Date: Wed, 27 Feb 2013 22:38:34 +0000 From: Frederico Costa <fredports@mufley.com> To: Michael Ross <gmx@ross.cx> Cc: freebsd-questions@freebsd.org Subject: Re: Performance Related Question Message-ID: <95256df2d5f04884368acf0f73bb82d0@www.mufley.com> In-Reply-To: <op.ws6rcqqsg7njmm@michael-think> References: <8d801e895617b492ddf724b6ce980448@www.mufley.com> <op.ws6rcqqsg7njmm@michael-think>
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On 2013-02-27 22:27, Michael Ross wrote: > If I read you right, you didn't ``make -jX buildworld'', > with X being the number of processes to spawn, > so you used just one core on either machine. > > Buildworld does a lot of I/O, so disk speed is relevant. Yes, i just made "make buildworld". So i should use make -j2 on the S1(dual core) and -j4 on S2 (2xdualcore)? And it also makes sense what you say about the I/O. i will start another to see the results. Thanks fred > On Wed, 27 Feb 2013 23:05:44 +0100, Frederico Costa > <fredports@mufley.com> wrote: > >> Hi everyone... >> >> I have a kind of interesting question when comes to performance of >> FreeBSD in different HW. i am not trying to come up with a scientific >> reason for measuring performance. :-) >> >> It is just a curiosity, and of course to see if i understand it and >> improve performance of my systems. >> >> i am running 2 systems at the moment, lets call them S1 and S2, >> running FreeBSD 9.1-RELEASE-p1 amd64: >> >> S1: >> Intel Core2 Duo E6550 @ 2.33GHz >> 2GB RAM >> 500GB disk (not important probably just for reference) >> >> S2: >> 2x Dual-Core AMD Opteron 2216 2.4GHz >> 14GB Ram >> 320GB disk (not important probably just for reference) >> >> Both the systems are running more or less the same sw, apache, imap >> server, postfix, and the needed perl/php/python and running very >> light >> load. Also both are using a GENERIC kernel and not running X, they >> are >> just text based :-) >> >> From cpubenchmark.net the cpu performance index are for s1: 1501 and >> s2: 1518, so very similar. >> >> As i felt the AMD system seemed slower when comes to compiling, i >> just >> done a "performance test" which was "make buildworld" on both of >> systems from scratch and the times are: >> >> S1: 2h 12m >> S2: 2h 59m >> > > If I read you right, you didn't ``make -jX buildworld'', > with X being the number of processes to spawn, > so you used just one core on either machine. > > Buildworld does a lot of I/O, so disk speed is relevant. > > > Regards, > > Michael
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