== sanity test 101a: check read-ahead for random reads === 04:51:24 (1784278284) nreads: 10000 file size: 96MB 75.915171s, 8.63279MB/s osc.lustre-OST0000-osc-ffff8ceae089f000.rpc_stats= snapshot_time: 1784278369.463806485 secs.nsecs start_time: 1784278284.712179349 secs.nsecs elapsed_time: 84.751627136 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: 5 0 0 | 0 0 3 8: 3 0 0 | 0 0 3 16: 6466 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: 6475 100 100 | 26 100 100 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: 5 0 0 | 0 0 7 32: 8 0 0 | 0 0 7 64: 20 0 0 | 0 0 7 128: 31 0 1 | 0 0 7 256: 73 1 2 | 0 0 7 512: 135 2 4 | 0 0 7 1024: 263 4 8 | 1 3 11 2048: 568 8 17 | 2 7 19 4096: 1094 16 34 | 4 15 34 8192: 2166 33 67 | 8 30 65 16384: 2107 32 100 | 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: 3564 55 55 | 0 0 0 4096: 2596 40 95 | 0 0 0 8192: 366 5 100 | 5 19 19 16384: 90 1 102 | 16 61 80 32768: 12 0 102 | 5 19 100 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 osc.lustre-OST0001-osc-ffff8ceae089f000.rpc_stats= snapshot_time: 1784278369.464021767 secs.nsecs start_time: 1784278284.712212329 secs.nsecs elapsed_time: 84.751809438 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 | 1 25 25 8192: 0 0 0 | 3 75 100 llite.lustre-ffff8ceae089f000.read_ahead_stats= snapshot_time 1784278369.476069705 secs.nsecs start_time 1784278284.721010156 secs.nsecs elapsed_time 84.755059549 secs.nsecs hits 96977 samples [pages] misses 6475 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 96977 samples [pages] failed_to_fast_read 6475 samples [pages] readahead_pages 6475 samples [pages] 1 15 96977