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8
votes
6answers
7k views

Network latency: 100Mbit vs. 1Gbit

I have a webserver with a current connection of 100Mbit and my provider offers an upgrade to 1Gbit. I understand that this refers to throughput but the larger the packets, the faster they can be ...
2
votes
8answers
1k views

Any tool to benchmark web server performance

What I wanted to know is if there is any easy tool for me to run in Centos linux to know how good the box is. Disk IO, CPU, Memory ...not only the data but their performance under high usage, high ...
4
votes
2answers
1k views

Apache ab: choosing number of concurrent connections

I can't find anything that specifically elucidates the number of concurrent connections that are reasonable - nor can I find any treatises or research on this topic. The boss says "The server needs ...
18
votes
1answer
4k views

Apache ab: please explain the output

I've looked around, and can't find any detailed explanation of the output at all. Most is indeed easy to understand, but there is one part that flummoxes me: Time per request: 109537.505 [ms] ...
0
votes
1answer
354 views

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 ...
0
votes
2answers
89 views

Cloud suited for benchmarking

Sorry for possible double post : I moved this question from stackoverflow, since it fits better here. I use Amazon EC2 as my working machine, which is all dandy. But I also need to run CPU intensive ...
2
votes
2answers
349 views

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 ...
0
votes
1answer
1k views

Benchmarking hosting providers IO with Bonnie

Ok, because of a bunch of projects I'm working on I've access to dedicated Servers on a 3 hosting providers. As an experiment and for educational purposes I decided to see if I could benchmark how ...
1
vote
6answers
1k views

How to test the connection speed of a server?

What are the techniques to test the connection speed of a server (in my case, virtual Ubuntu server @ Slicehost)? Bonus points for one liner bash command.
1
vote
2answers
649 views

Need help trying to diagnose Symmetrix SAN performance issues

I am helping to benchmark hardware for a new SQL Server instance, and the volume presented to the OS for the data files is carved from a set of spindles on a Symmetrix SAN. The server has yet to have ...
2
votes
1answer
753 views

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 ...
7
votes
4answers
16k views

How to generate CPU load on Linux server

I would like to test fake load on the server, I'm looking for some burn-in or benchmark command line utility that would generate CPU load on the system. I would like to be able to burn-in only CPU ...
1
vote
1answer
102 views

Verify server performance

I'm looking for a quick and SIMPLE way to verify that new servers are performing as expected. The most important metric is disk performance, second is network performance. I’m trying to prevent ...
3
votes
2answers
495 views

Best Practices for Webserver Benchmarking

I have a webserver that I wish to benchmark before I make some optimizations to it to see if they have any effect. However, I want to know what are the best practices for benchmarking? For example, ...
0
votes
1answer
68 views

bench marking windows machine - [closed]

We have a Java based product that is mainly used on windows. Some customers complain that application is slow. We have analysed product using JProfiler and improved various bits. As a next step, it ...
1
vote
1answer
456 views

Oracle DB emulator

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 DB works with disks (NOT ORACLE WORKLOAD TOOL). I've already took a look at ...
2
votes
2answers
4k views

IOMeter - What values should I test with?

In some ways I guess this is a piece of string question, however even if there is a "this fits most situations" answer I have no idea what it is, so... I have a SAN on evaluation, an HP P4000. I'd ...
1
vote
2answers
2k views

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 ...
0
votes
2answers
168 views

big difference in HTTP response time between US and UK clients

I am looking into a problem with some images hosted in the US, that some users get really slow load times. This image for example; ...
0
votes
1answer
471 views

Apache Bench high standard deviation

I´m having problems doing apache benchmarks with ab on my servers. Basically, all the results got a high standard deviation, invalidating the results. This is an example resultset: Connection Times ...
11
votes
2answers
3k views

Alternatives to apache benchmark?

I'd like some tools for ubuntu that I can use to test my server, how much it can handle. Any suggestions? I've used apache benchmark before, but I'd like to try out something else. (As a side ...
1
vote
2answers
366 views

Is there a way to limit how fast apachebench connects to the server?

I'm trying to stress test a particular PHP script that forces a a very large file to download, but specifically when clients with slow connections are making the request. I also want to concurrently ...
3
votes
1answer
2k views

Tips for benchmarking and load testing web server?

I'm trying to benchmark and load test various web server setups (mod_php vs php as fastcgi, max/min worker/thread configuration, and so on). I'm starting with ab, but would be interested in other ...
0
votes
2answers
422 views

Benchmark different kind of SQL database :What's the best test to do?

I have an application that i can configure to get data from different kind of SQL database server, for example Postgres, MSSQL, MySQL, Firebird ... I must install this application and the database ...
3
votes
3answers
1k views

Artificially burden the CPU

I'm looking for a command line application that will artificially burden the CPU. It needs to be better than just a busy loop. We're testing how the system holds up under heat stress and the CPU ...
4
votes
5answers
456 views

is there anyway to know if your supposedly fully dedicated server is really a virtually resource-shared machine? [duplicate]

sometimes I feel my server not responding as smoothly as I would expect (i have a Intel(R) Xeon(TM) CPU 2.80GHz Quad Core), given that for example, the 'top' commands reports a low load < 0.5, CPU ...
0
votes
2answers
770 views

why is iometer performance slower after first run?

I'm doing some benchmarking with IOMeter, and I'm seeing a consistent and susbtantial drop-off in performance after running the first test in my VMWare environments. These drop-offs are about the ...
1
vote
1answer
769 views

benchmark tcp: ab or iperf like tool to send hex/binary/pcap data?

I have written a server in Twisted for a current project I'm working on, and now I need to test it. It receives TCP packets, with the payload consisting of just a serialised binary string. I want to ...
0
votes
1answer
551 views

How to benchmark apache/nginx setup

I am planning to setup nginx as reverse proxy. I will have apache to deliver my dynamic content, and nginx will deliver the static content. My configuration i have now is just Apache with fastCGI. ...
0
votes
3answers
606 views

Radius server benchmark

I wrote some module for FreeRadius and need to check it's performance. Using radclient is not OK because radius server is multi threaded and radclient not - it waits for an answer for previous request ...
1
vote
2answers
255 views

vmware vs normal server

what is a good benchmark for me to run on my old server and my new vmware server? I want to verify that I have not lost any performance between the two
7
votes
6answers
11k views

Estimate FLOPS in Linux?

I am looking for a quick and easy program to estimate FLOPS on my Linux system. I found HPL, but getting it compiled is proving to be irritating. All I need is a ballpark estimate of the FLOPS, ...
5
votes
4answers
1k views

Benchmark linux box

What's the best tool to benchmark a linux machine? I'm comparing machines from two different cloud providers. It needs to be a command line tool. Just need to benchmark CPU and I/O performance.
0
votes
2answers
609 views

Volume benchark (software RAID) as opposed to drive benchmark? Bonus for free solutions

If I want to test a single drive I can use HDtune, HDtach, etcetera to test one drive at a time. Unfortunately these tools don't help for testing software RAID. As long as Disk Management in windows ...
1
vote
3answers
859 views

How to benchmark openvpn server

Ive successfully setup a tunnel between my home ubuntu desktop(Japan) and my remote server(UK) using openvpn. Ive set it so that i can have the server fetch pages for me hiding my desktop ip to bypass ...
0
votes
2answers
234 views

How do I know when server “runs at speed limit”?

Basically I'd like to know if it's possible to speed up my server or not by using caching like squid, checking for possible errors in configuration, optimizing various server software parameters, etc. ...
3
votes
6answers
1k views

Can I automate XEN? And to what extent

I am wondering about a certain scenario. User on some machine runs a command. This unpacks XEN and boots up domain 0. Domain 0 boots up 3 other domains that are setup in this way. One is a "client" ...
1
vote
3answers
407 views

Windows Benchmarking Software

I want to run benchmarks on several machines all running different versions of Windows (XP, 2003 Server, 2008 Server, Vista). Most of them are virtual machines, so I'm more interested in the ...
4
votes
5answers
6k views

Disable all disk caching for apache2 on linux

For benchmarking purposes I want to force Apache 2 to load each requested file from disk instead of loading it from a cache in memory. From what I have read doing a sync followed by echo 3 > ...
1
vote
5answers
2k views

How can I generate different levels of disk load on a Linux (2.4) system

I need to find out about the impact different levels of disk I/O have on my application. To do so I am looking for a way to generate different amounts of disk load while I am running the application ...
36
votes
7answers
29k views

What is the best Linux filesystem for MySQL (InnoDB)?

I tried to look for benchmark on the performances of various filesystems with MySQL InnoDB but couldn't find any. My database workload is the typical web-based OLTP, about 90% read, 10% write. Random ...
1
vote
2answers
325 views

ApacheBench: Request times going into the ether

I have an Apache server that's proxying to Tomcat via mod_jk. I've set up a custom log in Apache to log the access times: LogFormat "%h %l %u %t \"%r\" %>s %b %D" transfertimes CustomLog ...
1
vote
2answers
416 views

Measuring performance drop-off of solid state drives with IOmeter

I would like to measure the performance drop-off in solid state drives when the drives are getting close to full capacity. In particular, I would like to benchmark random and sequential read/writes. ...
1
vote
3answers
1k views

What program can I use to benchmark network traffic? [duplicate]

Possible Duplicate: How to test real network throughput between two points? Given two computers connected by some network interface, is there a standard tool used by an academics publishing ...