== sanity test 101a: check read-ahead for random reads === 14:41:15 (1789065675) nreads: 10000 file size: 96MB 180.411544s, 3.18868MB/s osc.lustre-OST0000-osc-ffff9f98c4020800.rpc_stats= snapshot_time: 1789065875.231212270 secs.nsecs start_time: 1789065677.606423033 secs.nsecs elapsed_time: 197.624789237 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 0 0 2: 2 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 6 0 0 | 0 0 0 16: 4441 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 | 100 99 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4449 100 100 | 93 92 92 2: 0 0 100 | 8 7 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 2 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 14 0 0 | 0 0 1 128: 22 0 1 | 0 0 1 256: 46 1 2 | 1 0 2 512: 96 2 4 | 2 1 4 1024: 175 3 8 | 4 3 8 2048: 384 8 16 | 8 7 16 4096: 751 16 33 | 16 15 32 8192: 1484 33 67 | 32 31 64 16384: 1464 32 100 | 36 35 100 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: 34 0 0 | 0 0 0 8192: 1471 33 33 | 3 2 2 16384: 2229 50 83 | 31 30 33 32768: 762 17 101 | 63 62 96 65536: 57 1 102 | 4 3 100 131072: 0 0 102 | 1 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-ffff9f98c4020800.rpc_stats= snapshot_time: 1789065875.231387988 secs.nsecs start_time: 1789065677.606484008 secs.nsecs elapsed_time: 197.624903980 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 50 50 2: 0 0 0 | 0 0 50 4: 0 0 0 | 0 0 50 8: 0 0 0 | 1 50 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 50 50 32768: 0 0 0 | 1 50 100 llite.lustre-ffff9f98c4020800.read_ahead_stats= snapshot_time 1789065875.266672772 secs.nsecs start_time 1789065677.619878182 secs.nsecs elapsed_time 197.646794590 secs.nsecs hits 66629 samples [pages] misses 4449 samples [pages] readpage_not_consecutive 8773 samples [pages] zero_size_window 66629 samples [pages] failed_to_fast_read 4449 samples [pages] readahead_pages 4449 samples [pages] 1 15 66629