Messages in this thread |  | | Date | Tue, 07 Jan 2003 18:42:27 -0600 | From | Brian Tinsley <> | Subject | long stalls |
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We have been having terrible problems with long stalls, meaning from a couple of minutes to an hour, happening when filesystem I/O load gets high. The system time as reported by vmstat or sar will increase up to 99% and as it spreads to each procesor, the system becomes completely unresponsive (except that it responds to pings just fine - interesting!). When the system finally returns to the world of the living, the only evidence that something bad has happened is the runtime for kswapd is abnormally high. I have seen this happen with the stock 2.4.17, 2.4.19, and 2.4.20 kernels on SMP PIII and PIV machines (either 4GB or 8GB RAM, all SCSI disks, dual GigE NICs). I've searched the lkml archives and google and have found several similar postings, but there is never an explanation or resolution. Any help would be *very* much appreciated! If any info from the system in question is desired, I will be glad to provide it.
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-[========================]- -[ Brian Tinsley ]- -[ Chief Systems Engineer ]- -[ Emageon ]- -[========================]-
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