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Questions tagged [benchmark]

Benchmarking is the process of gathering data about the performance of a system in different scenarios to measure the impact of changes to the system, to compare the system with other options, or to determine maximum capacity.

Benchmarking is the process of gathering data about the performance of a system in different scenarios to measure the impact of changes to the system, to compare the system with other options, or to determine maximum capacity.

Benchmarking is a multidisciplinary process and can require management, engineering, operations, data science. and user experience expertise.

A key concern when benchmarking is making sure the tests performed are analogous to how to system is actually used. When benchmarking a server, the following metrics may be considered (in addition to countless others):

  • Ping response time
  • Average Load
  • Number of Dropped Requests
  • Number of Concurrent Connections Possible
  • Power Consumption
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Apachebench on node.js server returning "apr_poll: The timeout specified has expired (70007)" after ~30 requests

I just started working with node.js and doing some experimental load testing with ab is returning an error at around 30 requests or so. I've found other pages showing a lot better concurrency numbers than I am such…
Scott
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x86 Router Benchmarks?

I have grow to prefer x86 based router OS's like Vyatta and pfSense over their competitors Cisco and Juniper (I never really used Juniper, but still.). However, they feel "fake" to me, like "Frankenstein" routers. I think my greatest worry is that…
Soviero
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Do these results look right for 4xSATA in RAID 10? The writes are faster than the reads?

Do these results look right for a RAID-10 consisting of 4x1TB Samsung F3 SATA drives connected via a Dell Precision T3500's integrated RAID controller (which I believe is an Intel-based "FakeRAID")? I understand speeds will vary based on the…
ScottBai
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What benchmark tool to use to benchmark hardware for VM server?

We are setting up a new piece of hardware to virtualize several of our servers on. Choices are RAID 5, RAID 6, and RAID 0+1. We are wanting to benchmark all three before we go live with the machine, but I'm not sure how to test the speed. Since we…
boatcoder
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What's a good free open source hard drive benchmark?

After a quick search on Freshmeat I found nothing. Anybody know of a good utility? I normally use time (dd if=/dev/zero of=newfile ...) to test write speed and hdparm -t to test read speed. Thanks.
Stewie
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Testing SSL performance on Nginx

I'm running nginx 1.0.0 on CentOS 6 x86_64 with stock OpenSSL. Below are results of openssl benchmarking. sh# openssl speed aes-256-cbc OpenSSL 1.0.0-fips 29 Mar 2010 built on: Sat Jun 25 04:58:15 BST 2011 options:bn(64,64) md2(int) rc4(1x,char)…
bas
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Transfer between internal disks slows down for large files

I'm running a Ubuntu Server 11.04 (amd64) on a machine with 1.6Ghz dual-core CPU, 4GB RAM, and 2x250GB 7200 SATA drives (both 3.0Gb/s and newly formatted from a fresh install). When I transfer relatively small files (~100MB) between the two drives,…
Shaddi
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Understanding PassMark CPU benchmark results

I'd like to know how the CPU benchmark results for CPUs posted at, for example, http://www.cpubenchmark.net/high_end_cpus.html, compare. Is the scale linear, so that a CPU with a score of 2,000 is, on average, twice as fast as one with a score of…
Brian
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Best way to benchmark linux virtualization solutions

I'd like to run some benchmarks on linux virtualization solutions (namely Xen, KVM and OpenVZ) and I'm currently thinking about how to set up the test environment. My current approach would be the following: Set up a bare server system Install all…
maff
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ejabberd benchmarks and performance

I'm considering to use XMPP for messaging platform (not a chat, I'd rather use it as a transport protocol) for communicating one to one, one to many between custom clients and I think I will extensively use channels. Can someone share some…
michael
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How do I interpret ByteMARK / nbench results?

As part of a server burn-in process, I am running nbench (BYTEmark). The results show two FLOATING-POINT Indexes and two INTEGER Indexes in the results, one under "Original Bytemark" and the other under "Linux data below". Which is the "real"…
JeffG
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Benchmarking MS SQL Server 2008

We have several production SQL servers, some physical, some virtual. I would really like some generic scripts that I could run against each maybe using AdventureWorks to stress test them and compare the performance. Does anyone know of anything…
Joel Mansford
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Performance comparison between LDAP servers

Has anyone ever compared different LDAP servers? I am currently planning to upgrade ADAM to another server, and I'd like to know how do they perform. Currently the options that I am researching are: Active Directory (LDS) OpenLDAP Red Hat Directory…
Pablo
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Apache Bench -- How to read AB data? My small, cloned dev server outperforms my production server. How do I rule out server hardware as an issue?

I'm getting very confused how to read Apache Bench data. Apache Benching my local machine gives me wildly different numbers between my dev linode and my production linode. My dev server is a 512mb linode freshly cloned from my 2gb linode, which…
Yuji Tomita
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Benchmarking hard disks on Mac OS X SL

On Linux I would usually use "hdparm -tT device" when I want a quick idea of how an hard drive is performing compared to another; having switched to Mac OS X a few months back I have yet to find something similar and as easy to use. I have read that…
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