FreeBSD 5.3 SMP freezes with MySQL 4.1

Young Lee ncisoft at
Wed Mar 30 01:08:59 PST 2005

the system is totally dead with the pannic message, and have=20
to hard reset to reboot. even i reboot the server, it will crash in=20
several minutes, because of hundreds of request is coming.

by refer to Klein's configuration and turn "debug.mpsafenet=3D0"=20
in /boot/loader.conf, the server is stable so far, and it last 20 hours.

Young Lee

On Tue, 29 Mar 2005 21:01:51 -0800 (PST)
Doug White <dwhite at> wrote:
> On Tue, 29 Mar 2005, [GB2312] =C0=EE=D2=E3=B8=D5 wrote:
> > Hi,
> >
> > I have a dell pe2650 box with dual xeon 2.4G, disabled the HTT,
> > installed 5.3-RELEASE, enabled SMP, mysql 4.1.10a built from
> > the port.
> >
> > If the mysql connections is high (e.g. over 100 connections),
> > the system will freezes in several minutes, and the fatal alway
> > indicated to the mysqld process. When I build the kernel without
> > SMP, the system is stable. I have try 5.3-p5 and 5.4-PRE, the
> > problem is still there.
> >
> > It's my configuration mistake or will be solved in 5.4-RELEASE ?
> There's just not enough information to tell. When you say "freeze", is th=
> machine totally unresponsive, or does the console allow you to type
> characters? Can you ping the system when it appears frozen? Does the
> system eventually recover if the load is taken away?
> --=20
> Doug White                    |  FreeBSD: The Power to Serve
> dwhite at          |

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