Date: Tue, 30 Mar 2004 22:52:01 +0200 From: des@des.no (Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?=) To: Robert Watson <rwatson@freebsd.org> Cc: current@freebsd.org Subject: Re: performance of jailed processes Message-ID: <xzpbrmerrbi.fsf@dwp.des.no> In-Reply-To: <Pine.NEB.3.96L.1040330153516.93169N-100000@fledge.watson.org> (Robert Watson's message of "Tue, 30 Mar 2004 15:36:57 -0500 (EST)") References: <Pine.NEB.3.96L.1040330153516.93169N-100000@fledge.watson.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Robert Watson <rwatson@freebsd.org> writes: > Somewhat more painful suggestion, but could you generate ktraces against a > mysql client doing the query inside and out of jail, then using whatever > flag sets relative timestamps on kdump, diff the two and see where the > substantial differences begin? I'll give it a shot tomorrow. > 13 seconds is too long for most of the potential things I have in mind... although the query only returns one row, it's a pretty big row, so 13 seconds could be explained by per-syscall or per-packet overhead. DES --=20 Dag-Erling Sm=F8rgrav - des@des.no
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?xzpbrmerrbi.fsf>