Date: Sun, 21 Feb 1999 22:06:16 -0800 (PST) From: Tom <tom@uniserve.com> To: Daniel O'Connor <doconnor@gsoft.com.au> Cc: tcobb@staff.circle.net, stable@FreeBSD.ORG Subject: RE: SMP and libc_r Message-ID: <Pine.BSF.4.02A.9902212204430.17380-100000@shell.uniserve.ca> In-Reply-To: <XFMail.990222132556.doconnor@gsoft.com.au>
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On Mon, 22 Feb 1999, Daniel O'Connor wrote: > The SMP kernel spends more time in system locks over the entire kernel which is a bit > annoying. SMP works much better for things like multiple CPU intensive processes, it > works really badly on multiple IO intensive apps (because the all wait for the big kernel > lock) Yes, also be aware that MySQL has this problem with writing as well. Don't expect SMP to improve MySQL performance a lot if you do a lot of updates and inserts as MySQL only allows one process at a time to write to the database. > --- > Daniel O'Connor software and network engineer > for Genesis Software - http://www.gsoft.com.au > "The nice thing about standards is that there > are so many of them to choose from." > -- Andrew Tanenbaum Tom To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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