== sanity test 101a: check read-ahead for random reads === 07:52:47 (1787745167) nreads: 10000 file size: 96MB 180.306966s, 2.65005MB/s osc.lustre-OST0000-osc-ffff9b9d43cbe000.rpc_stats= snapshot_time: 1787745369.157640136 secs.nsecs start_time: 1787745169.175573616 secs.nsecs elapsed_time: 199.982066520 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: 1 0 0 | 0 0 7 4: 2 0 0 | 0 0 7 8: 6 0 0 | 0 0 7 16: 4764 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: 4773 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 7 0 0 | 0 0 11 64: 12 0 0 | 0 0 11 128: 21 0 1 | 0 0 11 256: 48 1 2 | 0 0 11 512: 97 2 4 | 0 0 11 1024: 178 3 7 | 1 3 14 2048: 412 8 16 | 2 7 22 4096: 796 16 33 | 4 14 37 8192: 1550 32 65 | 8 29 66 16384: 1643 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: 306 6 6 | 0 0 0 8192: 1879 39 45 | 0 0 0 16384: 2061 43 88 | 1 3 3 32768: 595 12 101 | 6 22 25 65536: 43 0 102 | 18 66 92 131072: 2 0 102 | 2 7 100 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-ffff9b9d43cbe000.rpc_stats= snapshot_time: 1787745369.157781179 secs.nsecs start_time: 1787745169.175604126 secs.nsecs elapsed_time: 199.982177053 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 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 2 66 66 32768: 0 0 0 | 0 0 66 65536: 0 0 0 | 1 33 100 llite.lustre-ffff9b9d43cbe000.read_ahead_stats= snapshot_time 1787745369.178667410 secs.nsecs start_time 1787745169.204372283 secs.nsecs elapsed_time 199.974295127 secs.nsecs hits 71470 samples [pages] misses 4773 samples [pages] readpage_not_consecutive 7287 samples [pages] zero_size_window 71470 samples [pages] failed_to_fast_read 4773 samples [pages] readahead_pages 4773 samples [pages] 1 15 71470