== sanity test 101a: check read-ahead for random reads === 17:12:52 (1781212372) nreads: 10000 file size: 96MB 180.340677s, 3.01587MB/s osc.lustre-OST0000-osc-ffff98bbc5db7000.rpc_stats= snapshot_time: 1781212579.191639688 secs.nsecs start_time: 1781212374.960446368 secs.nsecs elapsed_time: 204.231193320 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 | 0 0 0 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 0 0 0 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 osc.lustre-OST0001-osc-ffff98bbc5db7000.rpc_stats= snapshot_time: 1781212579.194509415 secs.nsecs start_time: 1781212374.960481891 secs.nsecs elapsed_time: 204.234027524 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 | 0 0 0 2: 2 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5448 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5454 99 99 | 25 100 100 2: 1 0 100 | 0 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 6 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 23 0 0 | 0 0 4 256: 55 1 1 | 0 0 4 512: 114 2 4 | 0 0 4 1024: 200 3 7 | 1 4 8 2048: 469 8 16 | 2 8 16 4096: 897 16 32 | 4 16 32 8192: 1782 32 65 | 8 32 64 16384: 1884 34 100 | 9 36 100 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: 3 0 0 | 0 0 0 4096: 529 9 9 | 0 0 0 8192: 2631 48 57 | 0 0 0 16384: 1908 34 92 | 0 0 0 32768: 479 8 101 | 0 0 0 65536: 33 0 102 | 11 44 44 131072: 0 0 102 | 12 48 92 262144: 0 0 102 | 2 8 100 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-ffff98bbc5db7000.read_ahead_stats= snapshot_time 1781212579.215133506 secs.nsecs start_time 1781212374.974957582 secs.nsecs elapsed_time 204.240175924 secs.nsecs hits 81723 samples [pages] misses 5455 samples [pages] readpage_not_consecutive 8294 samples [pages] zero_size_window 81723 samples [pages] failed_to_fast_read 5455 samples [pages] readahead_pages 5455 samples [pages] 1 15 81723