== sanity test 101a: check read-ahead for random reads === 13:09:17 (1785776957) nreads: 10000 file size: 96MB 180.692513s, 2.31398MB/s osc.lustre-OST0000-osc-ffff8bd909847000.rpc_stats= snapshot_time: 1785777168.147624124 secs.nsecs start_time: 1785776959.493820628 secs.nsecs elapsed_time: 208.653803496 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: 1 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 4167 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 | 1 3 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4173 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 1 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 3 0 0 | 0 0 3 32: 6 0 0 | 0 0 3 64: 11 0 0 | 0 0 3 128: 20 0 1 | 0 0 3 256: 42 1 2 | 0 0 3 512: 84 2 4 | 1 3 7 1024: 161 3 7 | 1 3 11 2048: 364 8 16 | 2 7 19 4096: 684 16 33 | 4 15 34 8192: 1368 32 65 | 8 30 65 16384: 1426 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: 227 5 5 | 0 0 0 8192: 1370 32 38 | 0 0 0 16384: 1800 43 81 | 0 0 0 32768: 741 17 99 | 0 0 0 65536: 131 3 102 | 21 80 80 131072: 3 0 102 | 5 19 100 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-ffff8bd909847000.rpc_stats= snapshot_time: 1785777168.147758235 secs.nsecs start_time: 1785776959.493857237 secs.nsecs elapsed_time: 208.653900998 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 llite.lustre-ffff8bd909847000.read_ahead_stats= snapshot_time 1785777168.187485580 secs.nsecs start_time 1785776959.521950860 secs.nsecs elapsed_time 208.665534720 secs.nsecs hits 62491 samples [pages] misses 4173 samples [pages] readpage_not_consecutive 6377 samples [pages] zero_size_window 62491 samples [pages] failed_to_fast_read 4173 samples [pages] readahead_pages 4173 samples [pages] 1 15 62491