== sanity test 101a: check read-ahead for random reads === 19:57:50 (1784937470) nreads: 10000 file size: 96MB 173.980725s, 3.76685MB/s osc.lustre-OST0000-osc-ffff9676c7cad000.rpc_stats= snapshot_time: 1784937663.732824146 secs.nsecs start_time: 1784937472.185257031 secs.nsecs elapsed_time: 191.547567115 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 | 1 33 33 16384: 0 0 0 | 1 33 66 32768: 0 0 0 | 1 33 100 osc.lustre-OST0001-osc-ffff9676c7cad000.rpc_stats= snapshot_time: 1784937663.732891739 secs.nsecs start_time: 1784937472.185297061 secs.nsecs elapsed_time: 191.547594678 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: 3 0 0 | 2 1 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 7 0 0 | 0 0 1 16: 5032 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: 5042 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: 26 0 1 | 0 0 2 256: 53 1 2 | 1 0 3 512: 106 2 4 | 2 1 5 1024: 208 4 8 | 4 3 9 2048: 430 8 16 | 8 7 17 4096: 850 16 33 | 16 15 33 8192: 1670 33 66 | 32 31 64 16384: 1670 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: 0 0 0 | 0 0 0 4096: 149 2 2 | 0 0 0 8192: 2513 49 52 | 3 2 2 16384: 2072 41 93 | 43 42 45 32768: 406 8 101 | 55 53 99 65536: 20 0 102 | 2 1 100 131072: 0 0 102 | 1 0 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 llite.lustre-ffff9676c7cad000.read_ahead_stats= snapshot_time 1784937663.748518174 secs.nsecs start_time 1784937472.196555470 secs.nsecs elapsed_time 191.551962704 secs.nsecs hits 75468 samples [pages] misses 5042 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75471 samples [pages] failed_to_fast_read 5042 samples [pages] readahead_pages 5039 samples [pages] 5 15 75468