Date: Thu, 23 Jan 2003 12:56:57 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: Rahul Siddharthan <rsidd@online.fr> Cc: Kenneth Culver <culverk@yumyumyum.org>, Atte Peltomaki <atte.peltomaki@iki.fi>, freebsd-current@FreeBSD.ORG Subject: Re: Performance problems with 5.0-RELEASE Message-ID: <20030123185657.GB54656@dan.emsphone.com> In-Reply-To: <20030123181628.GA2185@papagena.rockefeller.edu> References: <20030123123522.C9068-100000@alpha.yumyumyum.org> <20030123181628.GA2185@papagena.rockefeller.edu>
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In the last episode (Jan 23), Rahul Siddharthan said: > Kenneth Culver wrote: > > Did you by any chance build your own kernel? If so did you leave > > things like this in: > > > > options INVARIANTS #Enable calls of extra sanity > > options INVARIANT_SUPPORT #Extra sanity checks of internal > > options WITNESS #Enable checks to detect deadlocks > > options WITNESS_SKIPSPIN #Don't run witness on spinlocks > > I'd like to add that even with these removed, I was experiencing > terrible performance in building ports, etc (anything involving heavy > filesystem activity or memory usage). Setting up an /etc/malloc.conf > fixed this (this is also briefly noted in UPDATING). Specifically I > use (don't know whether it's optimal, but it works): > > # ls -l /etc/malloc.conf > lrwxr-xr-x 1 root wheel 4 Jan 23 11:52 /etc/malloc.conf -> HR< H and < should only make a difference if you are low on memory. R is on by default in 5.0 anyway, due to A and J being on by default. Setting malloc.conf to "aj" makes it work like it does in 4.*. -- Dan Nelson dnelson@allantgroup.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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