== sanity test 101a: check read-ahead for random reads === 01:33:33 (1787117613) nreads: 10000 file size: 96MB 180.292844s, 2.46088MB/s osc.lustre-OST0000-osc-ffff9b9298320800.rpc_stats= snapshot_time: 1787117814.064420334 secs.nsecs start_time: 1787117615.018357010 secs.nsecs elapsed_time: 199.046063324 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-ffff9b9298320800.rpc_stats= snapshot_time: 1787117814.064493987 secs.nsecs start_time: 1787117615.018394347 secs.nsecs elapsed_time: 199.046099640 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: 0 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 4437 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: 4441 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 6 0 0 | 0 0 4 64: 12 0 0 | 0 0 4 128: 21 0 1 | 0 0 4 256: 43 0 2 | 0 0 4 512: 92 2 4 | 0 0 4 1024: 170 3 7 | 1 4 8 2048: 385 8 16 | 2 8 16 4096: 740 16 33 | 4 16 32 8192: 1443 32 65 | 8 32 64 16384: 1520 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: 27 0 0 | 0 0 0 8192: 1588 35 36 | 0 0 0 16384: 2173 48 85 | 0 0 0 32768: 712 16 101 | 6 24 24 65536: 44 0 102 | 15 60 84 131072: 1 0 102 | 4 16 100 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-ffff9b9298320800.read_ahead_stats= snapshot_time 1787117814.073181137 secs.nsecs start_time 1787117615.040712862 secs.nsecs elapsed_time 199.032468275 secs.nsecs hits 66558 samples [pages] misses 4441 samples [pages] readpage_not_consecutive 6766 samples [pages] zero_size_window 66559 samples [pages] failed_to_fast_read 4441 samples [pages] readahead_pages 4440 samples [pages] 3 15 66558