== sanity test 101a: check read-ahead for random reads === 04:55:31 (1786179331) nreads: 10000 file size: 96MB 134.442873s, 4.87464MB/s osc.lustre-OST0000-osc-ffff8be6c8c93800.rpc_stats= snapshot_time: 1786179483.406807774 secs.nsecs start_time: 1786179332.582940072 secs.nsecs elapsed_time: 150.823867702 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 | 2 66 66 16384: 0 0 0 | 1 33 100 osc.lustre-OST0001-osc-ffff8be6c8c93800.rpc_stats= snapshot_time: 1786179483.406900804 secs.nsecs start_time: 1786179332.582989709 secs.nsecs elapsed_time: 150.823911095 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 0 0 2: 0 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 5047 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 | 100 99 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5052 100 100 | 100 99 99 2: 0 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 2 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 16 0 0 | 0 0 1 128: 26 0 1 | 0 0 1 256: 52 1 2 | 1 0 2 512: 107 2 4 | 2 1 4 1024: 207 4 8 | 4 3 8 2048: 427 8 16 | 8 7 16 4096: 852 16 33 | 16 15 32 8192: 1681 33 66 | 32 31 64 16384: 1671 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: 1 0 0 | 0 0 0 4096: 760 15 15 | 0 0 0 8192: 2966 58 73 | 4 3 3 16384: 1225 24 98 | 50 49 53 32768: 199 3 101 | 44 43 97 65536: 18 0 102 | 3 2 100 131072: 1 0 102 | 2 1 101 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-ffff8be6c8c93800.read_ahead_stats= snapshot_time 1786179483.416975982 secs.nsecs start_time 1786179332.602739208 secs.nsecs elapsed_time 150.814236774 secs.nsecs hits 75708 samples [pages] misses 5052 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75709 samples [pages] failed_to_fast_read 5052 samples [pages] readahead_pages 5051 samples [pages] 3 15 75708