The process of running a computer program to assess performance.

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19 views

Live linux Image to test hardware [closed]

Is there a iso image out there, with which has almost all the important packages related to hardware testing like benchmarking, hard disk tests, ram tests etc. We have a lot of old computers and would ...
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1answer
34 views

Very slow random read of SSD on desktop (9,000 IOPS) but normal on laptop

I just purchased a new Plextor M6V 512GB SSD and am experiencing very low 4K Q32 read speed. 36 MB/s = ~9,000 IOPS which is 10 times as low as specification value. Why could it be? Motherboard: ASUS ...
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0answers
26 views

Benchmarking network latency

I am trying to measure the latency of sending a packet. I do this as follows. The client sends recorded time. The server receives the packet and gives the difference between the current time and the ...
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0answers
10 views

Geekbench 3 as performance prediction for games

Let's assume games optimised for multicore performance. Let's assume benchmark result as middle average result from the whole range of available results. If a certain CPU has twice geekbench score of ...
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1answer
22 views

How to compare my laptops CPU performance with something current

I have an older MBP 2010 model with an i7 processor. How can I compare or get an idea how fast a modern day MBP will be?
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0answers
18 views

Benchmarking with Bonnie++

I need some help in interpreting this Bonnie++ results. These are the results from two VMs with Ubuntu 14.04 with identical hardware resources. One is running apache web server, other is running MySQL....
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0answers
27 views

How to change the test parameters for aio-stress test in phoronix-test-suite

I am using aio-stress test from phoronix-test-suite for bench-marking my linux server. Currently, the aio-stress uses 2GB[2048KB] test file and 64KB record size for random write and gets the write-...
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1answer
50 views

Showing the error : “No Internet Connectivity ” for Phoronix-Test-Suite :(

I have successfully installed Phoronix-test-Suite in my linux server [ Of the various options available, I have done it by downloading and extracting the software and installed it using their install....
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0answers
24 views

How to use dacapo benchmark

Hi I am going to use dacapo benchmark for the first time. I want to test the performance of a program that instruments calls to next and hasNext in the main program. I am not sure how I can do that ...
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35 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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1answer
18 views

Disk benchmark exceeds theoretical maximum

My laptop has 2 X 256GB SSD in RAID 0 each one is rated at: 540/450MB/s for read/write. On Crystal disk mark using 8 threads and 8 queues and 4GB test size it got 2811MB/S for Read but I am not ...
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43 views

Are popular benchmarks valid comparisons of architectures?

Recently, people have been very excited over Apple's ARM processor capabilities, citing benchmarks results that rival x86 processors. However, I am kind of skeptical of these benchmarks: though the ...
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59 views

Which hard drive is in better condition according to the tests performed?

I have two hard drives, both 500GB Samsung, but it catches my attention that when I test the disk performance, the graph of the results show a very different behavior ... What could this mean? Which ...
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0answers
113 views

Why is my new computer benchmarking (and performing) much more slowly than my old one?

I recently purchased a new work computer that I use mainly for scientific computation. Supposedly, it is a beast. Here are some relevant specs: Processor 48x Intel(R) Xeon(R) CPU E5-2670 v3 @ 2....
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2answers
1k views

Benchmarks like Antutu/GeekBench for Windows PC?

Can anyone tell benchmark/scoring programs for Windows PC. I am not considering the score in Windows Settings, only third-party tools. There are plenty for Android like Antutu or Geekbench. I want ...
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0answers
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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1answer
35 views

How has chrome's performance changed over time?

Chrome has always claimed to be about performance. The super fast browser I installed years ago does not seem that super fast anymore. Is there some list of benchmarks under different versions of ...
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1answer
52 views

How can I easily benchmark my laptop and compare with others?

I came across Phoronix Test Suite because it was the only one I found on the internet which integrate your results with others (openbenchmark.org). However, besides it presents itself as an easy tool, ...
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1answer
77 views

What does QD4 mean in context of SSD performance?

I'm looking at various SSD benchmarks and found that they sometimes specify the "QD4 random read" performance. What does this mean?
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0answers
15 views

Determining average i/o file size on my computer

I'd like to see what the average data size is that my computer reads and writes to the hard drive. Many of the SSD benchmarks assume a 4K block of data, but what is my workload averages 16K? How ...
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1answer
1k views

Fastest Linux Filesystem on Shingled Disks

There is considerable interest in shingled drives. These put data tracks so close together that you can't write to one track without clobbering the next. This may increase capacity by 20% or so, but ...
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1answer
98 views

Wouldn't SSD benchmarks ruin the SSD because of repeated iops?

I don't know much about SSDs but I have heard that they wear out really quickly are pretty limited in the amount of read/write operations they can handle. How would SSD benchmarks not ruin an SSD ...
4
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1answer
353 views

Why is moving files between btrfs subvolumes an expensive operation?

From what I understand, btrfs subvolumes share the same file system "storage", so I was surprised to know that moving files between different subvolumes is an expensive operation, like moving between ...
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0answers
99 views

Is shred single pass less secure than srm?

i compared shred -n 1 -v --random-source=/dev/zero file.txt and srm -llvzd file.txt on 16gb file on hdd. ubuntu 14.04. both commands do single pass with zeros. 'srm' needed more than whole night ...
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2answers
296 views

Intel RS3UC080(LSI3008) + Samsung Evo 840 = slow writing performance?

I am getting pretty slow writing performance in comparison with my Z87 board. Does anybody know if these results are to be expected out of the Intel RS3UC080 or what the problem might be if there is ...
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3answers
73 views

Is there anyway to produce realistic load(cpu,memory and disk all together) on a linux system?

I am using Ubuntu 12.04 and I want to stress test my system but most of benchmarks are specific in nature. Either they are benchmarking Disk or CPU or Memory usage etc. But is there anything which can ...
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58 views

Extreme speeds from a hard drive that shouldn't be this fast?

I have a Seagate 7200rpm drive and for some reason ATTO Disk Benchmark concludes that this drive is around 220 MB/s read and write. Isn't this unrealistic for a drive of this kind? ATTO displays the ...
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2answers
67 views

How to implement Intel MPI benchmarks for mpich2?

Many people have recommended the use of Intel MPI benchmarks for mpich2, however the installation is not very simple. Could anyone provide steps for the installation and sample test case for it? Which ...
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1answer
223 views

Why is different throughput using netperf?

I am using netperf on Windows OS, with two computers connected with cross-over cable. First PC is using a Realtek FE network controller, and second PC has a Realtek GBE controller. With the first PC ...
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250 views

Running Linpack on Linux High performance computer

I am trying to do some benchmarks on Linux HPC machine which specs are as following Total CPUs: 160 cores using latest 16C AMD Opteron Processors Total main memory: 640 GB of 1600MHz Total GPUs: 1024 ...
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1answer
58 views

Bench-marking my SSD gives unreasonable number

I have a SAMSUNG 840 EVO SSD (120GB) installed on my laptop. According to the SAMSUNG website, it has 520 MB/s max read and 500 MB/s max write (sequential). I am trying to benchmark it using ...
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0answers
214 views

How important is the 4k speed test for real world applications, in a USB flash drive? [closed]

So I am evaluating which flash drive to buy, and at the moment I am considering some USB 3.0 drives, which has a similar sequential R/W value. The difference is that for the 512k test, the values are ...
2
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1answer
996 views

SATA III vs. SATA II…getting two different pieces of information

I recently purchased the Samsung SSD 850 EVO 250GB to replace my (rapidly filling) 64GB OCZ Vertex 2. The drive installation went very smoothly - I was extremely happy with that. However, after I ...
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2answers
11k views

Performance difference between SD and MicroSD cards?

If you compare a MicroSD card with an advertised speed of 48 MB/S to a full size SD card with an advertised speed of 48 MB/S (from the same manufacturer), should their performances be identical? Or ...
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1answer
337 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
50 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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0answers
365 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
4k 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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2answers
125 views

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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22 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
92 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 ...
0
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1answer
396 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
484 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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1answer
60 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
26 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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1answer
114 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 ...
2
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0answers
1k 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 ...
2
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2answers
560 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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1answer
367 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, ...