== sanity test 101a: check read-ahead for random reads === 17:39:40 (1787607580) nreads: 10000 file size: 96MB 180.787206s, 3.16792MB/s osc.lustre-OST0000-osc-ffff8cd65159d800.rpc_stats= snapshot_time: 1787607785.206177343 secs.nsecs start_time: 1787607582.631187081 secs.nsecs elapsed_time: 202.574990262 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 | 1 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 1 100 100 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 | 0 0 0 16384: 0 0 0 | 1 100 100 osc.lustre-OST0001-osc-ffff8cd65159d800.rpc_stats= snapshot_time: 1787607785.206279624 secs.nsecs start_time: 1787607582.631273992 secs.nsecs elapsed_time: 202.575005632 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: 1 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 4422 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 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4424 99 99 | 100 100 100 2: 2 0 100 | 0 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 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: 15 0 0 | 0 0 1 128: 22 0 1 | 0 0 1 256: 46 1 2 | 1 1 2 512: 96 2 4 | 2 2 4 1024: 176 3 8 | 4 4 8 2048: 381 8 16 | 8 8 16 4096: 745 16 33 | 16 16 32 8192: 1472 33 67 | 32 32 64 16384: 1460 32 100 | 36 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: 0 0 0 | 0 0 0 4096: 111 2 2 | 0 0 0 8192: 1579 35 38 | 0 0 0 16384: 2102 47 85 | 22 22 22 32768: 693 15 101 | 67 67 89 65536: 45 1 102 | 12 12 101 131072: 1 0 102 | 0 0 101 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-ffff8cd65159d800.read_ahead_stats= snapshot_time 1787607785.224695172 secs.nsecs start_time 1787607582.660707074 secs.nsecs elapsed_time 202.563988098 secs.nsecs hits 66340 samples [pages] misses 4426 samples [pages] readpage_not_consecutive 8734 samples [pages] zero_size_window 66340 samples [pages] failed_to_fast_read 4426 samples [pages] readahead_pages 4426 samples [pages] 1 15 66340