== sanity test 101a: check read-ahead for random reads === 04:00:19 (1773734419) nreads: 10000 file size: 96MB 180.968558s, 2.66789MB/s osc.lustre-OST0000-osc-ffff92c5d2f66800.rpc_stats= snapshot_time: 1773734626.079893828 secs.nsecs start_time: 1773734421.695410619 secs.nsecs elapsed_time: 204.384483209 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 | 2 100 100 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 | 2 100 100 osc.lustre-OST0001-osc-ffff92c5d2f66800.rpc_stats= snapshot_time: 1773734626.079978628 secs.nsecs start_time: 1773734421.695444918 secs.nsecs elapsed_time: 204.384533710 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 | 2 7 7 2: 1 0 0 | 0 0 7 4: 2 0 0 | 0 0 7 8: 4 0 0 | 1 3 10 16: 4832 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4840 100 100 | 27 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 4 0 0 | 0 0 14 32: 7 0 0 | 0 0 14 64: 12 0 0 | 0 0 14 128: 21 0 1 | 0 0 14 256: 49 1 2 | 0 0 14 512: 103 2 4 | 0 0 14 1024: 181 3 7 | 1 3 17 2048: 422 8 16 | 2 7 25 4096: 798 16 33 | 4 14 39 8192: 1578 32 65 | 8 28 67 16384: 1660 34 100 | 9 32 100 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: 180 3 3 | 0 0 0 8192: 2122 43 47 | 1 3 3 16384: 1972 40 88 | 1 3 7 32768: 617 12 101 | 3 10 17 65536: 63 1 102 | 13 46 64 131072: 0 0 102 | 10 35 100 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-ffff92c5d2f66800.read_ahead_stats= snapshot_time 1773734626.098386860 secs.nsecs start_time 1773734421.725632007 secs.nsecs elapsed_time 204.372754853 secs.nsecs hits 72476 samples [pages] misses 4840 samples [pages] readpage_not_consecutive 7363 samples [pages] zero_size_window 72477 samples [pages] failed_to_fast_read 4840 samples [pages] readahead_pages 4839 samples [pages] 1 15 72476