== sanity test 101a: check read-ahead for random reads === 21:06:27 (1777424787) nreads: 10000 file size: 96MB 61.850829s, 10.5958MB/s osc.lustre-OST0000-osc-ffff984d984cb800.rpc_stats= snapshot_time: 1777424861.341184232 secs.nsecs start_time: 1777424787.603683677 secs.nsecs elapsed_time: 73.737500555 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 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 50 50 2: 0 0 0 | 1 50 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 50 50 8192: 0 0 0 | 1 50 100 osc.lustre-OST0001-osc-ffff984d984cb800.rpc_stats= snapshot_time: 1777424861.341237502 secs.nsecs start_time: 1777424787.603718299 secs.nsecs elapsed_time: 73.737519203 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 7 7 2: 1 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 3 0 0 | 1 3 10 16: 6419 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6423 100 100 | 26 92 92 2: 0 0 100 | 1 3 96 3: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 8 0 0 | 0 0 14 64: 19 0 0 | 0 0 14 128: 32 0 1 | 0 0 14 256: 71 1 2 | 0 0 14 512: 134 2 4 | 0 0 14 1024: 260 4 8 | 1 3 17 2048: 560 8 17 | 2 7 25 4096: 1091 16 34 | 4 14 39 8192: 2161 33 67 | 8 28 67 16384: 2077 32 100 | 9 32 100 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: 4788 74 74 | 0 0 0 4096: 1753 27 101 | 3 10 10 8192: 35 0 102 | 0 0 10 16384: 0 0 102 | 18 64 75 32768: 0 0 102 | 5 17 92 65536: 0 0 102 | 2 7 100 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-ffff984d984cb800.read_ahead_stats= snapshot_time 1777424861.346716626 secs.nsecs start_time 1777424787.612542061 secs.nsecs elapsed_time 73.734174565 secs.nsecs hits 96286 samples [pages] misses 6423 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 96286 samples [pages] failed_to_fast_read 6423 samples [pages] readahead_pages 6423 samples [pages] 1 15 96286