== sanity test 101a: check read-ahead for random reads === 17:21:32 (1781212892) nreads: 10000 file size: 96MB 180.438395s, 2.47015MB/s osc.lustre-OST0000-osc-ffff9d37430d5800.rpc_stats= snapshot_time: 1781213099.247326234 secs.nsecs start_time: 1781212894.492597349 secs.nsecs elapsed_time: 204.754728885 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: 0 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 4451 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 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4453 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 4 0 0 | 0 0 4 32: 6 0 0 | 0 0 4 64: 12 0 0 | 0 0 4 128: 21 0 1 | 0 0 4 256: 43 0 2 | 0 0 4 512: 94 2 4 | 0 0 4 1024: 169 3 7 | 1 4 8 2048: 387 8 16 | 2 8 16 4096: 738 16 33 | 4 16 32 8192: 1451 32 65 | 8 32 64 16384: 1523 34 100 | 9 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: 67 1 1 | 0 0 0 8192: 1699 38 39 | 0 0 0 16384: 1990 44 84 | 0 0 0 32768: 746 16 101 | 0 0 0 65536: 55 1 102 | 20 80 80 131072: 0 0 102 | 5 20 100 262144: 0 0 102 | 0 0 100 524288: 0 0 102 | 0 0 100 1048576: 0 0 102 | 0 0 100 2097152: 0 0 102 | 0 0 100 4194304: 0 0 102 | 0 0 100 8388608: 0 0 102 | 0 0 100 16777216: 0 0 102 | 0 0 100 33554432: 0 0 102 | 0 0 100 67108864: 0 0 102 | 0 0 100 134217728: 0 0 102 | 0 0 100 268435456: 0 0 102 | 0 0 100 536870912: 0 0 102 | 0 0 100 1073741824: 0 0 102 | 0 0 100 osc.lustre-OST0001-osc-ffff9d37430d5800.rpc_stats= snapshot_time: 1781213099.247471937 secs.nsecs start_time: 1781212894.492644513 secs.nsecs elapsed_time: 204.754827424 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 llite.lustre-ffff9d37430d5800.read_ahead_stats= snapshot_time 1781213099.278211985 secs.nsecs start_time 1781212894.523647071 secs.nsecs elapsed_time 204.754564914 secs.nsecs hits 66746 samples [pages] misses 4453 samples [pages] readpage_not_consecutive 6797 samples [pages] zero_size_window 66746 samples [pages] failed_to_fast_read 4453 samples [pages] readahead_pages 4453 samples [pages] 2 15 66746