Date: Sun, 21 Mar 2004 13:12:46 +0100 From: Andy Hilker <ah@crypta.net> To: Daniel Eischen <eischen@vigrid.com> Cc: current@freebsd.org Subject: Re: libpthread / mysql41-server Message-ID: <20040321121246.GB93532@mail.crypta.net> In-Reply-To: <Pine.GSO.4.10.10403202355130.23229-100000@pcnet5.pcnet.com> References: <20040321005423.GA48575@mail.crypta.net> <Pine.GSO.4.10.10403202355130.23229-100000@pcnet5.pcnet.com>
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Hi, > > It seems that i have a similar issue like > > > > http://lists.freebsd.org/pipermail/freebsd-threads/2004-February/001660.html > > > > But maybe it is not fixed or exists again. > > Bumping up thread sysctls or using libmap.conf are not better. mySQL > > becomes very unresponsive. > > Mysql uses scope system threads which are limited to > kern.threads.max_groups_per_proc. System scope threads > seem to have unfair scheduling also. Thats exactly, what i see. Installed port without options needs sometimes minutes to answer normal easy queries. mysqld processes is not killable (only by -9). With this libmap.conf it seems better. But no good comparison to formerly linuxthreads performance... [mysqld] libpthread.so.1 libc_r.so.5 libpthread.so libc_r.so [/usr/local/libexec/mysqld] libpthread.so.1 libc_r.so.5 libpthread.so libc_r.so I will test a few patches i received and see if it helps. Andy
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