== sanity test 101a: check read-ahead for random reads === 17:05:58 (1788815158) nreads: 10000 file size: 96MB 108.692268s, 6.0295MB/s osc.lustre-OST0000-osc-ffff9f72114b0000.rpc_stats= snapshot_time: 1788815279.827100477 secs.nsecs start_time: 1788815159.718088629 secs.nsecs elapsed_time: 120.109011848 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 | 2 1 1 2: 1 0 0 | 0 0 1 4: 3 0 0 | 0 0 1 8: 6 0 0 | 0 0 1 16: 5057 99 100 | 0 0 1 32: 0 0 100 | 0 0 1 64: 0 0 100 | 0 0 1 128: 0 0 100 | 0 0 1 256: 0 0 100 | 100 98 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5068 100 100 | 99 97 97 2: 0 0 100 | 3 2 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 3 2 2 1: 0 0 0 | 0 0 2 2: 0 0 0 | 0 0 2 4: 0 0 0 | 0 0 2 8: 0 0 0 | 0 0 2 16: 4 0 0 | 0 0 2 32: 6 0 0 | 0 0 2 64: 16 0 0 | 0 0 2 128: 27 0 1 | 0 0 2 256: 53 1 2 | 1 0 3 512: 109 2 4 | 2 1 5 1024: 206 4 8 | 4 3 9 2048: 430 8 16 | 8 7 17 4096: 855 16 33 | 16 15 33 8192: 1682 33 66 | 32 31 64 16384: 1677 33 100 | 36 35 100 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: 2 0 0 | 0 0 0 4096: 1015 20 20 | 1 0 0 8192: 3346 66 86 | 11 10 11 16384: 765 15 101 | 65 63 75 32768: 56 1 102 | 21 20 96 65536: 3 0 102 | 5 4 100 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-ffff9f72114b0000.rpc_stats= snapshot_time: 1788815279.827236096 secs.nsecs start_time: 1788815159.718136086 secs.nsecs elapsed_time: 120.109100010 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 | 2 66 66 2: 0 0 0 | 1 33 100 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 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 3 100 100 llite.lustre-ffff9f72114b0000.read_ahead_stats= snapshot_time 1788815279.836230279 secs.nsecs start_time 1788815159.736436789 secs.nsecs elapsed_time 120.099793490 secs.nsecs hits 75854 samples [pages] misses 5068 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75854 samples [pages] failed_to_fast_read 5068 samples [pages] readahead_pages 5067 samples [pages] 1 15 75854