Dustin J. Mitchell wrote: > On Mon, Aug 31, 2009 at 11:51 PM, Tom Robinson<tom.robin...@motec.com.au> > wrote: > >> While the disk is reaching saturation (and recovering quickly) I'm >> thinking that the all the retransmissions would be slowing things down more. >> >> I don't see any errors on the client interface but there are four on the >> server interface over the last four days. >> > > Hmm, the causation may be going the other way -- if the disk is > generating too many IRQs for the CPU to handle, then network packets > might get dropped. Alternately, perhaps the PCI bus is maxed out? > Anyway, this sounds like a problem local to the client. Is there a > way to slow down the disk IO so that it doesn't wedge the machine? > Thanks Dustin,
I've found that our very old (RH7.1 seawolf), running a very old kernel (2.4.20) has a bug in the ide driver. I can't say categorically that this is the root cause of the dump issue I saw but, finally, I've got permission to move forward with a planned upgrade that I've been pushing for some time now. For those that are interested, I suspect this is the problem: https://bugzilla.redhat.com/show_bug.cgi?id=134579 Thanks for all the help Regards, Tom -- Tom Robinson System Administrator MoTeC 121 Merrindale Drive Croydon South 3136 Victoria Australia T: +61 3 9761 5050 F: +61 3 9761 5051 M: +61 4 3268 7026 E: tom.robin...@motec.com.au
