== sanity test 101a: check read-ahead for random reads === 07:40:53 (1787571653) nreads: 10000 file size: 96MB 180.193781s, 3.01869MB/s osc.lustre-OST0000-osc-ffff96f083f89800.rpc_stats= snapshot_time: 1787571860.118130008 secs.nsecs start_time: 1787571656.014721509 secs.nsecs elapsed_time: 204.103408499 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 7 7 2: 1 0 0 | 0 0 7 4: 2 0 0 | 0 0 7 8: 2 0 0 | 0 0 7 16: 5441 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5446 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 5 0 0 | 0 0 11 32: 7 0 0 | 0 0 11 64: 15 0 0 | 0 0 11 128: 23 0 1 | 0 0 11 256: 55 1 2 | 0 0 11 512: 113 2 4 | 0 0 11 1024: 197 3 7 | 1 3 14 2048: 469 8 16 | 2 7 22 4096: 897 16 32 | 4 14 37 8192: 1790 32 65 | 8 29 66 16384: 1870 34 100 | 9 33 100 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: 124 2 2 | 0 0 0 8192: 2574 47 49 | 0 0 0 16384: 2311 42 91 | 0 0 0 32768: 524 9 101 | 0 0 0 65536: 41 0 102 | 14 51 51 131072: 0 0 102 | 13 48 100 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-ffff96f083f89800.rpc_stats= snapshot_time: 1787571860.118508424 secs.nsecs start_time: 1787571656.014754703 secs.nsecs elapsed_time: 204.103753721 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 | 2 66 66 2: 0 0 0 | 1 33 100 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 | 0 0 0 16384: 0 0 0 | 1 33 33 32768: 0 0 0 | 1 33 66 65536: 0 0 0 | 1 33 100 llite.lustre-ffff96f083f89800.read_ahead_stats= snapshot_time 1787571860.129736008 secs.nsecs start_time 1787571656.035478729 secs.nsecs elapsed_time 204.094257279 secs.nsecs hits 81583 samples [pages] misses 5446 samples [pages] readpage_not_consecutive 8295 samples [pages] zero_size_window 81583 samples [pages] failed_to_fast_read 5446 samples [pages] readahead_pages 5446 samples [pages] 1 15 81583