== sanity test 101a: check read-ahead for random reads === 22:27:27 (1787365647) nreads: 10000 file size: 96MB 180.152934s, 2.85895MB/s osc.lustre-OST0000-osc-ffff8f75463e1000.rpc_stats= snapshot_time: 1787365846.097024557 secs.nsecs start_time: 1787365649.372942691 secs.nsecs elapsed_time: 196.724081866 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 | 1 3 3 2: 0 0 0 | 0 0 3 4: 3 0 0 | 0 0 3 8: 3 0 0 | 0 0 3 16: 5152 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5158 100 100 | 25 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 4 0 0 | 0 0 7 32: 7 0 0 | 0 0 7 64: 13 0 0 | 0 0 7 128: 22 0 1 | 0 0 7 256: 53 1 2 | 0 0 7 512: 110 2 4 | 0 0 7 1024: 196 3 7 | 1 3 11 2048: 447 8 16 | 2 7 19 4096: 852 16 33 | 4 15 34 8192: 1677 32 65 | 8 30 65 16384: 1771 34 100 | 9 34 100 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: 108 2 2 | 0 0 0 8192: 2407 46 48 | 0 0 0 16384: 2202 42 91 | 1 3 3 32768: 536 10 101 | 5 19 23 65536: 26 0 102 | 18 69 92 131072: 0 0 102 | 1 3 96 262144: 0 0 102 | 1 3 100 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-ffff8f75463e1000.rpc_stats= snapshot_time: 1787365846.097183017 secs.nsecs start_time: 1787365649.373104793 secs.nsecs elapsed_time: 196.724078224 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 1 25 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 0 0 0 16384: 0 0 0 | 3 75 75 32768: 0 0 0 | 1 25 100 llite.lustre-ffff8f75463e1000.read_ahead_stats= snapshot_time 1787365846.113361557 secs.nsecs start_time 1787365649.385223248 secs.nsecs elapsed_time 196.728138309 secs.nsecs hits 77261 samples [pages] misses 5158 samples [pages] readpage_not_consecutive 7855 samples [pages] zero_size_window 77261 samples [pages] failed_to_fast_read 5158 samples [pages] readahead_pages 5158 samples [pages] 2 15 77261