Re: performance of jailed processes

From: Martin Blapp <mb_at_imp.ch>
Date: Wed, 31 Mar 2004 10:00:14 +0200 (CEST)
Hi DES,

> 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.

Could you try the following things ? Use libthr or libpthreads for mysql and
see if the results are still the same. Do the same test with linux-threads
(all our mysqls on 4.x with jails use linux-threads and we don't see any
problems)

Martin
Received on Tue Mar 30 2004 - 22:00:22 UTC

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