== sanity test 101a: check read-ahead for random reads === 16:36:03 (1784234163) nreads: 10000 file size: 96MB 86.096212s, 7.61195MB/s osc.lustre-OST0000-osc-ffff9fcf86038000.rpc_stats= snapshot_time: 1784234262.796964984 secs.nsecs start_time: 1784234163.787426638 secs.nsecs elapsed_time: 99.009538346 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-ffff9fcf86038000.rpc_stats= snapshot_time: 1784234262.797033699 secs.nsecs start_time: 1784234163.787473871 secs.nsecs elapsed_time: 99.009559828 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: 2 0 0 | 0 0 0 4: 6 0 0 | 0 0 0 8: 6 0 0 | 0 0 0 16: 6546 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: 6560 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 6 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 21 0 0 | 0 0 4 128: 33 0 1 | 0 0 4 256: 70 1 2 | 0 0 4 512: 132 2 4 | 0 0 4 1024: 256 3 8 | 1 4 8 2048: 550 8 16 | 2 8 16 4096: 1092 16 33 | 4 16 32 8192: 2174 33 66 | 8 32 64 16384: 2214 33 100 | 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: 1520 23 23 | 0 0 0 4096: 3913 59 82 | 0 0 0 8192: 1236 18 101 | 0 0 0 16384: 46 0 102 | 17 68 68 32768: 0 0 102 | 8 32 100 65536: 0 0 102 | 0 0 100 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 llite.lustre-ffff9fcf86038000.read_ahead_stats= snapshot_time 1784234262.804054729 secs.nsecs start_time 1784234163.798908943 secs.nsecs elapsed_time 99.005145786 secs.nsecs hits 98199 samples [pages] misses 6560 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98199 samples [pages] failed_to_fast_read 6560 samples [pages] readahead_pages 6560 samples [pages] 1 15 98199