== sanity test 101a: check read-ahead for random reads === 12:07:35 (1788192455) nreads: 10000 file size: 96MB 180.592304s, 3.20472MB/s osc.lustre-OST0000-osc-ffff963287fc3000.rpc_stats= snapshot_time: 1788192658.187142434 secs.nsecs start_time: 1788192458.372640056 secs.nsecs elapsed_time: 199.814502378 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 osc.lustre-OST0001-osc-ffff963287fc3000.rpc_stats= snapshot_time: 1788192658.187212064 secs.nsecs start_time: 1788192458.372676367 secs.nsecs elapsed_time: 199.814535697 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: 1 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 4489 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: 4494 100 100 | 98 98 98 2: 0 0 100 | 2 2 100 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: 47 1 2 | 1 1 2 512: 96 2 4 | 2 2 4 1024: 177 3 8 | 4 4 8 2048: 387 8 16 | 8 8 16 4096: 757 16 33 | 16 16 32 8192: 1499 33 67 | 32 32 64 16384: 1481 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: 120 2 2 | 0 0 0 8192: 1836 40 43 | 0 0 0 16384: 1829 40 84 | 34 34 34 32768: 748 16 100 | 56 56 90 65536: 66 1 102 | 8 8 98 131072: 0 0 102 | 3 3 101 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-ffff963287fc3000.read_ahead_stats= snapshot_time 1788192658.214791960 secs.nsecs start_time 1788192458.432026001 secs.nsecs elapsed_time 199.782765959 secs.nsecs hits 67312 samples [pages] misses 4494 samples [pages] readpage_not_consecutive 8826 samples [pages] zero_size_window 67313 samples [pages] failed_to_fast_read 4494 samples [pages] readahead_pages 4493 samples [pages] 3 15 67312