performance of jailed processes

[Martin Blapp]

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