== sanity test 101a: check read-ahead for random reads === 19:05:16 (1788563116) nreads: 10000 file size: 96MB 180.469816s, 2.9222MB/s osc.lustre-OST0000-osc-ffff8a1843e77000.rpc_stats= snapshot_time: 1788563321.119034583 secs.nsecs start_time: 1788563118.328239356 secs.nsecs elapsed_time: 202.790795227 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: 0 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5299 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: 5302 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 4 0 0 | 0 0 4 32: 6 0 0 | 0 0 4 64: 18 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 51 0 1 | 0 0 4 512: 112 2 4 | 0 0 4 1024: 207 3 8 | 1 4 8 2048: 457 8 16 | 2 8 16 4096: 885 16 33 | 4 16 32 8192: 1711 32 65 | 8 32 64 16384: 1824 34 100 | 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: 1 0 0 | 0 0 0 4096: 655 12 12 | 0 0 0 8192: 2428 45 58 | 0 0 0 16384: 1709 32 90 | 0 0 0 32768: 582 10 101 | 0 0 0 65536: 52 0 102 | 22 88 88 131072: 0 0 102 | 3 12 100 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-ffff8a1843e77000.rpc_stats= snapshot_time: 1788563321.119161405 secs.nsecs start_time: 1788563118.328281964 secs.nsecs elapsed_time: 202.790879441 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 llite.lustre-ffff8a1843e77000.read_ahead_stats= snapshot_time 1788563321.145060517 secs.nsecs start_time 1788563118.352237283 secs.nsecs elapsed_time 202.792823234 secs.nsecs hits 79480 samples [pages] misses 5302 samples [pages] readpage_not_consecutive 8042 samples [pages] zero_size_window 79480 samples [pages] failed_to_fast_read 5302 samples [pages] readahead_pages 5302 samples [pages] 1 15 79480