== sanity test 101a: check read-ahead for random reads === 07:44:21 (1788867861) nreads: 10000 file size: 96MB 180.628562s, 3.50486MB/s osc.lustre-OST0000-osc-ffff9cb97f199800.rpc_stats= snapshot_time: 1788868064.099039754 secs.nsecs start_time: 1788867863.111327921 secs.nsecs elapsed_time: 200.987711833 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: 1 0 0 | 1 3 3 2: 3 0 0 | 0 0 3 4: 3 0 0 | 0 0 3 8: 4 0 0 | 0 0 3 16: 6338 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6349 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 6 0 0 | 0 0 7 32: 7 0 0 | 0 0 7 64: 22 0 0 | 0 0 7 128: 30 0 1 | 0 0 7 256: 66 1 2 | 0 0 7 512: 130 2 4 | 0 0 7 1024: 254 4 8 | 1 3 11 2048: 531 8 16 | 2 7 19 4096: 1049 16 33 | 4 15 34 8192: 2091 32 65 | 8 30 65 16384: 2159 34 100 | 9 34 100 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: 1 0 0 | 0 0 0 4096: 771 12 12 | 0 0 0 8192: 3602 56 68 | 0 0 0 16384: 1777 27 96 | 1 3 3 32768: 329 5 102 | 4 15 19 65536: 19 0 102 | 20 76 96 131072: 0 0 102 | 1 3 100 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-ffff9cb97f199800.rpc_stats= snapshot_time: 1788868064.099193113 secs.nsecs start_time: 1788867863.111405970 secs.nsecs elapsed_time: 200.987787143 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 1 25 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 1 25 25 16384: 0 0 0 | 1 25 50 32768: 0 0 0 | 2 50 100 llite.lustre-ffff9cb97f199800.read_ahead_stats= snapshot_time 1788868064.114147997 secs.nsecs start_time 1788867863.139655472 secs.nsecs elapsed_time 200.974492525 secs.nsecs hits 95064 samples [pages] misses 6349 samples [pages] readpage_not_consecutive 9652 samples [pages] zero_size_window 95065 samples [pages] failed_to_fast_read 6349 samples [pages] readahead_pages 6348 samples [pages] 1 15 95064