Date: Thu, 10 Apr 2003 11:19:51 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: Aleksandr Melentiev <tzap@pacbell.net> Cc: freebsd-smp@freebsd.org Subject: Re: System freezes with SMP support enabled Message-ID: <XFMail.20030410111951.jhb@FreeBSD.org> In-Reply-To: <001b01c2fee3$16e1e710$0300a8c0@kronos>
next in thread | previous in thread | raw e-mail | index | archive | help
On 09-Apr-2003 Aleksandr Melentiev wrote: > Here's an exact behavior when SMP support is enabled: > > Hence, one network card is onboard which is an fxp0. > > 5.0-RELEASE: > Often spontaneous and constant 'watchdog timeouts' with different network > cards that I have tried including SMC 1255 and 3Com 3C905-TX. An Intel > Pro/100+ showed 'device timeout'. In all cases, system would stop > responding. In most cases network connection would dissapear. Sometimes it > would happen again on the first second after reboot. Onboard network card > didnt show any errors! Only the PCI cards did. Can you reproduce this and provide the output of 'vmstat -i'? > 4.8-RELEASE: > Same behavior as above, only no error messages whatsoever, network > connection goes down and system locks up. It is not spontaneous, happens > only when I try to transfer >1MB files locally via ftp (tried several > different ftpd and clients too), maybe other ways of high-speed transfering > are affected too. However, if I throttle my ftp client's upload speed to > 15KBytes/sec, it transfers without a problem and systems stays stable. > > None of the above happens when SMP support is disabled. > I am attaching dmesg where SMP support is enabled. Might it be because of > the PCI bridge? I doubt it has anything to do with PCI. It sounds like you are losing clock interrupts or some other nastiness. One thing you can try is to comment out the GRAB_LOPRIO #define in sys/i386/include/smptests.h. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?XFMail.20030410111951.jhb>