== sanity test 101a: check read-ahead for random reads === 04:52:55 (1788511975) nreads: 10000 file size: 96MB 180.593435s, 2.94923MB/s osc.lustre-OST0000-osc-ffff980f9126c800.rpc_stats= snapshot_time: 1788512174.105278269 secs.nsecs start_time: 1788511977.545353647 secs.nsecs elapsed_time: 196.559924622 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-ffff980f9126c800.rpc_stats= snapshot_time: 1788512174.105350867 secs.nsecs start_time: 1788511977.545379438 secs.nsecs elapsed_time: 196.559971429 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: 7 0 0 | 0 0 0 8: 6 0 0 | 0 0 0 16: 5307 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: 5320 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 7 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 55 1 2 | 0 0 4 512: 114 2 4 | 0 0 4 1024: 198 3 7 | 1 4 8 2048: 459 8 16 | 2 8 16 4096: 877 16 33 | 4 16 32 8192: 1733 32 65 | 8 32 64 16384: 1829 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: 211 3 3 | 0 0 0 8192: 2615 49 53 | 0 0 0 16384: 2138 40 93 | 0 0 0 32768: 449 8 101 | 3 12 12 65536: 31 0 102 | 22 88 100 131072: 1 0 102 | 0 0 100 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 llite.lustre-ffff980f9126c800.read_ahead_stats= snapshot_time 1788512174.116660219 secs.nsecs start_time 1788511977.576336428 secs.nsecs elapsed_time 196.540323791 secs.nsecs hits 79619 samples [pages] misses 5320 samples [pages] readpage_not_consecutive 8122 samples [pages] zero_size_window 79619 samples [pages] failed_to_fast_read 5320 samples [pages] readahead_pages 5320 samples [pages] 2 15 79619