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server load testing

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  #1  
Old February 23rd, 2002, 05:54 AM
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Question server load testing
hello,
I made a message board and i want to check how it handles loads.. now i don't know many people who'll be willing to login in and perform stuff on it all the time so i want to know if there's any other way i can simulate a heavy usage environment.. is there any way i can test the database and my scripts??? i'm using mysql at the backend with php at the front...
i thought of writing scripts which can perhaps simulate users but that means that my server and clients are running on the same machine and that really wouldn't give a correct picture of how the server is taking the load..
any help will be appreciated

cheers

p.s. pasted this earlier in algorithms
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Old February 23rd, 2002, 01:57 PM
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Try to use Apache Bench located in the /bin directory of your apache folder.

Anonther Tool which has to be good, I could not test it myself yet ist Stress Test by Microsoft, may not be the exact name. Search the microsoft site and you will find it. It was designed for asp but I read it works with php too.

P.S.: length errors on ab ( apachebench ) occure if the returned content differs in length - so if something changes on your page each time ( banner roation or a static clock ) ignore this error (this took me a few hours to find out ).
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Old February 23rd, 2002, 07:13 PM
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Quote:
but that means that my server and clients are running on the same machine and that really wouldn't give a correct picture of how the server is taking the load..

run your load-test scripts on another machine???
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Old February 23rd, 2002, 08:19 PM
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I'm not understanding the ab man page...

Can somone show me the simplest use of this command?
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Old February 23rd, 2002, 09:55 PM
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Code:
ab -n200 -c50 "http://www.domain.com/cgi-bin/script.pl?param1=blah&param2=blahblah"


will hammer the domain for 200 requests with 50 concurrent connections. Beware, though, this is a pretty resource intensive thing to do to your server.
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Old February 24th, 2002, 12:58 PM
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Perfect!

I was simply missing the quotes around the URL.

Thanks a lot.

Next I'll have to figure out the best way to dump this to something like a flat .csv.

The other cool thing, even though this is ApacheBench, it does not have any trouble hitting any site regardless of Web server.
Last edited by TommyWillB : February 24th, 2002 at 01:01 PM.
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