== sanity test 101a: check read-ahead for random reads === 15:21:24 (1787340084) nreads: 10000 file size: 96MB 180.258843s, 3.22556MB/s osc.lustre-OST0000-osc-ffff9a7e7e458800.rpc_stats= snapshot_time: 1787340290.123333984 secs.nsecs start_time: 1787340086.999042958 secs.nsecs elapsed_time: 203.124291026 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: 2 0 0 | 0 0 3 4: 2 0 0 | 0 0 3 8: 2 0 0 | 0 0 3 16: 5844 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: 5850 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 5 0 0 | 0 0 7 32: 7 0 0 | 0 0 7 64: 20 0 0 | 0 0 7 128: 25 0 1 | 0 0 7 256: 58 0 2 | 0 0 7 512: 120 2 4 | 0 0 7 1024: 228 3 7 | 1 3 11 2048: 494 8 16 | 2 7 19 4096: 968 16 32 | 4 15 34 8192: 1923 32 65 | 8 30 65 16384: 1998 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: 2 0 0 | 0 0 0 4096: 274 4 4 | 0 0 0 8192: 3051 52 56 | 0 0 0 16384: 2157 36 93 | 0 0 0 32768: 473 8 101 | 4 15 15 65536: 31 0 102 | 10 38 53 131072: 0 0 102 | 12 46 100 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-ffff9a7e7e458800.rpc_stats= snapshot_time: 1787340290.123656422 secs.nsecs start_time: 1787340086.999078753 secs.nsecs elapsed_time: 203.124577669 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 | 1 25 25 16384: 0 0 0 | 0 0 25 32768: 0 0 0 | 1 25 50 65536: 0 0 0 | 2 50 100 llite.lustre-ffff9a7e7e458800.read_ahead_stats= snapshot_time 1787340290.138164510 secs.nsecs start_time 1787340087.029261445 secs.nsecs elapsed_time 203.108903065 secs.nsecs hits 87674 samples [pages] misses 5850 samples [pages] readpage_not_consecutive 8867 samples [pages] zero_size_window 87674 samples [pages] failed_to_fast_read 5850 samples [pages] readahead_pages 5850 samples [pages] 1 15 87674