== sanity test 101a: check read-ahead for random reads === 19:43:31 (1788565411) nreads: 10000 file size: 96MB 180.299256s, 2.95549MB/s osc.lustre-OST0000-osc-ffff90f5c8ce0800.rpc_stats= snapshot_time: 1788565611.119273702 secs.nsecs start_time: 1788565413.729000499 secs.nsecs elapsed_time: 197.390273203 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: 5 0 0 | 0 0 3 8: 5 0 0 | 0 0 3 16: 5323 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: 5333 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 4 0 0 | 0 0 7 32: 7 0 0 | 0 0 7 64: 15 0 0 | 0 0 7 128: 23 0 1 | 0 0 7 256: 55 1 2 | 0 0 7 512: 115 2 4 | 0 0 7 1024: 198 3 7 | 1 3 11 2048: 463 8 16 | 2 7 19 4096: 878 16 33 | 4 15 34 8192: 1741 32 65 | 8 30 65 16384: 1828 34 100 | 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: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 421 7 7 | 0 0 0 8192: 2491 46 54 | 0 0 0 16384: 1963 36 91 | 1 3 3 32768: 532 9 101 | 3 11 15 65536: 52 0 102 | 18 69 84 131072: 0 0 102 | 4 15 100 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-ffff90f5c8ce0800.rpc_stats= snapshot_time: 1788565611.125049373 secs.nsecs start_time: 1788565413.729026195 secs.nsecs elapsed_time: 197.396023178 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 | 2 50 50 2: 0 0 0 | 1 25 75 3: 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 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 1 25 25 32768: 0 0 0 | 3 75 100 llite.lustre-ffff90f5c8ce0800.read_ahead_stats= snapshot_time 1788565611.151139691 secs.nsecs start_time 1788565413.771285778 secs.nsecs elapsed_time 197.379853913 secs.nsecs hits 79841 samples [pages] misses 5333 samples [pages] readpage_not_consecutive 8126 samples [pages] zero_size_window 79841 samples [pages] failed_to_fast_read 5333 samples [pages] readahead_pages 5333 samples [pages] 2 15 79841