== sanity test 101a: check read-ahead for random reads === 20:51:06 (1773103866) nreads: 10000 file size: 96MB 87.444273s, 7.4946MB/s osc.lustre-OST0000-osc-ffff8d3e89dc9800.rpc_stats= snapshot_time: 1773103966.631561759 secs.nsecs start_time: 1773103867.582818418 secs.nsecs elapsed_time: 99.048743341 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-ffff8d3e89dc9800.rpc_stats= snapshot_time: 1773103966.631633254 secs.nsecs start_time: 1773103867.583072125 secs.nsecs elapsed_time: 99.048561129 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: 3 0 0 | 0 0 0 4: 5 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 6489 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: 6501 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: 5 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 19 0 0 | 0 0 4 128: 31 0 1 | 0 0 4 256: 72 1 2 | 0 0 4 512: 134 2 4 | 0 0 4 1024: 257 3 8 | 1 4 8 2048: 549 8 16 | 2 8 16 4096: 1073 16 33 | 4 16 32 8192: 2158 33 66 | 8 32 64 16384: 2189 33 100 | 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: 833 12 12 | 0 0 0 4096: 5317 81 94 | 0 0 0 8192: 500 7 102 | 0 0 0 16384: 5 0 102 | 9 36 36 32768: 0 0 102 | 16 64 100 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 llite.lustre-ffff8d3e89dc9800.read_ahead_stats= snapshot_time 1773103966.639853934 secs.nsecs start_time 1773103867.591488435 secs.nsecs elapsed_time 99.048365499 secs.nsecs hits 97323 samples [pages] misses 6501 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97324 samples [pages] failed_to_fast_read 6501 samples [pages] readahead_pages 6500 samples [pages] 1 15 97323