== sanity test 101a: check read-ahead for random reads === 13:51:51 (1771440711) nreads: 10000 file size: 96MB 68.710723s, 9.53796MB/s osc.lustre-OST0000-osc-ffff8e53c6ed8000.rpc_stats= snapshot_time: 1771440789.649087696 secs.nsecs start_time: 1771440712.279801151 secs.nsecs elapsed_time: 77.369286545 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-ffff8e53c6ed8000.rpc_stats= snapshot_time: 1771440789.649158301 secs.nsecs start_time: 1771440712.279830533 secs.nsecs elapsed_time: 77.369327768 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: 1 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 5015 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: 5022 100 100 | 100 100 100 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: 26 0 1 | 0 0 1 256: 52 1 2 | 1 1 2 512: 107 2 4 | 2 2 4 1024: 205 4 8 | 4 4 8 2048: 427 8 16 | 8 8 16 4096: 855 17 33 | 16 16 32 8192: 1672 33 67 | 32 32 64 16384: 1649 32 100 | 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: 546 10 10 | 0 0 0 4096: 3495 69 80 | 10 10 10 8192: 1070 21 101 | 72 72 82 16384: 29 0 102 | 19 19 101 32768: 0 0 102 | 0 0 101 65536: 0 0 102 | 0 0 101 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 llite.lustre-ffff8e53c6ed8000.read_ahead_stats= snapshot_time 1771440789.657553020 secs.nsecs start_time 1771440712.287963376 secs.nsecs elapsed_time 77.369589644 secs.nsecs hits 75215 samples [pages] misses 5022 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75216 samples [pages] failed_to_fast_read 5022 samples [pages] readahead_pages 5021 samples [pages] 1 15 75215