The process of running a computer program to assess performance.

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-13
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1answer
607 views

What is the average age of engineers in Google, Apple and etc? [closed]

In continuation of this Why is Google so much faster than a hard-drive search? Is there any statiscics about how old are engineers in great companies? Just curious how much time i have and how much ...
6
votes
2answers
1k views

Benchmarks relevant for a Visual Studio .NET development workstation

I am developing a system with Windows 7 64-bit, Visual Studio and Sharepoint on a virtual workstation on some kind of VMWare server. The system is painfully slow, with Visual Studio lagging behind ...
0
votes
1answer
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 ...
1
vote
1answer
31 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 ...
2
votes
1answer
529 views

Installing HPL, makefile problems

I've followed this guide up until step 5. When I run $make arch=intel64 it gives me the following output: make -f Make.top startup_dir arch=intel64 make[1]: Entering directory `/hpl-2.0' Make....
4
votes
1answer
349 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 ...
0
votes
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 ...
81
votes
12answers
123k 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 ...
0
votes
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 ...
-1
votes
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?
0
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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....
0
votes
0answers
25 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-...
0
votes
1answer
49 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....
1
vote
1answer
482 views

What are some optimal Windows 7 settings for maximizing a graphics card benchmark test?

I am using the HWBOT site to submit benchmarks. I have had some success with CPU benchmarking, achieving a hardware rank of #1 for my specific hardware in SuperPI 1M and #3 for SuperP! 32M. However, ...
1
vote
1answer
1k views

Where can I find performance benchmarks of ALIX.1D system (AMD Geode LX800)

The AMD Geode LX800 processor was popular a few years ago, but now I can't find any information related to performance. If anyone has some good links on this, I would love to have them. This processor ...
0
votes
3answers
459 views

Which is better Intel Celerdon D 351 3.2Ghz or AMD Athlon 64 3200+ [closed]

I have two machines, and I want to make one into a media center. No sure which one to pick. Here are the specs for the AMD Athlon 64 3200+, and here for the Intel Celerdon D 351.
8
votes
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 ...
0
votes
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 ...
0
votes
0answers
34 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. ...
2
votes
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 ...
0
votes
1answer
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 ...
2
votes
3answers
7k 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: ...
3
votes
0answers
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 ...
2
votes
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 ...
1
vote
0answers
112 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....
0
votes
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 ...
0
votes
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 ...
0
votes
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 ...
0
votes
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, ...
2
votes
2answers
3k 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 ...
0
votes
1answer
74 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?
15
votes
4answers
12k views

Is there an equivalent of Memtest86 for CPUs?

I need an easy way to do system stability tests. I have come to rely on Prime95 which does a fantastic job of proving stability (or instability) very quickly; but it requires an OS installed. I would ...
3
votes
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 ...
1
vote
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 ...
0
votes
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 ...
0
votes
2answers
66 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 ...
2
votes
0answers
98 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 ...
3
votes
2answers
293 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 ...
0
votes
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 ...
0
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0answers
57 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 ...
2
votes
1answer
993 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 ...
1
vote
1answer
222 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 ...
0
votes
0answers
247 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 ...
0
votes
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 ...
0
votes
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; ...
3
votes
7answers
2k views

What are the best free(ware?) PC performance benchmarking options out there? [closed]

I'd like to get a rough idea on the performance of my machines, so quite simply: what would you guys recommend as decent, free benchmarking software? Please specify whether your suggestions are good ...
1
vote
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 ...
0
votes
2answers
515 views

SiI 3114 vs. ICH7R RAID performance

I just got two new WD5000AAKS 500GB SATA 3.0Gb/s drives, and I need to put them in a RAID-0 array (I know that motherboard-RAID generally isn't the best for speed increases, but I have little choice). ...
0
votes
2answers
1k views

Is there sofware that can emulate how Oracle works with disks?

Don't now if its a right place to ask, so if not please give me a hint. I need some software that do can emulate how Oracle works with disks (Notice: Not the Oracle workload tool). I've already took a ...
1
vote
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 ...