== sanity test 101a: check read-ahead for random reads === 18:58:35 (1788562715) nreads: 10000 file size: 96MB 180.129281s, 3.33375MB/s osc.lustre-OST0000-osc-ffff9fba07da4000.rpc_stats= snapshot_time: 1788562918.108439555 secs.nsecs start_time: 1788562717.295209149 secs.nsecs elapsed_time: 200.813230406 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: 2 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 6028 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 | 1 3 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6035 100 100 | 24 92 92 2: 0 0 100 | 2 7 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 5 0 0 | 0 0 3 32: 7 0 0 | 0 0 3 64: 20 0 0 | 0 0 3 128: 30 0 1 | 0 0 3 256: 62 1 2 | 0 0 3 512: 130 2 4 | 0 0 3 1024: 209 3 7 | 2 7 11 2048: 512 8 16 | 2 7 19 4096: 999 16 32 | 4 15 34 8192: 1975 32 65 | 8 30 65 16384: 2083 34 100 | 9 34 100 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: 1 0 0 | 0 0 0 4096: 762 12 12 | 0 0 0 8192: 3252 53 66 | 0 0 0 16384: 1738 28 95 | 0 0 0 32768: 395 6 101 | 6 23 23 65536: 29 0 102 | 18 69 92 131072: 0 0 102 | 2 7 100 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-ffff9fba07da4000.rpc_stats= snapshot_time: 1788562918.109351067 secs.nsecs start_time: 1788562717.295239550 secs.nsecs elapsed_time: 200.814111517 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-ffff9fba07da4000.read_ahead_stats= snapshot_time 1788562918.150609621 secs.nsecs start_time 1788562717.325553861 secs.nsecs elapsed_time 200.825055760 secs.nsecs hits 90432 samples [pages] misses 6035 samples [pages] readpage_not_consecutive 9158 samples [pages] zero_size_window 90432 samples [pages] failed_to_fast_read 6035 samples [pages] readahead_pages 6035 samples [pages] 1 15 90432