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45
votes
3answers
6k views

How do you do load testing and capacity planning for web sites?

This is a canonical question about capacity planning for web sites. Related: Can you help me with my capacity planning? How do you do Load Testing and Capacity Planning for ...
34
votes
7answers
26k 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 ...
17
votes
1answer
2k views

How do you do load testing and capacity planning for databases?

This is a canonical question about capacity planning for databases. Related: Can you help me with my capacity planning? How do you do Load Testing and Capacity Planning for Web ...
14
votes
1answer
3k 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] ...
9
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 ...
8
votes
6answers
5k 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 ...
6
votes
6answers
10k 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
13k 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 ...
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.
4
votes
5answers
390 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 ...
4
votes
3answers
869 views

Generate 10 Gbps traffic across nodes

I want perform a network performance benchmarking test so need to generate a 10 Gbps traffic in the network. The nodes are running RHEL 5.x. Can anyone please point me out to suitable binaries etc. ...
4
votes
2answers
988 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 ...
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 > ...
4
votes
2answers
941 views

RAID0 (both hardware and md) slower than LVM?

I'm doing some benchmarking of nodes as we build out a distributed filesystem. Since files are going to be distributed and replicated across many nodes, we're using raid0 on the nodes themselves. ...
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 ...
3
votes
2answers
840 views

iozone benchmark results interpretation

I'm using iozone version 3.373 to benchmark NFSv4 and NBD, but the results are a bit weird! It says that outputs are in KBytes/sec but I am getting values such as 3,411,938 for random read. I am using ...
3
votes
6answers
979 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" ...
3
votes
2answers
454 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, ...
3
votes
1answer
1k 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 ...
3
votes
1answer
143 views

Apache AB (ApacheBench) : -no-check-certificate option available?

It seems there is no option to avoid this error : "Verify return code: 20 (unable to get local issuer certificate)". Is there a way to avoid issuer ssl check with AB (like wget's -no-check-certificate ...
2
votes
2answers
142 views

Are most webserver benchmarks useless? [closed]

There's a plethora of benchmarks out there, comparing Apache, nginx, lighttpd, LiteSpeed/ OpenLiteSpeed, Cherokee etc. Unfortunately, it seems that most of the benchmarks are of the "small static ...
2
votes
3answers
297 views

How to duplicate TCP traffic to one or multiple remote servers for benchmarking purposes?

Infrastructure: Servers in Datacenter, OS - Debian Squeeze, Webserver - Apache 2.2.16 Situation: The live server is in use by our cusotmers every day, which makes it impossible to test ...
2
votes
1answer
89 views

benchmarking a vps system

I've been having some performance problmes lately with my ecommerce package (ASP.net + SQL Server) running on Hyper-V based VPS so I am thinking about switching my VPS for a faster one. To evaluate ...
2
votes
5answers
4k views

Simple Linux server benchmark?

I am working on a product which will run on customer's Linux servers. These systems vary in capability greatly and I'd love to have a single benchmarking tool which I could ask them to run to get an ...
2
votes
1answer
716 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 ...
2
votes
2answers
3k 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 ...
2
votes
2answers
165 views

Local vs cloud benchmark testing — which is better?

I have tried using Apache Benchmark (ab) to test my server. I ran the same test twice -- once locally on my local Mac desktop and once on a Media Temple server I rent. EDIT: To clarify, I am testing ...
2
votes
3answers
144 views

How do I determine the number of seeks performed on Linux?

I have two programs that write to my servers disk. One I wrote, it does linear writes, it's writing data quickly. Another I'm benchmarking, it's writing data at a 3rd of the speed. It doesn't do much ...
2
votes
2answers
325 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 ...
1
vote
6answers
968 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
678 views

What's a good network benchmark test?

What's a good way to benchmark a network connection? I'm looking for something like the Windows Experience Index, but for my internet connection. For example, one place I visit has what seems to be ...
1
vote
1answer
73 views

A practical way to do healthcheck for a new server?

I am currently trying to do healthcheck for a new server in data center as a first QA before using by any application side. "What is the practical way and tools to check that the server is fine to ...
1
vote
5answers
233 views

What is the best way to compare the performance of different servers?

I've got a site with a LAMP stack and I'm looking at moving to a new hosting provider (currently on a dedicated server and looking to move to a cloud provider). What is the best/most reliable way to ...
1
vote
3answers
805 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 ...
1
vote
1answer
984 views

best way of testing HD throughput for random reads on linux

Is there a benchmark program I can use to measure random read speeds of a vps without interference from the kernel cache? Also looking for something where you can change the read sizes say 4k-64k.
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 ...
1
vote
1answer
362 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 ...
1
vote
2answers
423 views

Iozone: sensible settings for a server with lots of RAM

I have just acquired a server with: 2x quadcore Xeons 48G ECC RAM 5x 160GB SSDs on an LSI 9260-8i Before deploying the target platform, I'd like to collect as much benchmark data as possible, ...
1
vote
2answers
179 views

How to benchmark a fiber storage structure

We have an VMware structure, that uses a couple of physical hosts, a blade chassis and two SAN storages (a Fujitsu DX90 and a Fujitsu Fibrecat SX88). The two physical hosts have most of the LUNs on ...
1
vote
2answers
611 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 ...
1
vote
3answers
398 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 ...
1
vote
1answer
30 views

Use switch or direct link

We are thinking of setting up a high availability PostgreSQL server with master-slave configuration (possibly multiple slaves). Should we use a direct link between a master and a slave or let them ...
1
vote
1answer
373 views

Windows 7 Benchmarking Tools That Drive Microsoft Office Applications

Are there any benchmarking tools that can actually drive MS Office applications in Windows 7 rather than just running various synthetic loads? I'm looking to measure the impact on user experience ...
1
vote
1answer
2k views

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 ...
1
vote
1answer
2k views

fio config to measure IOPS against provider SLA

So a provider has given us 500 IOPS/TB as their SLA standards for disk performance in a VMWare & RAID5-SAN environment. This is apparently measured with: 16kB average transfer block size 3:1 ...
1
vote
8answers
942 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 ...
1
vote
2answers
1k 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 ...
1
vote
2answers
298 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 ...
1
vote
2answers
251 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
1
vote
2answers
314 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 ...