== sanity test 101a: check read-ahead for random reads === 10:28:29 (1787581709) nreads: 10000 file size: 96MB 180.585382s, 2.66556MB/s osc.lustre-OST0000-osc-ffff99b2fc3c1000.rpc_stats= snapshot_time: 1787581911.135316983 secs.nsecs start_time: 1787581711.253165879 secs.nsecs elapsed_time: 199.882151104 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 | 1 3 3 2: 1 0 0 | 0 0 3 4: 1 0 0 | 0 0 3 8: 6 0 0 | 0 0 3 16: 4813 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4821 100 100 | 25 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 4 0 0 | 0 0 7 32: 7 0 0 | 0 0 7 64: 12 0 0 | 0 0 7 128: 21 0 1 | 0 0 7 256: 49 1 2 | 0 0 7 512: 103 2 4 | 0 0 7 1024: 180 3 7 | 1 3 11 2048: 421 8 16 | 2 7 19 4096: 795 16 33 | 4 15 34 8192: 1570 32 65 | 8 30 65 16384: 1654 34 100 | 9 34 100 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: 58 1 1 | 0 0 0 8192: 1914 39 40 | 1 3 3 16384: 2338 48 89 | 0 0 3 32768: 584 12 101 | 2 7 11 65536: 39 0 102 | 22 84 96 131072: 0 0 102 | 1 3 100 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-ffff99b2fc3c1000.rpc_stats= snapshot_time: 1787581911.135582812 secs.nsecs start_time: 1787581711.253202569 secs.nsecs elapsed_time: 199.882380243 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 1 25 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 50 50 16384: 0 0 0 | 2 50 100 llite.lustre-ffff99b2fc3c1000.read_ahead_stats= snapshot_time 1787581911.155721894 secs.nsecs start_time 1787581711.299594149 secs.nsecs elapsed_time 199.856127745 secs.nsecs hits 72221 samples [pages] misses 4821 samples [pages] readpage_not_consecutive 7341 samples [pages] zero_size_window 72221 samples [pages] failed_to_fast_read 4821 samples [pages] readahead_pages 4821 samples [pages] 1 15 72221