Hi Steve, I'm no help either, but for the record, I've seen this logged a few times on our Dell 4300 dual p3. We had been running fine for 10 months on rh6.2 and 1gig ram, and we upgraded to 7.1 and to 3gig ram. The message occurs every week or so, but the machine works normally. We run a fair amount of java/apache tomcat stuff fwiw, but probably don't really use all 3 gig at the moment. If we did I bet we'd lock up too.
Some digging on Google turns up some discussion of the problem: http://lwn.net/2001/0531/kernel.php3 and http://lwn.net/2001/0607/kernel.php3 (apologies if this is nothing new to you) I think a new kernel is needed (2.4.10 is supposed to have a nice new vm subsystem), but I'm not brave enough, or needy enough, to mess with it for now. Reducing the amount of physical ram might be a workaround, but not a viable one ;) Robert Grunloh University of Arizona Library On Wed, 17 Oct 2001 [EMAIL PROTECTED] wrote: > > > Hi, > > I'm responsible for looking after a couple of machines that > run some fairly large statistical analysis jobs. > > One machine (Dell PowerEdge 6300, quad Pentium III, 4GB RAM, RH-7.1) > does most of the processing, often running jobs as large as 1.8GB/process. > > Since upgrading to RH-7.1, the machine occasionally runs out of resources. > This seems to happen while our backup is running (we use BRU to backup to > a DDS-4). > > I can ping the machine but cannot log in and a hard reset is needed. > > Before the reset, I usually see messages like this on the console: > > (scsi2:A:6): 20.000MB/s transfers (20.000MHz, offset 15) > st0: Block limits 1 - 16777215 bytes. > mm: critical shortage of bounce buffers. > (scsi1:A:1:0): Locking max tag count at 64 > (scsi1:A:3:0): Locking max tag count at 64 > > Sometimes there are references to killed jobs because of lack of resources. > > The SCSI controller for the disks is an Adaptec aic7890/91 Ultra2. > The tape drive uses an Adaptec aic7860 SCSI adapter. > > The reference to: mm: critical shortage of bounce buffers > can be found in mm/highmem.c. > > The strange thing is, at no point does swap seem to get used, no matter how > heavily loaded the machine is. > > If anyone can shed some light on this it would be much appreciated. > > ------------------------------------- > > Steve Batson > System Administrator > Victorian Institute of Animal Science > Victoria, Australia > Email: [EMAIL PROTECTED] > > -------------------------------------- > > > > > _______________________________________________ > Seawolf-list mailing list > [EMAIL PROTECTED] > https://listman.redhat.com/mailman/listinfo/seawolf-list > _______________________________________________ Seawolf-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/seawolf-list
