== sanity test 101a: check read-ahead for random reads === 21:03:11 (1786064591) nreads: 10000 file size: 96MB 180.509870s, 3.50716MB/s osc.lustre-OST0000-osc-ffff8963c387e000.rpc_stats= snapshot_time: 1786064795.065313234 secs.nsecs start_time: 1786064593.083702673 secs.nsecs elapsed_time: 201.981610561 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 | 2 100 100 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 | 0 0 0 8192: 0 0 0 | 2 100 100 osc.lustre-OST0001-osc-ffff8963c387e000.rpc_stats= snapshot_time: 1786064795.065368584 secs.nsecs start_time: 1786064593.083733446 secs.nsecs elapsed_time: 201.981635138 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 7 7 2: 1 0 0 | 0 0 7 4: 3 0 0 | 0 0 7 8: 4 0 0 | 1 3 10 16: 6315 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6323 99 99 | 27 96 96 2: 1 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 7 0 0 | 0 0 14 64: 22 0 0 | 0 0 14 128: 30 0 1 | 0 0 14 256: 65 1 2 | 0 0 14 512: 128 2 4 | 0 0 14 1024: 258 4 8 | 1 3 17 2048: 530 8 16 | 2 7 25 4096: 1052 16 33 | 4 14 39 8192: 2066 32 65 | 8 28 67 16384: 2157 34 100 | 9 32 100 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: 5 0 0 | 0 0 0 4096: 1058 16 16 | 0 0 0 8192: 3375 53 70 | 3 10 10 16384: 1682 26 96 | 0 0 10 32768: 335 5 102 | 2 7 17 65536: 18 0 102 | 22 78 96 131072: 0 0 102 | 1 3 100 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-ffff8963c387e000.read_ahead_stats= snapshot_time 1786064795.077844060 secs.nsecs start_time 1786064593.095754432 secs.nsecs elapsed_time 201.982089628 secs.nsecs hits 94727 samples [pages] misses 6324 samples [pages] readpage_not_consecutive 9652 samples [pages] zero_size_window 94728 samples [pages] failed_to_fast_read 6324 samples [pages] readahead_pages 6323 samples [pages] 1 15 94727