== sanity test 101a: check read-ahead for random reads === 03:21:57 (1782631317) nreads: 10000 file size: 96MB 56.741021s, 11.55MB/s osc.lustre-OST0000-osc-ffff97a1853eb000.rpc_stats= snapshot_time: 1782631388.503981944 secs.nsecs start_time: 1782631317.845987793 secs.nsecs elapsed_time: 70.657994151 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 | 3 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 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 | 3 100 100 osc.lustre-OST0001-osc-ffff97a1853eb000.rpc_stats= snapshot_time: 1782631388.504053907 secs.nsecs start_time: 1782631317.846023931 secs.nsecs elapsed_time: 70.658029976 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: 0 0 0 | 0 0 3 4: 3 0 0 | 0 0 3 8: 2 0 0 | 1 3 7 16: 6405 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: 6410 100 100 | 27 100 100 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: 6 0 0 | 0 0 11 32: 7 0 0 | 0 0 11 64: 21 0 0 | 0 0 11 128: 34 0 1 | 0 0 11 256: 68 1 2 | 0 0 11 512: 132 2 4 | 0 0 11 1024: 262 4 8 | 1 3 14 2048: 563 8 17 | 2 7 22 4096: 1093 17 34 | 4 14 37 8192: 2198 34 68 | 8 29 66 16384: 2021 31 100 | 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: 9 0 0 | 0 0 0 2048: 6221 97 97 | 1 3 3 4096: 328 5 102 | 1 3 7 8192: 4 0 102 | 8 29 37 16384: 0 0 102 | 17 62 100 32768: 0 0 102 | 0 0 100 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-ffff97a1853eb000.read_ahead_stats= snapshot_time 1782631388.508246382 secs.nsecs start_time 1782631317.853060658 secs.nsecs elapsed_time 70.655185724 secs.nsecs hits 96066 samples [pages] misses 6410 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 96066 samples [pages] failed_to_fast_read 6410 samples [pages] readahead_pages 6410 samples [pages] 2 15 96066