID 5 + SSD vs RAID 10

I am planning on buying a new NAS (QNAP TS-453 Pro) for my Home Office. The NAS has 4 HDD bays and supports SSD Caching. Hence, I was wondering which setup would probably be faster in terms of write ...
0
votes
0answers
167 views

Samsung laptop slowed down

I have a notebook NP550P5C from Samsung. It has impressive parameters: 8 GB RAM Intel i7 3610QM @ 2,3 GHz 904 GB HDD with 8 GB SSD It runs Windows 8.1 64bit. It used to be very fast but after 22 ...
1
vote
0answers
42 views

Windows 7, Hibernation Disaster [closed]

I think that I messed up my lap top after accidentally putting it into hibernation. I was at school and at the end of class I was putting my computer into sleep mode. Unfortunately I accidentally ...
3
votes
1answer
135 views

Why is my GPU not being fully utilized?

I happen to have two identical X201 Lenovo laptops, both with Windows 7 installed, latest drivers, etc. However, only one manages to run 3D computer games with decent performance. I have gone ...
0
votes
1answer
238 views

Why is the i7-5960x only 3.0Ghz, while the i7-5930k is 3.5Ghz?

Why is the i7-5960x only 3.0Ghz, while the i7-5930k is 3.5Ghz? I was really looking forward to the 8-core intel i7, until I saw the stock clock speed was lower than it's 6-core counter part. Is there ...
0
votes
0answers
175 views

USB 3.0 flash drive has slow performance after reformatting

I bought a USB 3 flash drive, and after a few weeks of using it (happily), I needed a bootable linux and that was the only thing handy. So I reformatted it and worked through all that jazz. But I'm ...
0
votes
0answers
36 views

Sudden sluggish performance of ubuntu system

since 3 days a very important system at my workplace started a most peculiar behavior. There is no internet connection on that PC and no updates have been made. When I started the PC 3 days ago after ...
0
votes
0answers
35 views

Processor never reaching maximum frequency

I have an Intel i7-3630QM which, according to both the adverts and /proc/cpuinfo, can go up to 2.40GHz per core. I ran cpufreq-set -g performance cpufreq-set -f 2400000000 And I'm running a ...
2
votes
1answer
141 views

Standard account in Windows 8 takes too much time to reach metro screen

I have a Windows 8 system in which there is an admin and a standard account. The admin account will take only 10-20 seconds to reach the metro screen during startup. While the standard account takes ...
3
votes
2answers
31k views

Service Host: Local system (network restricted) is thrashing hard disk

I am having windows 8.1 with update 1 installed and all release updates of windows till the date i am posting this questions. System is laptop, Core i3 with 6 GB RAM and 500GB hard disk. When ever i ...
1
vote
0answers
22 views

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 ...
-5
votes
1answer
38 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 ...
0
votes
1answer
76 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 ...
-2
votes
1answer
173 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 ...
0
votes
1answer
91 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 ...
1
vote
2answers
110 views

Stop or pause Windows startup programs during boot? [closed]

Is there an application or program that can stop or pause startup programs during boot? For example using a hotkey to pause the startup queue temporarily or simply stop it altogether. Note: This is ...
0
votes
0answers
35 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
vote
1answer
34 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 ...
1
vote
1answer
75 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
60 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 ...
0
votes
1answer
611 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 ...
0
votes
1answer
22 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 ...
0
votes
1answer
583 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 ...
1
vote
1answer
68 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
66 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 ...
0
votes
1answer
31 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 ...
1
vote
1answer
2k 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. ...
-2
votes
2answers
131 views

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

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
3answers
438 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
votes
1answer
31 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 ...
1
vote
1answer
67 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 ...
0
votes
2answers
39 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 ...
0
votes
0answers
24 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
206 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 ...