We use the same motherboards. And for some reason if you put 1 gig in them
exactly and then in the kernel under "Processor type/High Memory Support" we
set it to use 4 gig it locks up the machine every once in a while. We ended
up putting in 1.5 gig of ram and that seemed to fix it. If you didn't
compile in the 4 gig support Linux wouldn't recognize the full 1 gig of
memory for some reason. This is on a Redhat 7.1 machine with 2.4.x kernel's.
--- Brad Dameron Network Account Executive TSCNet Inc. www.tscnet.com Silverdale, WA. 1-888-8TSCNET> -----Original Message----- > From: linux-kernel-owner@vger.kernel.org > [mailto:linux-kernel-owner@vger.kernel.org]On Behalf Of Johan Ekenberg > Sent: Tuesday, December 11, 2001 3:30 PM > To: linux-kernel@vger.kernel.org > Subject: Lockups with 2.4.14 and 2.4.16 > > > We recently upgraded 10 servers from 2.2.19 to 2.4.14/2.4.16. Since then, > several servers have experienced severe lockups forcing hardware > resets. The > machines are Intel PIII (Dual) SMP running Epox motherboards. Here are the > details: > > ## The Story: > - Suddenly a machine gets a load average of about 500-1000. > - It's not possible to log in either at the console or by SSH. > - Some commands are possible to run through ssh from a remote > server, like: > "ssh badserver ps auxwf" or "ssh badserver free" > - Despite a system load of 1000, commands like "free", "ps" and "uptime" > often respond quickly, no "sluggishness". > - The locked up machine seems to use all available memory plus a > good deal > of swap > - The process table gets bigger and bigger, mainly ipop3d processes from > users trying to fetch mail but getting no reply. > - The processors seem to be mostly idle. > - Killing processes doesn't work, not even with SIGKILL. > - We haven't been able to find a time pattern for the lockups, or to > reproduce them at will. > - No kernel error messages are written to the console or logs. > - Ctrl-alt-delete produces a "Rebooting"-message on the console, > but there > is no actual reboot. Power cycling is the only way out. > - My not-so-professional guess is that the machine is locked up > waiting for > some disk i/o that never happens, either to swap or normal > filesystem. But, > I might be all wrong. > > ## Hardware: > - Dual PIII 850 on Epox BXB-S and Epox KP6-BS > - 1Gb RAM (4x256) > - Mylex AcceleRAID 352 PCI RAID Controller, > IBM disks, 3x36Gb Raid-5 mounted on / > and 2x18 Raid-1 mounted on /var/spool > - 1x20Gb IDE for /boot and swap (2 x 2Gb swap partitions) > - 1x36Gb IDE for backups > > ## Kernel: > - 2.4.14 and 2.4.16 > - Patched for reiserfs-quota with patches found at > ftp://ftp.suse.com/pub/people/mason/patches/reiserfs/quota-2.4/ > ( * 50_quota-patch > * dquota_deadlock > * nesting > * reiserfs-quota ) > - Complete kernel-config found here: > http://www.ekenberg.se/2.4-trouble/2.4.16-config > - Boot parameters are: "ether=0,0,eth1 panic=60 noapic" > > ## Filesystems: > - ReiserFS (3.6) except /boot which is ext2 > > ## General > - The servers are used mainly for: > * Apache/PHP with ~1000 VHosts > * Mail (Sendmail, imap, pop3) > * MySQL > > ## /etc/fstab: > /dev/rd/c0d0 / reiserfs > defaults,usrquota,noatime,notail 1 > 1 > /dev/rd/c0d1 /var/spool reiserfs > defaults,usrquota,noatime,notail 1 > 1 > /dev/hdb1 /hdb1 reiserfs defaults,noatime,notail 0 0 > /dev/hda1 /boot ext2 defaults 1 1 > /dev/hda2 swap swap defaults 0 0 > /dev/hda3 swap swap defaults 0 0 > none /dev/pts devpts gid=5,mode=620 0 0 > none /proc proc defaults 0 0 > > ## lspci: > 00:00.0 Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge > (rev 03) > 00:01.0 PCI bridge: Intel Corporation 440BX/ZX - 82443BX/ZX AGP > bridge (rev > 03) > 00:07.0 ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 02) > 00:07.1 IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 01) > 00:07.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01) > 00:07.3 Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 02) > 00:08.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] > (rev 30) > 00:09.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] > (rev 30) > 00:0a.0 PCI bridge: Intel Corporation: Unknown device 0964 (rev 02) > 00:0a.1 RAID bus controller: Mylex Corporation: Unknown device > 0050 (rev 02) > 00:0c.0 SCSI storage controller: Adaptec AHA-2940U2/W / 7890 > 01:00.0 VGA compatible controller: S3 Inc. 86c368 [Trio 3D/2X] (rev 02) > > > This is my first post to LKML, please forgive me if I forgot some relevant > info. > Please Cc: replies as I'm not subscribed to LKML. > > Best regards, > /Johan Ekenberg > > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
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This archive was generated by hypermail 2b29 : Sat Dec 15 2001 - 21:00:22 EST