Messages in this thread | | | Date | Tue, 07 Jan 2003 20:51:53 -0500 | From | Russell Leighton <> | Subject | Re: long stalls |
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I can't help, but I can echo a "me too".
We only see it when I have 2 file I/O intensive processes...they both will just stop for some few seconds, system seems idle...then they just start again. RH7.3 SMP, Dual PIII, 4GB RAM, 3com RAID Controller .
Brian Tinsley wrote:
> 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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