== sanity test 101a: check read-ahead for random reads === 11:01:37 (1787842897) nreads: 10000 file size: 96MB 180.127986s, 3.58191MB/s osc.lustre-OST0000-osc-ffff927e48f4c800.rpc_stats= snapshot_time: 1787843098.168780992 secs.nsecs start_time: 1787842898.902479798 secs.nsecs elapsed_time: 199.266301194 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-ffff927e48f4c800.rpc_stats= snapshot_time: 1787843098.168852652 secs.nsecs start_time: 1787842898.903672668 secs.nsecs elapsed_time: 199.265179984 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: 1 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 4951 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 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4955 100 100 | 100 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 16 0 0 | 0 0 1 128: 26 0 1 | 0 0 1 256: 52 1 2 | 1 1 2 512: 104 2 4 | 2 2 4 1024: 205 4 8 | 4 4 8 2048: 424 8 16 | 8 8 16 4096: 834 16 33 | 16 16 32 8192: 1640 33 66 | 32 32 64 16384: 1641 33 100 | 36 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: 79 1 1 | 0 0 0 8192: 2333 47 48 | 0 0 0 16384: 2052 41 90 | 44 44 44 32768: 555 11 101 | 50 50 94 65536: 53 1 102 | 6 6 100 131072: 0 0 102 | 2 2 102 262144: 0 0 102 | 0 0 102 524288: 0 0 102 | 0 0 102 1048576: 0 0 102 | 0 0 102 2097152: 0 0 102 | 0 0 102 4194304: 0 0 102 | 0 0 102 8388608: 0 0 102 | 0 0 102 16777216: 0 0 102 | 0 0 102 33554432: 0 0 102 | 0 0 102 67108864: 0 0 102 | 0 0 102 134217728: 0 0 102 | 0 0 102 268435456: 0 0 102 | 0 0 102 536870912: 0 0 102 | 0 0 102 1073741824: 0 0 102 | 0 0 102 llite.lustre-ffff927e48f4c800.read_ahead_stats= snapshot_time 1787843098.215774454 secs.nsecs start_time 1787842898.925959625 secs.nsecs elapsed_time 199.289814829 secs.nsecs hits 74231 samples [pages] misses 4955 samples [pages] readpage_not_consecutive 9837 samples [pages] zero_size_window 74231 samples [pages] failed_to_fast_read 4955 samples [pages] readahead_pages 4955 samples [pages] 1 15 74231