== sanity test 101a: check read-ahead for random reads === 13:47:09 (1783964829) nreads: 10000 file size: 96MB 180.888157s, 3.38498MB/s osc.lustre-OST0000-osc-ffff9404d9d2f800.rpc_stats= snapshot_time: 1783965031.101145684 secs.nsecs start_time: 1783964831.580265499 secs.nsecs elapsed_time: 199.520880185 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: 3 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 6136 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 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6143 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 19 0 0 | 0 0 4 128: 29 0 1 | 0 0 4 256: 64 1 2 | 0 0 4 512: 125 2 4 | 0 0 4 1024: 233 3 7 | 1 4 8 2048: 521 8 16 | 2 8 16 4096: 1004 16 32 | 4 16 32 8192: 2013 32 65 | 8 32 64 16384: 2116 34 100 | 9 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: 353 5 5 | 0 0 0 8192: 3644 59 65 | 0 0 0 16384: 1908 31 96 | 0 0 0 32768: 355 5 101 | 3 12 12 65536: 28 0 102 | 21 84 96 131072: 0 0 102 | 1 4 100 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-ffff9404d9d2f800.rpc_stats= snapshot_time: 1783965031.101273579 secs.nsecs start_time: 1783964831.580312714 secs.nsecs elapsed_time: 199.520960865 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-ffff9404d9d2f800.read_ahead_stats= snapshot_time 1783965031.122963286 secs.nsecs start_time 1783964831.632568591 secs.nsecs elapsed_time 199.490394695 secs.nsecs hits 92048 samples [pages] misses 6143 samples [pages] readpage_not_consecutive 9336 samples [pages] zero_size_window 92048 samples [pages] failed_to_fast_read 6143 samples [pages] readahead_pages 6143 samples [pages] 3 15 92048