Date: Wed, 31 Mar 2004 18:21:29 +0200 From: Bernd Walter <ticso@cicely12.cicely.de> To: Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?= <des@des.no> Cc: current@freebsd.org Subject: Re: performance of jailed processes Message-ID: <20040331162128.GW32646@cicely12.cicely.de> In-Reply-To: <xzpisgm46h7.fsf@dwp.des.no> References: <xzpisgm46h7.fsf@dwp.des.no>
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On Tue, Mar 30, 2004 at 06:58:28PM +0200, Dag-Erling Smørgrav wrote: > Can anyone explain why jailed processes seem to perform much worse > than non-jailed processes in recent -CURRENT? > > Specifically, running a query against a remote MySQL server from > inside a jail takes an order of magnitude more time than from outside > the jail. Tcpdump shows that the TCP packets carrying the result are > evenly spaced, so this is not a matter of the server timing out on a > DNS lookup or anything like that. > > Running a configure script also takes much longer inside the jail than > outisde, and again, progress is even (though slow), so it is clearly > not a matter of DNS timing out. Do the jails all have the same malloc.conf as the base system? -- B.Walter BWCT http://www.bwct.de ticso@bwct.de info@bwct.de
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