Date: Thu, 11 Jan 2001 01:13:18 +0600 (NS) From: Max Khon <fjoe@iclub.nsu.ru> To: David Miller <dmiller@sparks.net> Cc: Alex Kapranoff <alex@kapran.bitmcnit.bryansk.su>, Tom Samplonius <tom@sdf.com>, Lauri Laupmaa <mauri@inspiral.net>, database@FreeBSD.ORG Subject: Re: mysql (smp) performance Message-ID: <Pine.BSF.4.21.0101110111530.10168-100000@iclub.nsu.ru> In-Reply-To: <Pine.BSF.4.21.0101101352240.73423-100000@search.sparks.net>
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hi, there! On Wed, 10 Jan 2001, David Miller wrote: > > > > It seems that on SMP mysql doesn't scale well. (currently testing on > > > > dual 833 PIII and running on couple older dual systems) > > > > > > Because there is no such thing as SMP mysql. It is a single process, > > > and can only run on a single processor at a time. > > > > MySQL is heavily multithreaded and thus should take advantage of good SMP. > > Only if it likes the threads of the host, and if the host manages those > threads efficiently. I've "heard all around" that this is a poor area for > FreeBSD, but would love to hear from someone who can speak with firsthand > knowledge about freebsd threads and mysql. FreeBSD threads do not spread over CPUs -current will have better SMP and better threads implementation (but AFAIK it is not here yet) /fjoe To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-database" in the body of the message
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