== sanity test 101a: check read-ahead for random reads === 08:53:38 (1789304018) nreads: 10000 file size: 96MB 180.262001s, 3.0419MB/s osc.lustre-OST0000-osc-ffff953506187800.rpc_stats= snapshot_time: 1789304222.124202643 secs.nsecs start_time: 1789304020.062739679 secs.nsecs elapsed_time: 202.061462964 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 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5506 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: 5507 99 99 | 25 100 100 2: 1 0 100 | 0 0 100 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: 4 0 0 | 0 0 4 32: 6 0 0 | 0 0 4 64: 18 0 0 | 0 0 4 128: 25 0 1 | 0 0 4 256: 52 0 1 | 0 0 4 512: 114 2 4 | 0 0 4 1024: 213 3 7 | 1 4 8 2048: 471 8 16 | 2 8 16 4096: 909 16 32 | 4 16 32 8192: 1799 32 65 | 8 32 64 16384: 1893 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: 333 6 6 | 0 0 0 8192: 2838 51 57 | 0 0 0 16384: 1956 35 93 | 0 0 0 32768: 479 8 101 | 0 0 0 65536: 31 0 102 | 20 80 80 131072: 0 0 102 | 5 20 100 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-ffff953506187800.rpc_stats= snapshot_time: 1789304222.124355382 secs.nsecs start_time: 1789304020.062776581 secs.nsecs elapsed_time: 202.061578801 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 llite.lustre-ffff953506187800.read_ahead_stats= snapshot_time 1789304222.146924482 secs.nsecs start_time 1789304020.101018193 secs.nsecs elapsed_time 202.045906289 secs.nsecs hits 82561 samples [pages] misses 5508 samples [pages] readpage_not_consecutive 8362 samples [pages] zero_size_window 82561 samples [pages] failed_to_fast_read 5508 samples [pages] readahead_pages 5508 samples [pages] 6 15 82561