== sanity test 101a: check read-ahead for random reads === 07:50:32 (1786103432) nreads: 10000 file size: 96MB 172.497689s, 3.79924MB/s osc.lustre-OST0000-osc-ffff8ed0c9af9800.rpc_stats= snapshot_time: 1786103624.072126130 secs.nsecs start_time: 1786103433.869936238 secs.nsecs elapsed_time: 190.202189892 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 | 1 50 50 16384: 0 0 0 | 0 0 50 32768: 0 0 0 | 0 0 50 65536: 0 0 0 | 1 50 100 osc.lustre-OST0001-osc-ffff8ed0c9af9800.rpc_stats= snapshot_time: 1786103624.072208992 secs.nsecs start_time: 1786103433.869958812 secs.nsecs elapsed_time: 190.202250180 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 7 7 2: 0 0 0 | 0 0 7 4: 1 0 0 | 0 0 7 8: 13 0 0 | 1 3 10 16: 6556 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: 6569 99 99 | 25 89 89 2: 1 0 100 | 1 3 92 3: 0 0 100 | 1 3 96 4: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 5 0 0 | 0 0 14 32: 8 0 0 | 0 0 14 64: 19 0 0 | 0 0 14 128: 32 0 1 | 0 0 14 256: 72 1 2 | 0 0 14 512: 133 2 4 | 0 0 14 1024: 252 3 8 | 1 3 17 2048: 558 8 16 | 2 7 25 4096: 1079 16 32 | 4 14 39 8192: 2167 32 65 | 8 28 67 16384: 2239 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: 472 7 7 | 0 0 0 8192: 4274 65 72 | 0 0 0 16384: 1717 26 98 | 0 0 0 32768: 250 3 102 | 4 14 14 65536: 13 0 102 | 23 82 96 131072: 0 0 102 | 1 3 100 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-ffff8ed0c9af9800.read_ahead_stats= snapshot_time 1786103624.084260000 secs.nsecs start_time 1786103433.885007338 secs.nsecs elapsed_time 190.199252662 secs.nsecs hits 98360 samples [pages] misses 6570 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98360 samples [pages] failed_to_fast_read 6570 samples [pages] readahead_pages 6570 samples [pages] 3 15 98360