On Tue, Nov 23, 2010 at 11:24:49PM +1100, Nick Piggin wrote: > Hi, > > Running parallel fs_mark (0 size inodes, fsync on close) on a ramdisk > ends up with XFS in funny patterns. > > procs -----------memory---------- ---swap-- -----io---- -system-- > ----cpu---- > r b swpd free buff cache si so bi bo in cs us sy > id wa > 24 1 6576 166396 252 393676 132 140 16900 80666 21308 104333 1 84 14 1 > 21 0 6712 433856 256 387080 100 224 9152 53487 13677 53732 0 55 45 0 > 2 0 7068 463496 248 389100 0 364 2940 17896 4485 26122 0 33 65 2 > 1 0 7068 464340 248 388928 0 0 0 0 66 207 0 0 100 0 > 0 0 7068 464340 248 388928 0 0 0 0 79 200 0 0 100 0 > 0 0 7068 464544 248 388928 0 0 0 0 65 199 0 0 100 0 > 1 0 7068 464748 248 388928 0 0 0 0 79 201 0 0 100 0 > 0 0 7068 465064 248 388928 0 0 0 0 66 202 0 0 100 0 > 0 0 7068 465312 248 388928 0 0 0 0 80 200 0 0 100 0 > 0 0 7068 465500 248 388928 0 0 0 0 65 199 0 0 100 0 > 0 0 7068 465500 248 388928 0 0 0 0 80 202 0 0 100 0 > 1 0 7068 465500 248 388928 0 0 0 0 66 203 0 0 100 0 > 0 0 7068 465500 248 388928 0 0 0 0 79 200 0 0 100 0 > 23 0 7068 460332 248 388800 0 0 1416 8896 1981 7142 0 1 99 0 > 6 0 6968 360248 248 403736 56 0 15568 95171 19438 110825 1 79 21 0 > 23 0 6904 248736 248 419704 392 0 17412 118270 20208 111396 1 82 17 0 > 9 0 6884 266116 248 435904 128 0 14956 79756 18554 118020 1 76 23 0 > 0 0 6848 219640 248 445760 212 0 9932 51572 12622 76491 0 60 40 0 > > Got a dump of sleeping tasks. Any ideas? It is stuck waiting for log space to be freed up. Generally this is caused by log IO completion not occurring or an unflushable object preventing the tail from being moved forward. What: - kernel are you running? - is the time resolution of the above output? - is the output of mkfs.xfs? - are your mount options? - is the fs_mark command line? Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
