MySQL 4.1 SIGBUS failiure with FreeBSD 6.0

Justin Bastedo justin.bastedo at
Thu Mar 23 08:19:32 UTC 2006

There was also this thread on ther freebsd-database list a while back.

couldn't search through the actual freebsd site for some reason but
google found it.

There the author said dropping back down to 4.11 seemed to solve the
problem. I am running a MySQL 5 server on a dual, dualcore amd 64
system with a max queries persecond i think we hit was in the 200 -
300 range. If I remember back to the conversations then, I think the
problem started to surface at about 500 or so queries persecond. I
haven't had any problems with MySQL 5 and I really think its worth the
step up. It seems some people at MySQL looked into the problem for
that thread I linked to but i don't know if any type of solution was
found on the MySQL side. It just seems the 4.x doesn't like the high
loads on FreeBSD for some reason.

On 3/22/06, Kurt Jaeger <lists at> wrote:
> Hi!

Justin Bastedo At Gmail Dot Com

> On Wed, Mar 22, 2006 at 03:51:10PM -0600, Glenn Nielsen wrote:
> > MySQL 4.1 SIGBUS failiure with FreeBSD 6.0
> [...]
> > (gdb) bt
> > #0  0x285292b7 in pthread_testcancel () from /usr/lib/
> > #1  0x285190a2 in sigaction () from /usr/lib/
> > #2  0x2851318d in pthread_kill () from /usr/lib/
> [...]
> > We are using mysql-server-4.1.18_2 from ports with native threads.

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