Re: performance of jailed processes

From: Bernd Walter (ticso_at_cicely12.cicely.de)
Date: 03/31/04

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    Date: Wed, 31 Mar 2004 18:21:29 +0200
To: Dag-Erling Smørgrav <des@des.no>

    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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