== sanity test 101a: check read-ahead for random reads === 11:23:38 (1790954618) nreads: 10000 file size: 96MB 159.225514s, 4.11592MB/s osc.lustre-OST0000-osc-ffff91dd41f86000.rpc_stats= snapshot_time: 1790954796.218917073 secs.nsecs start_time: 1790954620.261920549 secs.nsecs elapsed_time: 175.956996524 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-ffff91dd41f86000.rpc_stats= snapshot_time: 1790954796.219077933 secs.nsecs start_time: 1790954620.261954505 secs.nsecs elapsed_time: 175.957123428 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 | 0 0 0 2: 1 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 5054 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 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5063 100 100 | 88 88 88 2: 0 0 100 | 9 9 97 3: 0 0 100 | 3 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 16 0 0 | 0 0 1 128: 27 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 108 2 4 | 2 2 4 1024: 207 4 8 | 4 4 8 2048: 428 8 16 | 8 8 16 4096: 856 16 33 | 16 16 32 8192: 1681 33 66 | 32 32 64 16384: 1674 33 100 | 36 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: 0 0 0 | 0 0 0 4096: 347 6 6 | 0 0 0 8192: 2568 50 57 | 6 6 6 16384: 1903 37 95 | 33 33 39 32768: 347 6 102 | 40 40 79 65536: 18 0 102 | 14 14 93 131072: 0 0 102 | 4 4 97 262144: 0 0 102 | 2 2 99 524288: 0 0 102 | 1 1 100 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-ffff91dd41f86000.read_ahead_stats= snapshot_time 1790954796.250650353 secs.nsecs start_time 1790954620.276598347 secs.nsecs elapsed_time 175.974052006 secs.nsecs hits 75805 samples [pages] misses 5063 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75806 samples [pages] failed_to_fast_read 5063 samples [pages] readahead_pages 5062 samples [pages] 1 15 75805