The process of running a computer program to assess performance.

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Bash parameter Expansion: Best practices for speed?

I was just wondering if anybody knows any best practices or if there is any documentation about this topic: The scenario is searching / grepping in the log files. To make my point I will use ls. So ...
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2answers
250 views

How to measure the render time of 3ds max?

How do I measure the render time of 3ds max? I would like a solution that doesn't involve me sitting glued to the computer during the render time! It also has to be sort of accurate. My specific ...
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1answer
67 views

How can I decide real vs virtual cores if i need intensive calculus?

Assume that I have a computer called A with a processor that has two cores and has hyperthreading, i.e it has 2 cores with 4 threads (I understand that this can supply to 4 processes simultaneously), ...
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1answer
26 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
29 views

Monitor disk I/O used by specific command

I know that there are various tools for monitoring disk I/O, but I am wondering specifically if there is something equivalent to time for disk usage? For example, I am benchmarking a specific command ...
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2answers
1k views

Are there any benchmarks showing difference between hardware virtualisation enabled/disabled?

I have a 13" sub-laptop/large-netbook, it has an AMD Athlon Neo X2 L335, and I chose this one because it supports hardware virtualisation. In the end, I hardly do any virtualisation on it, however, ...
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0answers
52 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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2answers
110 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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20 views

Low Memory Performance

I am currently benchmarking some of my code to see where the bottleneck is. My memory is DDR3 1066MHz DualChannel Mode This should result in 17GB/s peak memory performance. With my code I am ...
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2answers
41 views

How to correlate CPU benchmarks to overall computer performance? [closed]

I am in the market for a new PC, and I know I can look up the CPU model name to see which one performs better in a benchmark test. However, how do I translate this into PC performance? What sort of ...
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8answers
49k views

How can I produce high CPU load on a Linux server?

I'm currently in the process of debugging a Cacti installation and want to create CPU load to debug my CPU utilization graphs. I tried to simply run cat /dev/zero > /dev/null, which works great, ...
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0answers
30 views

How I can use Iozone to measure USB sticks?

I need to do some benchmarkings with various file systems (ext3, ntfs, ...) on a USB flash driver. I will format the USB stick every time to do the tests. The problem is I don't know how appoint the ...
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1answer
137 views

How to tell, before buying, if a given graphics card will play Full HD video?

I am looking for the cheapest video card that would be capable of smooth playback of Full HD (1080p) video on a Full HD screen. An answer by @Mikhail on a related question briefly mentioned that: ...
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0answers
139 views

Comparing an i7 (3.2Ghz) against an i5 (2.5Ghz) using linpack shows the i7 being worse

I am trying to compare the number crunching performance of an i5-3210M @ 2.5GHz with 6GB ram and an i7 970 @3.2GHz with 24GB ram. The results are so unexpected I presume I am either doing something ...
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5answers
476 views

What options do I have for benchmarking software? [duplicate]

Possible Duplicate: What are the best free(ware?) PC performance benchmarking options out there? Can anyone tell me some benchmark software for Windows? I'm using PassMark PerformanceTest ...
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1answer
51 views

Benchmark performance 30% speedup in mains over battery operation?

This observation arose as I was evaluating the running time efficiency of various implementations of a prime sieve algorithm. The surprise was finding that differences between the best algorithms was ...
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0answers
21 views

Is there a way to run a job exclusively on a chip?

We've got a bunch of large (1TB+) NUMA machines at work and have been getting a lot of noise in benchmarking. We've noticed that run times for our application are very consistent from one run to the ...
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0answers
28 views

USB bench marking shows faster write speeds after fragmentation? How? [duplicate]

I am currently benchmarking my 3.0 USB Flash drive both fragmented and defragmented. My initial setup consisted of Crystal Disk Mark and a flash drive with no files on it. I recorded the output ...
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2answers
1k views

Makefile fails to install file correctly, installing HPL

I started installing HPL a while ago, and had a related question. I've been following along with this guide from Intel. I figure this warrants a whole new one. When I try to make the archive, the ...
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1answer
56 views

MIPS as a measurement of raw integer data processing

I'm looking for a way to contextualize generational differences in computing performance. Is this a correct application of the MIPS measurement? MOS 6502 - 0.500 MIPS at 1 MHz. As an 8-bit CPU it ...
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0answers
297 views

Disable all disk cache features in Windows 7

I am doing benchmarking of several algorithms involving read/write to disk. As Windows provides some cache features, sometimes I get results like these : first run of the algorithm : 200 seconds ...
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votes
4answers
25k views

AFP, SMB, NFS which is the best data transfer protocol?

I have a computer with large hard disks running Gentoo. I have to serve med/big files via a wired network to Apple devices (all of them running OS X). Which protocol is the best for the following ...
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7answers
2k views

How to measure disk performance? [duplicate]

A friend has asked me to perform maintenance oh his computer. The described symptoms point to a performance issue with the hard drive. I want to objectively confirm this suspicion by measuring the ...
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2answers
397 views

What are good benchmarking programs for measuring usb stick performances?

Title pretty much says it all ... anyone know of a benchmarking program for measuring usb sticks read/write speeds ? (if it can produce its own files, even better ... in terms of (lots of small ...
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2answers
4k views

ZFS raidz2 performance issues read/write speeds on Freenas

I'm having some performance issues on my home backup FreeNas box using a raidz2 configuration and I am wondering what might be causing it (not enough processing power, eco drives?). It's running: ...
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2answers
171 views

SD card speed differences

I'm trying to benchmark a micro SD card, and in the process it seems that my laptop's card reader is to blame, but I would like to make more experiments to be sure of it. I have a supposedly Class 10 ...
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0answers
89 views

Is there any HPL benchmark analogs for CPU/GPU clusters?

I'm building little CPU/GPU cluster for my home needs. Im using this cluster for CPU and CUDA computing. I have 3 PCs and each of it has 1 or 2 videocards and each of it has different CPUs. I need to ...
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0answers
82 views

Benchmarking RAID array with gnome-disk-utility

I want to run a quick benchmark to see if there is any performance advantage of my RAID 1 array. Array is the system disk, and while I can run benchmarks on each single disk, I can't find how to do it ...
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1answer
305 views

Clues to guess CPU performance for single-threaded tasks

Can one somehow guess how for example Intel Core i5-3320M @ 2.60GHz (dual core) and Intel Core i7-3612QM @ 2.10GHz (quad core) would compare on basic single-threaded tasks? I know this is problematic, ...
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2answers
12k views

How come my Intel 520 180GB SSD performs extremely poorly?

I recently installed a new Intel 520 series 180GB SSD in my brand new MacBook Pro. The system is as follows: Model: MacBook Pro 15-inch, Late 2011 (MacBookPro8,2) Processor: 2.4 GHz Intel Core i7 ...
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1answer
96 views

HTTPD benchmarking tool that parses output

I'm trying to benchmark a HTTP server. It's becoming quite obvious that I won't get accurate numbers if the tool being used doesn't parse any output (the JavaScript and HTML). Does anyone know of a ...
0
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1answer
69 views

Find out information about installed hard- and software using the terminal without admin rights

I have access to a remote server, to which I login via ssh. I don't have admin rights, but I like to find out as much as possible about the machine, among other things to see If I get what I pay for. ...
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2answers
631 views

What does the file /proc/cpuinfo tell me about the hardware?

I rent a server which should have "2 Cores x 2,2 GHz". When in run the command cat /proc/cpuinfo I get the following result: processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : ...
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1answer
520 views

What are the fastest CF (Compact Flash) readers?

I'm looking for a good CF reader, but it's not easy to find readers specs on online stores, so I don't know what I can buy. Are there any benchmarks online? Now I have an external Skintek CF reader ...
2
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2answers
908 views

Is Prime95 a dual-core tool?

Does Prime95 use multiple cores? (Is there a difference in this regard between running it from Windows, UBCD, or UBCD4Win?) If it doesn't, are there tools out there that will (preferably via a boot ...
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1answer
42 views

Low benchmark= faulty or slightly faulty cpu?

If a phone/computer scores slightly lower on a benchmark than the rest...not drastically but significant enough to be noticed could the cpu be damaged? What I am asking is that if a cpu is damaged ...
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2answers
2k views

Test disk write speed on existing partition

I want to benchmark write speeds on a disk in an existing server setup. I suspect there is a problem with the write perf of the controller. Benchmarks I have tried (SiSoft Sandra, HDTune) report that ...
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1answer
216 views

Why the here-strings in bash are slower than piping the input to a command?

I compared the execution time for unix here-strings and pipe data input to bc: pipe time for i in {1..1000} do echo "sqrt(5.09)" | bc -q > /dev/null done real 0m3.584s user ...
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1answer
71 views

can benchmarking burn computer components

I only have the ordinary cooling mechanism of a computer. 1 fan for the power supply and two fans that share the same cable. Can benchmarking my computer lead to burning of the processor or the ram or ...
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1answer
218 views

Multi-threaded execution of simple perl/python script

Some years ago a friend created a 'benchmark' (Note: Not a benchmark) by which wouldwhich we measure one raw aspect of computing power. Namely how fast (or indeed slowly) the computer could count to ...
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2answers
217 views

That Unix game used for testing and benchmarking the system

I remember having read about a game that was used in the first UNIX versions for testing if all libraries have been installed correctly and the overall benchmark of the system. Does anyone know what ...
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1answer
438 views

Why are some computers are slow during file copy process?

I have a modern laptop (quad-core i5 2.5GHz, 4GB RAM, ) at work. But it is very slow and unresponsive when I copy files in the background.On the other side, at home I have a simple 2-core PC (E2180 2 ...
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3answers
5k views

Why the results of Truecrypt and cryptsetup (LUKS) benchmarking are so different?

I want to encrypt a part of my HDD. But before that I wanted to benchmark the different algorithm available wondering if I should choose aes-xts-256 or aes-xts-512. Note: I don't have aes hardware ...
4
votes
2answers
703 views

Is it necessary to tweak config for a new SSD?

I've read some years-old posts that say you should tweak some options in Windows to get the best performance. But then I read that this is no longer necessary with today's SSDs. I installed a new ...
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votes
4answers
4k views

How to test router-to-PC connection speed?

Is there a way to benchmark how fast my router is connected to my PC, independent of the internet? I've had slower-than-usual internet-based benchmarks, and I'm having a hard time figuring out if ...
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0answers
103 views

How to benchmark hard disk? [duplicate]

I am trying to benchmark my hard disk and find the throughput in Mb/s and latency in milliseconds. This is my code: public class OneMB implements Timer { public static void main(String a[]) throws ...
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1answer
1k views

How do I tell which desktop CPU is best for virtualization with 6-8 virtual machines?

I am looking to run between 6 and 8 virtual machines, each running Windows XP. Each virtual machine would run Magic Online (MTGO) and a few scripts for data sharing. The host itself would run nothing ...
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3answers
3k views

Is there a list of graphics cards ordered by relative performance?

I'm struggling to make sense of graphics card manufacturers' cryptic names and codes for their products. For example, some cards with a higher number or code in the name are actually less powerful ...
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2answers
160 views

Quality control for a large number of promotional USB flash drives

My company is ordering a large number of USB flash drives for promotional purposes as well as retail sales. We will be getting a sample of them shortly to test. The previous lot that we had failed ...
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1answer
164 views

Is bigger capacity ram faster then smaller capacity ram for same clock and CL?

I know that bigger capacity hard-drives with the same RPM are faster then smaller capacity hard-drives. I was wondering if the same is true for ram. Given two ram clocked at 1600mhz and with identical ...