== sanity test 101a: check read-ahead for random reads === 00:22:30 (1788754950) nreads: 10000 file size: 96MB 180.993325s, 2.76818MB/s osc.lustre-OST0000-osc-ffff9f5f924b9000.rpc_stats= snapshot_time: 1788755152.108182237 secs.nsecs start_time: 1788754952.678398843 secs.nsecs elapsed_time: 199.429783394 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: 1 0 0 | 0 0 0 2: 1 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 5067 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: 5074 100 100 | 25 100 100 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: 5 0 0 | 0 0 4 32: 6 0 0 | 0 0 4 64: 16 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 52 1 2 | 0 0 4 512: 109 2 4 | 0 0 4 1024: 194 3 8 | 1 4 8 2048: 436 8 16 | 2 8 16 4096: 849 16 33 | 4 16 32 8192: 1649 32 65 | 8 32 64 16384: 1731 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: 311 6 6 | 0 0 0 8192: 2287 45 51 | 0 0 0 16384: 1982 39 90 | 0 0 0 32768: 571 11 101 | 7 28 28 65536: 43 0 102 | 13 52 80 131072: 0 0 102 | 4 16 96 262144: 0 0 102 | 1 4 100 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-ffff9f5f924b9000.rpc_stats= snapshot_time: 1788755152.108326974 secs.nsecs start_time: 1788754952.678430097 secs.nsecs elapsed_time: 199.429896877 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-ffff9f5f924b9000.read_ahead_stats= snapshot_time 1788755152.143908672 secs.nsecs start_time 1788754952.718659554 secs.nsecs elapsed_time 199.425249118 secs.nsecs hits 76000 samples [pages] misses 5074 samples [pages] readpage_not_consecutive 7641 samples [pages] zero_size_window 76000 samples [pages] failed_to_fast_read 5074 samples [pages] readahead_pages 5073 samples [pages] 1 15 76000