== sanity test 101a: check read-ahead for random reads === 09:09:49 (1787836189) nreads: 10000 file size: 96MB 180.193317s, 2.81975MB/s osc.lustre-OST0000-osc-ffff9a78430a9800.rpc_stats= snapshot_time: 1787836390.106866447 secs.nsecs start_time: 1787836191.695475686 secs.nsecs elapsed_time: 198.411390761 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: 1 0 0 | 0 0 3 8: 5 0 0 | 0 0 3 16: 5081 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: 5087 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 21 0 0 | 0 0 7 256: 54 1 2 | 0 0 7 512: 109 2 4 | 0 0 7 1024: 191 3 7 | 1 3 11 2048: 448 8 16 | 2 7 19 4096: 847 16 33 | 4 15 34 8192: 1661 32 66 | 8 30 65 16384: 1727 33 100 | 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: 1 0 0 | 0 0 0 4096: 337 6 6 | 0 0 0 8192: 2319 45 52 | 1 3 3 16384: 1909 37 89 | 0 0 3 32768: 578 11 101 | 5 19 23 65536: 62 1 102 | 19 73 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 osc.lustre-OST0001-osc-ffff9a78430a9800.rpc_stats= snapshot_time: 1787836390.107017975 secs.nsecs start_time: 1787836191.695504214 secs.nsecs elapsed_time: 198.411513761 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 | 3 75 75 16384: 0 0 0 | 0 0 75 32768: 0 0 0 | 1 25 100 llite.lustre-ffff9a78430a9800.read_ahead_stats= snapshot_time 1787836390.122995924 secs.nsecs start_time 1787836191.713608112 secs.nsecs elapsed_time 198.409387812 secs.nsecs hits 76219 samples [pages] misses 5087 samples [pages] readpage_not_consecutive 7749 samples [pages] zero_size_window 76219 samples [pages] failed_to_fast_read 5087 samples [pages] readahead_pages 5087 samples [pages] 2 15 76219