== sanity test 101a: check read-ahead for random reads === 13:57:25 (1782928645) nreads: 10000 file size: 96MB 60.401692s, 10.85MB/s osc.lustre-OST0000-osc-ffff9338c2985000.rpc_stats= snapshot_time: 1782928719.705705331 secs.nsecs start_time: 1782928645.986129299 secs.nsecs elapsed_time: 73.719576032 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: 2 0 0 | 0 0 7 4: 2 0 0 | 0 0 7 8: 4 0 0 | 0 0 7 16: 6394 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: 6402 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: 8 0 0 | 0 0 11 64: 19 0 0 | 0 0 11 128: 29 0 1 | 0 0 11 256: 69 1 2 | 0 0 11 512: 133 2 4 | 0 0 11 1024: 268 4 8 | 1 3 14 2048: 552 8 16 | 2 7 22 4096: 1089 17 34 | 4 14 37 8192: 2142 33 67 | 8 29 66 16384: 2083 32 100 | 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: 40 0 0 | 0 0 0 2048: 6051 94 95 | 2 7 7 4096: 457 7 102 | 0 0 7 8192: 5 0 102 | 4 14 22 16384: 0 0 102 | 21 77 100 32768: 0 0 102 | 0 0 100 65536: 0 0 102 | 0 0 100 131072: 0 0 102 | 0 0 100 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-ffff9338c2985000.rpc_stats= snapshot_time: 1782928719.705891557 secs.nsecs start_time: 1782928645.986199687 secs.nsecs elapsed_time: 73.719691870 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 | 3 100 100 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 | 3 100 100 llite.lustre-ffff9338c2985000.read_ahead_stats= snapshot_time 1782928719.714326502 secs.nsecs start_time 1782928645.995739771 secs.nsecs elapsed_time 73.718586731 secs.nsecs hits 95894 samples [pages] misses 6402 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 95894 samples [pages] failed_to_fast_read 6402 samples [pages] readahead_pages 6402 samples [pages] 1 15 95894