== sanity test 101a: check read-ahead for random reads === 06:35:48 (1789122948) nreads: 10000 file size: 96MB 180.925065s, 3.40095MB/s osc.lustre-OST0000-osc-ffff88aebcb06800.rpc_stats= snapshot_time: 1789123147.135551230 secs.nsecs start_time: 1789122950.423620441 secs.nsecs elapsed_time: 196.711930789 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-ffff88aebcb06800.rpc_stats= snapshot_time: 1789123147.135629215 secs.nsecs start_time: 1789122950.423655454 secs.nsecs elapsed_time: 196.711973761 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: 3 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 4732 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: 4741 100 100 | 97 97 97 2: 0 0 100 | 3 3 100 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: 49 1 2 | 1 1 2 512: 100 2 4 | 2 2 4 1024: 193 4 8 | 4 4 8 2048: 408 8 16 | 8 8 16 4096: 803 16 33 | 16 16 32 8192: 1563 32 66 | 32 32 64 16384: 1570 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: 54 1 1 | 0 0 0 8192: 1905 40 41 | 0 0 0 16384: 2156 45 86 | 36 36 36 32768: 675 14 101 | 57 57 93 65536: 61 1 102 | 7 7 100 131072: 1 0 102 | 1 1 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 llite.lustre-ffff88aebcb06800.read_ahead_stats= snapshot_time 1789123147.157729063 secs.nsecs start_time 1789122950.445885367 secs.nsecs elapsed_time 196.711843696 secs.nsecs hits 70998 samples [pages] misses 4741 samples [pages] readpage_not_consecutive 9382 samples [pages] zero_size_window 70998 samples [pages] failed_to_fast_read 4741 samples [pages] readahead_pages 4741 samples [pages] 1 15 70998