== sanity test 101a: check read-ahead for random reads === 05:20:56 (1787736056) nreads: 10000 file size: 96MB 167.802775s, 3.90554MB/s osc.lustre-OST0000-osc-ffff8b2242d61800.rpc_stats= snapshot_time: 1787736242.673662683 secs.nsecs start_time: 1787736058.021720468 secs.nsecs elapsed_time: 184.651942215 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 0 0 2: 1 0 0 | 0 0 0 4: 4 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 5057 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 99 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5062 100 100 | 101 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 2 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 0 2 512: 107 2 4 | 2 1 4 1024: 207 4 8 | 4 3 8 2048: 428 8 16 | 8 7 16 4096: 854 16 33 | 16 15 32 8192: 1683 33 66 | 32 31 64 16384: 1674 33 100 | 36 35 100 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: 107 2 2 | 0 0 0 8192: 2603 51 53 | 0 0 0 16384: 2063 40 94 | 45 44 44 32768: 386 7 101 | 56 55 100 65536: 23 0 102 | 2 1 101 131072: 0 0 102 | 0 0 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 osc.lustre-OST0001-osc-ffff8b2242d61800.rpc_stats= snapshot_time: 1787736242.673866992 secs.nsecs start_time: 1787736058.021761983 secs.nsecs elapsed_time: 184.652105009 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 50 50 2: 0 0 0 | 0 0 50 4: 0 0 0 | 0 0 50 8: 0 0 0 | 1 50 100 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 | 1 50 50 8192: 0 0 0 | 0 0 50 16384: 0 0 0 | 0 0 50 32768: 0 0 0 | 1 50 100 llite.lustre-ffff8b2242d61800.read_ahead_stats= snapshot_time 1787736242.704060498 secs.nsecs start_time 1787736058.054297391 secs.nsecs elapsed_time 184.649763107 secs.nsecs hits 75842 samples [pages] misses 5062 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75842 samples [pages] failed_to_fast_read 5062 samples [pages] readahead_pages 5062 samples [pages] 1 15 75842