== sanity test 101a: check read-ahead for random reads === 06:18:05 (1773656285) nreads: 10000 file size: 96MB 180.393159s, 2.89038MB/s osc.lustre-OST0000-osc-ffff8f34d82d6000.rpc_stats= snapshot_time: 1773656491.185179629 secs.nsecs start_time: 1773656287.593569218 secs.nsecs elapsed_time: 203.591610411 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 0 0 0 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 osc.lustre-OST0001-osc-ffff8f34d82d6000.rpc_stats= snapshot_time: 1773656491.189593803 secs.nsecs start_time: 1773656287.593604062 secs.nsecs elapsed_time: 203.595989741 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 2: 1 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 4032 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4035 100 100 | 97 97 97 2: 0 0 100 | 3 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 3 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 14 0 0 | 0 0 1 128: 20 0 1 | 0 0 1 256: 42 1 2 | 1 1 2 512: 89 2 4 | 2 2 4 1024: 160 3 8 | 4 4 8 2048: 356 8 17 | 8 8 16 4096: 675 16 33 | 16 16 32 8192: 1338 33 67 | 32 32 64 16384: 1329 32 100 | 36 36 100 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 1: 0 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 0 0 0 | 0 0 0 32: 0 0 0 | 0 0 0 64: 0 0 0 | 0 0 0 128: 0 0 0 | 0 0 0 256: 0 0 0 | 0 0 0 512: 0 0 0 | 0 0 0 1024: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 3 0 0 | 0 0 0 8192: 1239 30 30 | 0 0 0 16384: 2058 51 81 | 12 12 12 32768: 760 18 100 | 67 67 79 65536: 69 1 102 | 17 17 96 131072: 1 0 102 | 5 5 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 llite.lustre-ffff8f34d82d6000.read_ahead_stats= snapshot_time 1773656491.218134551 secs.nsecs start_time 1773656287.606436681 secs.nsecs elapsed_time 203.611697870 secs.nsecs hits 60480 samples [pages] misses 4035 samples [pages] readpage_not_consecutive 7951 samples [pages] zero_size_window 60480 samples [pages] failed_to_fast_read 4035 samples [pages] readahead_pages 4035 samples [pages] 1 15 60480