== sanity test 101a: check read-ahead for random reads === 16:28:14 (1781209694) nreads: 10000 file size: 96MB 180.919325s, 3.13771MB/s osc.lustre-OST0000-osc-ffff9dd045b8f800.rpc_stats= snapshot_time: 1781209898.100773962 secs.nsecs start_time: 1781209695.856996915 secs.nsecs elapsed_time: 202.243777047 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 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 3 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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 33 33 16384: 0 0 0 | 1 33 66 32768: 0 0 0 | 0 0 66 65536: 0 0 0 | 1 33 100 osc.lustre-OST0001-osc-ffff9dd045b8f800.rpc_stats= snapshot_time: 1781209898.101580940 secs.nsecs start_time: 1781209695.857045399 secs.nsecs elapsed_time: 202.244535541 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 | 2 1 1 2: 2 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 3 0 0 | 0 0 1 16: 4393 99 100 | 0 0 1 32: 0 0 100 | 0 0 1 64: 0 0 100 | 0 0 1 128: 0 0 100 | 0 0 1 256: 0 0 100 | 100 98 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4398 99 99 | 91 89 89 2: 1 0 100 | 11 10 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 3 2 2 1: 0 0 0 | 0 0 2 2: 0 0 0 | 0 0 2 4: 0 0 0 | 0 0 2 8: 0 0 0 | 0 0 2 16: 3 0 0 | 0 0 2 32: 6 0 0 | 0 0 2 64: 15 0 0 | 0 0 2 128: 22 0 1 | 0 0 2 256: 46 1 2 | 1 0 3 512: 96 2 4 | 2 1 5 1024: 174 3 8 | 4 3 9 2048: 378 8 16 | 8 7 17 4096: 738 16 33 | 16 15 33 8192: 1469 33 67 | 32 31 64 16384: 1449 32 100 | 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: 166 3 3 | 1 0 0 8192: 1731 39 43 | 0 0 0 16384: 1832 41 84 | 19 18 19 32768: 717 16 101 | 60 58 78 65536: 54 1 102 | 16 15 94 131072: 1 0 102 | 7 6 100 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 llite.lustre-ffff9dd045b8f800.read_ahead_stats= snapshot_time 1781209898.116956846 secs.nsecs start_time 1781209695.889668380 secs.nsecs elapsed_time 202.227288466 secs.nsecs hits 65909 samples [pages] misses 4399 samples [pages] readpage_not_consecutive 8657 samples [pages] zero_size_window 65909 samples [pages] failed_to_fast_read 4399 samples [pages] readahead_pages 4398 samples [pages] 1 15 65909