Date: Thu, 23 Jan 2003 13:39:10 -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: malloc.conf (was Re: Performance problems with 5.0-RELEASE) Message-ID: <20030123193910.GD54656@dan.emsphone.com> In-Reply-To: <20030123191446.GA2602@papagena.rockefeller.edu> References: <20030123123522.C9068-100000@alpha.yumyumyum.org> <20030123181628.GA2185@papagena.rockefeller.edu> <20030123185657.GB54656@dan.emsphone.com> <20030123191446.GA2602@papagena.rockefeller.edu>
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In the last episode (Jan 23), Rahul Siddharthan said: > Dan Nelson wrote: > > > # 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. > > Yes. > > > R is on > > by default in 5.0 anyway, due to A and J being on by default. > > That's not what the malloc(3) man page suggests -- R seems to have > nothing to do with A or J. Perhaps, however, the improvement I see > is due to turning off A and J (implicitly, ie by not specifying them)? The description for J says "This options also sets the R option" (heh. found a typo :), and inside malloc.c, the internal flags representing A and J are set to 1. Not specifying [aA] or [jJ] leaves them at the defaults, so they should still be enabled if you have "HR<" set. -- 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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