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. -- Nathan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
