== sanity test 101a: check read-ahead for random reads === 13:54:30 (1788890070) nreads: 10000 file size: 96MB 57.740804s, 11.35MB/s osc.lustre-OST0000-osc-ffff975031cbc000.rpc_stats= snapshot_time: 1788890138.973883220 secs.nsecs start_time: 1788890070.875549421 secs.nsecs elapsed_time: 68.098333799 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: 7 0 0 | 2 7 7 2: 0 0 0 | 0 0 7 4: 1 0 0 | 0 0 7 8: 8 0 0 | 0 0 7 16: 6386 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6402 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 5 0 0 | 0 0 11 32: 8 0 0 | 0 0 11 64: 19 0 0 | 0 0 11 128: 29 0 1 | 0 0 11 256: 68 1 2 | 0 0 11 512: 134 2 4 | 0 0 11 1024: 270 4 8 | 1 3 14 2048: 554 8 17 | 2 7 22 4096: 1092 17 34 | 4 14 37 8192: 2148 33 67 | 8 29 66 16384: 2070 32 100 | 9 33 100 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: 8 0 0 | 0 0 0 2048: 6332 98 99 | 0 0 0 4096: 208 3 102 | 0 0 0 8192: 6 0 102 | 5 18 18 16384: 0 0 102 | 18 66 85 32768: 0 0 102 | 4 14 100 65536: 0 0 102 | 0 0 100 131072: 0 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 osc.lustre-OST0001-osc-ffff975031cbc000.rpc_stats= snapshot_time: 1788890138.973981729 secs.nsecs start_time: 1788890070.875599693 secs.nsecs elapsed_time: 68.098382036 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 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 33 33 2: 0 0 0 | 1 33 66 3: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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 | 3 100 100 llite.lustre-ffff975031cbc000.read_ahead_stats= snapshot_time 1788890138.978672879 secs.nsecs start_time 1788890070.882501816 secs.nsecs elapsed_time 68.096171063 secs.nsecs hits 95781 samples [pages] misses 6402 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 95788 samples [pages] failed_to_fast_read 6402 samples [pages] readahead_pages 6395 samples [pages] 3 15 95781