== sanity test 101a: check read-ahead for random reads === 20:44:44 (1787100284) nreads: 10000 file size: 96MB 180.275761s, 2.1801MB/s osc.lustre-OST0000-osc-ffff948140180000.rpc_stats= snapshot_time: 1787100491.230410588 secs.nsecs start_time: 1787100287.368514529 secs.nsecs elapsed_time: 203.861896059 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 | 1 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 1 100 100 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: 0 0 0 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 1 100 100 osc.lustre-OST0001-osc-ffff948140180000.rpc_stats= snapshot_time: 1787100491.231119925 secs.nsecs start_time: 1787100287.368542146 secs.nsecs elapsed_time: 203.862577779 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: 2 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 3906 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: 3909 99 99 | 25 100 100 2: 1 0 100 | 0 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 3 0 0 | 0 0 4 32: 6 0 0 | 0 0 4 64: 11 0 0 | 0 0 4 128: 18 0 1 | 0 0 4 256: 39 0 2 | 0 0 4 512: 83 2 4 | 0 0 4 1024: 148 3 7 | 1 4 8 2048: 337 8 16 | 2 8 16 4096: 641 16 32 | 4 16 32 8192: 1269 32 65 | 8 32 64 16384: 1351 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: 165 4 4 | 0 0 0 8192: 1293 33 37 | 0 0 0 16384: 1677 42 80 | 0 0 0 32768: 755 19 99 | 1 4 4 65536: 105 2 102 | 21 84 88 131072: 5 0 102 | 3 12 100 262144: 1 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 llite.lustre-ffff948140180000.read_ahead_stats= snapshot_time 1787100491.265144239 secs.nsecs start_time 1787100287.397708651 secs.nsecs elapsed_time 203.867435588 secs.nsecs hits 58585 samples [pages] misses 3910 samples [pages] readpage_not_consecutive 5994 samples [pages] zero_size_window 58585 samples [pages] failed_to_fast_read 3910 samples [pages] readahead_pages 3910 samples [pages] 1 15 58585