Messages in this thread | | | Date | Tue, 15 Feb 2005 13:26:18 +1100 | From | Nathan Scott <> | Subject | Re: Repeatable hang with XFS under 2.6.11-rc4 |
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Hi Peter,
On Tue, Feb 15, 2005 at 12:49:45PM +1100, Peter Chubb wrote: > Running Reaim-7 on a 4G ram disk with 4 processors on > Itanium... Every few runs, as the multiprocessing level increases, we > see 22 processes hung in sync(), all except one waiting in > sync_filesystems() and that one waiting in pagebuf_iowait().
That would indicate either XFS dropped the IO completion for a metadata buffer, or the driver didn't pass it back to us. Hard to say which; is this with default mkfs options? If so, try using -ssize=4k at mkfs time, that'll get rid of some of the more unusual IO patterns which XFS can send down. Also try a blocksize the same as the pagesize (16K there I would guess). If the behaviour changes, these'll give us pointers and help isolate where the problem is.
cheers.
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