== sanity test 101a: check read-ahead for random reads === 10:52:49 (1787496769) nreads: 10000 file size: 96MB 180.247386s, 3.31121MB/s osc.lustre-OST0000-osc-ffff8a6e48645000.rpc_stats= snapshot_time: 1787496972.135038511 secs.nsecs start_time: 1787496771.763798739 secs.nsecs elapsed_time: 200.371239772 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: 3 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 5946 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: 5955 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 5 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 18 0 0 | 0 0 4 128: 27 0 1 | 0 0 4 256: 63 1 2 | 0 0 4 512: 123 2 4 | 0 0 4 1024: 224 3 7 | 1 4 8 2048: 504 8 16 | 2 8 16 4096: 973 16 32 | 4 16 32 8192: 1968 33 65 | 8 32 64 16384: 2036 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: 0 0 0 | 0 0 0 4096: 655 10 10 | 0 0 0 8192: 3134 52 63 | 0 0 0 16384: 1845 30 94 | 0 0 0 32768: 432 7 101 | 2 8 8 65536: 30 0 102 | 20 80 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-ffff8a6e48645000.rpc_stats= snapshot_time: 1787496972.135181411 secs.nsecs start_time: 1787496771.764601402 secs.nsecs elapsed_time: 200.370580009 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-ffff8a6e48645000.read_ahead_stats= snapshot_time 1787496972.142504883 secs.nsecs start_time 1787496771.782137656 secs.nsecs elapsed_time 200.360367227 secs.nsecs hits 89184 samples [pages] misses 5955 samples [pages] readpage_not_consecutive 9102 samples [pages] zero_size_window 89185 samples [pages] failed_to_fast_read 5955 samples [pages] readahead_pages 5954 samples [pages] 1 15 89184