== sanity test 101a: check read-ahead for random reads === 23:25:10 (1777001110) nreads: 10000 file size: 96MB 180.353795s, 1.09666MB/s osc.lustre-OST0000-osc-ffff957cd0977800.rpc_stats= snapshot_time: 1777001360.368039272 secs.nsecs start_time: 1777001115.756300435 secs.nsecs elapsed_time: 244.611738837 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-ffff957cd0977800.rpc_stats= snapshot_time: 1777001360.368166279 secs.nsecs start_time: 1777001115.756343067 secs.nsecs elapsed_time: 244.611823212 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: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 1544 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 3 2 2 256: 0 0 100 | 99 97 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 1547 100 100 | 100 98 98 2: 0 0 100 | 2 1 100 read write offset rpcs % cum % | rpcs % cum % 0: 1 0 0 | 1 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: 2 0 0 | 0 0 0 32: 1 0 0 | 0 0 0 64: 7 0 0 | 0 0 0 128: 11 0 1 | 0 0 0 256: 16 1 2 | 1 0 1 512: 31 2 4 | 2 1 3 1024: 63 4 8 | 4 3 7 2048: 145 9 17 | 8 7 15 4096: 281 18 36 | 16 15 31 8192: 545 35 71 | 33 32 63 16384: 444 28 100 | 37 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: 0 0 0 | 0 0 0 8192: 3 0 0 | 0 0 0 16384: 133 8 8 | 0 0 0 32768: 1012 65 74 | 5 4 4 65536: 431 27 102 | 61 59 64 131072: 3 0 102 | 34 33 98 262144: 1 0 102 | 3 2 100 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 llite.lustre-ffff957cd0977800.read_ahead_stats= snapshot_time 1777001360.486523782 secs.nsecs start_time 1777001115.816581714 secs.nsecs elapsed_time 244.669942068 secs.nsecs hits 23179 samples [pages] misses 1547 samples [pages] readpage_not_consecutive 3019 samples [pages] zero_size_window 23179 samples [pages] failed_to_fast_read 1547 samples [pages] readahead_pages 1547 samples [pages] 7 15 23179