== sanity test 101a: check read-ahead for random reads === 19:25:22 (1781220322) nreads: 10000 file size: 96MB 180.195976s, 2.6044MB/s osc.lustre-OST0000-osc-ffff88874616f800.rpc_stats= snapshot_time: 1781220524.159497023 secs.nsecs start_time: 1781220324.169620516 secs.nsecs elapsed_time: 199.989876507 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: 1 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 4680 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 1 3 3 256: 0 0 100 | 1 3 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: 4682 100 100 | 25 92 92 2: 0 0 100 | 2 7 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 1 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 4 0 0 | 0 0 3 32: 7 0 0 | 0 0 3 64: 12 0 0 | 0 0 3 128: 21 0 1 | 0 0 3 256: 45 0 2 | 0 0 3 512: 93 1 3 | 2 7 11 1024: 177 3 7 | 1 3 14 2048: 407 8 16 | 2 7 22 4096: 774 16 32 | 4 14 37 8192: 1529 32 65 | 8 29 66 16384: 1608 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: 89 1 1 | 0 0 0 8192: 1937 41 43 | 0 0 0 16384: 2148 45 89 | 0 0 0 32768: 593 12 101 | 1 3 3 65536: 25 0 102 | 22 81 85 131072: 0 0 102 | 4 14 100 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-ffff88874616f800.rpc_stats= snapshot_time: 1781220524.159647196 secs.nsecs start_time: 1781220324.169654920 secs.nsecs elapsed_time: 199.989992276 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-ffff88874616f800.read_ahead_stats= snapshot_time 1781220524.178676207 secs.nsecs start_time 1781220324.200693631 secs.nsecs elapsed_time 199.977982576 secs.nsecs hits 70195 samples [pages] misses 4682 samples [pages] readpage_not_consecutive 7157 samples [pages] zero_size_window 70195 samples [pages] failed_to_fast_read 4682 samples [pages] readahead_pages 4682 samples [pages] 2 15 70195