Date: Sat, 17 Feb 2007 17:08:00 +0100 From: Alexander Leidinger <Alexander@Leidinger.net> To: "Steven H. Baeighkley" <stevenb@frii.com> Cc: freebsd-performance@freebsd.org Subject: Re: bizarre performance issues in 6.2 release Message-ID: <20070217170800.l0au44ygowkw0s0w@webmail.leidinger.net> In-Reply-To: <45D640FE.3070805@frii.com> References: <45D640FE.3070805@frii.com>
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Quoting "Steven H. Baeighkley" <stevenb@frii.com> (from Fri, 16 Feb 2007 16:40:46 -0700): > These servers are running apache, perl, proftpd and php. One server is > running 4.11 and is rocking the world, load is rarely above 1 and is > regularly below .5. The other server is running 6.2 and regularly has > load between 2 and 6 despite serving fewer connections than the 4.11 > box. Using the load of unequal operating system versions as a measure for performance is not a good idea. In fact, the algorithm to count the load did change between 4.x and 5.x (the numbers are larger now, but the box should be able to do the same amount of work). A more appropriate value to measure the performance is to benchmark the number of handled connections to a service in a specific timeframe, or the min/max/avg response time of a request. I suggest to have a look at "ab", "jmeter" or similar tools to measure the performance of a web server. When those numbers are different by an significant amount, feel free to come back and ask for suggestions (but first google around please, accf_http and libthr may make a difference and are well documented). Bye, Alexander. -- Always leave room to add an explanation if it doesn't work out. http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137help
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