== sanity test 101a: check read-ahead for random reads === 09:00:15 (1787576415) nreads: 10000 file size: 96MB 180.514561s, 2.91203MB/s osc.lustre-OST0000-osc-ffff8e620aff2000.rpc_stats= snapshot_time: 1787576615.108106055 secs.nsecs start_time: 1787576417.420392709 secs.nsecs elapsed_time: 197.687713346 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: 2 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 5264 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: 5272 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: 4 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 54 1 2 | 0 0 4 512: 113 2 4 | 0 0 4 1024: 199 3 7 | 1 4 8 2048: 459 8 16 | 2 8 16 4096: 869 16 33 | 4 16 32 8192: 1723 32 65 | 8 32 64 16384: 1800 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: 146 2 2 | 0 0 0 8192: 2557 48 51 | 0 0 0 16384: 2147 40 92 | 0 0 0 32768: 518 9 101 | 2 8 8 65536: 27 0 102 | 22 88 96 131072: 0 0 102 | 1 4 100 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-ffff8e620aff2000.rpc_stats= snapshot_time: 1787576615.108540987 secs.nsecs start_time: 1787576417.420424558 secs.nsecs elapsed_time: 197.688116429 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-ffff8e620aff2000.read_ahead_stats= snapshot_time 1787576615.122806911 secs.nsecs start_time 1787576417.440163946 secs.nsecs elapsed_time 197.682642965 secs.nsecs hits 78973 samples [pages] misses 5272 samples [pages] readpage_not_consecutive 8016 samples [pages] zero_size_window 78973 samples [pages] failed_to_fast_read 5272 samples [pages] readahead_pages 5272 samples [pages] 1 15 78973