The process of running a computer program to assess performance.

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7
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2answers
7k 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
6 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
23 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
16 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
30 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
58 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 ...
1
vote
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
51 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 @ ...
0
votes
2answers
176 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
20 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
31 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
41 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, ...
66
votes
11answers
100k 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 ...
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
39 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
11k 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 ...
2
votes
1answer
701 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 ...
4
votes
0answers
172 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 ...
1
vote
0answers
12 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
74 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
45 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
68 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 ...
0
votes
0answers
12 views

Enable fine grained, thread level timings for benchmarking?

I need to perform some benchmarking on Linux, and I'd like to use Fedora or Ubuntu. Linux kernels don't provide fine-grained, thread level timing information. About all I can get is process times. ...
0
votes
0answers
11 views

Finding maximum number of VMs that we can run on a machine

Goal Goal is to find out total number of VMs that we can run on my machine which are generating given amount of load. Problem I want to generate some load inside the VM, say 25% of alloted cpu, 10 ...
3
votes
2answers
213 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
56 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
votes
0answers
54 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
861 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
160 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
156 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
51 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
185 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
490 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
110 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 ...
1
vote
2answers
332 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 ...
0
votes
1answer
74 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), ...
0
votes
1answer
229 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 ...
1
vote
0answers
41 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 ...
12
votes
2answers
2k 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, ...
1
vote
0answers
272 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 ...
0
votes
0answers
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 ...
-2
votes
2answers
86 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
votes
1answer
348 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: ...
1
vote
0answers
394 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 ...
3
votes
5answers
482 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 ...
1
vote
1answer
59 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 ...