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To: Robert Watson <rwatson@freebsd.org>
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From: des@des.no (Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?=)
Date: Tue, 30 Mar 2004 22:52:01 +0200
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	(Robert Watson's message of "Tue, 30 Mar 2004 15:36:57 -0500 (EST)")
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cc: current@freebsd.org
Subject: Re: performance of jailed processes
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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
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Dag-Erling Sm=F8rgrav - des@des.no