== sanity test 101a: check read-ahead for random reads === 04:32:49 (1788942769) nreads: 10000 file size: 96MB 179.452770s, 3.65199MB/s osc.lustre-OST0000-osc-ffff9089d059c800.rpc_stats= snapshot_time: 1788942965.750929677 secs.nsecs start_time: 1788942770.730103137 secs.nsecs elapsed_time: 195.020826540 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-ffff9089d059c800.rpc_stats= snapshot_time: 1788942965.751001338 secs.nsecs start_time: 1788942770.730134725 secs.nsecs elapsed_time: 195.020866613 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: 3 0 0 | 0 0 0 16: 6533 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 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6537 99 99 | 25 100 100 2: 2 0 100 | 0 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 19 0 0 | 0 0 4 128: 32 0 1 | 0 0 4 256: 72 1 2 | 0 0 4 512: 133 2 4 | 0 0 4 1024: 252 3 8 | 1 4 8 2048: 554 8 16 | 2 8 16 4096: 1073 16 32 | 4 16 32 8192: 2151 32 65 | 8 32 64 16384: 2234 34 100 | 9 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: 4 0 0 | 0 0 0 4096: 721 11 11 | 0 0 0 8192: 3861 59 70 | 0 0 0 16384: 1768 27 97 | 0 0 0 32768: 324 4 102 | 3 12 12 65536: 15 0 102 | 20 80 92 131072: 0 0 102 | 2 8 100 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 llite.lustre-ffff9089d059c800.read_ahead_stats= snapshot_time 1788942965.763372512 secs.nsecs start_time 1788942770.742941981 secs.nsecs elapsed_time 195.020430531 secs.nsecs hits 97964 samples [pages] misses 6539 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 97964 samples [pages] failed_to_fast_read 6539 samples [pages] readahead_pages 6539 samples [pages] 1 15 97964