== sanity test 101a: check read-ahead for random reads === 21:05:12 (1783645512) nreads: 10000 file size: 96MB 54.915069s, 11.9341MB/s osc.lustre-OST0000-osc-ffff88c3457bd000.rpc_stats= snapshot_time: 1783645580.440929234 secs.nsecs start_time: 1783645513.185554337 secs.nsecs elapsed_time: 67.255374897 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 3 3 2: 2 0 0 | 0 0 3 4: 1 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 6392 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6395 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 6 0 0 | 0 0 7 32: 7 0 0 | 0 0 7 64: 22 0 0 | 0 0 7 128: 33 0 1 | 0 0 7 256: 73 1 2 | 0 0 7 512: 135 2 4 | 0 0 7 1024: 269 4 8 | 1 3 11 2048: 559 8 17 | 2 7 19 4096: 1102 17 34 | 4 15 34 8192: 2163 33 68 | 8 30 65 16384: 2021 31 100 | 9 34 100 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: 100 1 1 | 0 0 0 2048: 6063 94 96 | 0 0 0 4096: 370 5 102 | 1 3 3 8192: 14 0 102 | 9 34 38 16384: 0 0 102 | 15 57 96 32768: 0 0 102 | 1 3 100 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-ffff88c3457bd000.rpc_stats= snapshot_time: 1783645580.441021544 secs.nsecs start_time: 1783645513.185584453 secs.nsecs elapsed_time: 67.255437091 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 25 25 2: 0 0 0 | 1 25 50 3: 0 0 0 | 1 25 75 4: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 1 25 25 4096: 0 0 0 | 2 50 75 8192: 0 0 0 | 1 25 100 llite.lustre-ffff88c3457bd000.read_ahead_stats= snapshot_time 1783645580.445293142 secs.nsecs start_time 1783645513.193116931 secs.nsecs elapsed_time 67.252176211 secs.nsecs hits 95864 samples [pages] misses 6395 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 95864 samples [pages] failed_to_fast_read 6395 samples [pages] readahead_pages 6395 samples [pages] 1 15 95864