== sanity test 101a: check read-ahead for random reads === 07:00:51 (1787137251) nreads: 10000 file size: 96MB 180.923409s, 3.52016MB/s osc.lustre-OST0000-osc-ffff967fb7f40800.rpc_stats= snapshot_time: 1787137453.159437091 secs.nsecs start_time: 1787137252.898326730 secs.nsecs elapsed_time: 200.261110361 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: 3 0 0 | 0 0 0 8: 4 0 0 | 0 0 0 16: 6320 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: 6328 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 6 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 19 0 0 | 0 0 4 128: 30 0 1 | 0 0 4 256: 65 1 2 | 0 0 4 512: 129 2 4 | 0 0 4 1024: 242 3 7 | 1 4 8 2048: 535 8 16 | 2 8 16 4096: 1037 16 32 | 4 16 32 8192: 2074 32 65 | 8 32 64 16384: 2178 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: 3 0 0 | 0 0 0 4096: 922 14 14 | 0 0 0 8192: 3525 55 70 | 0 0 0 16384: 1644 25 96 | 0 0 0 32768: 363 5 102 | 4 16 16 65536: 20 0 102 | 17 68 84 131072: 0 0 102 | 3 12 96 262144: 0 0 102 | 1 4 100 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-ffff967fb7f40800.rpc_stats= snapshot_time: 1787137453.159618551 secs.nsecs start_time: 1787137252.898377082 secs.nsecs elapsed_time: 200.261241469 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-ffff967fb7f40800.read_ahead_stats= snapshot_time 1787137453.183133569 secs.nsecs start_time 1787137252.933411865 secs.nsecs elapsed_time 200.249721704 secs.nsecs hits 94800 samples [pages] misses 6328 samples [pages] readpage_not_consecutive 9710 samples [pages] zero_size_window 94800 samples [pages] failed_to_fast_read 6328 samples [pages] readahead_pages 6328 samples [pages] 1 15 94800