== sanity test 101a: check read-ahead for random reads === 01:21:04 (1787116864) nreads: 10000 file size: 96MB 180.318487s, 3.09147MB/s osc.lustre-OST0000-osc-ffff889f485f0800.rpc_stats= snapshot_time: 1787117064.054394060 secs.nsecs start_time: 1787116865.621070653 secs.nsecs elapsed_time: 198.433323407 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 | 1 3 3 2: 3 0 0 | 0 0 3 4: 3 0 0 | 0 0 3 8: 5 0 0 | 1 3 7 16: 5597 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5608 100 100 | 25 92 92 2: 0 0 100 | 1 3 96 3: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 4 0 0 | 0 0 11 32: 8 0 0 | 0 0 11 64: 15 0 0 | 0 0 11 128: 24 0 1 | 0 0 11 256: 58 1 2 | 0 0 11 512: 119 2 4 | 0 0 11 1024: 203 3 7 | 1 3 14 2048: 485 8 16 | 2 7 22 4096: 915 16 32 | 4 14 37 8192: 1843 32 65 | 8 29 66 16384: 1928 34 100 | 9 33 100 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: 592 10 10 | 0 0 0 8192: 2739 48 59 | 0 0 0 16384: 2011 35 95 | 1 3 3 32768: 376 6 101 | 8 29 33 65536: 18 0 102 | 17 62 96 131072: 2 0 102 | 1 3 100 262144: 1 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-ffff889f485f0800.rpc_stats= snapshot_time: 1787117064.054560962 secs.nsecs start_time: 1787116865.621097097 secs.nsecs elapsed_time: 198.433463865 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 | 3 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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: 0 0 0 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 2 66 66 32768: 0 0 0 | 0 0 66 65536: 0 0 0 | 1 33 100 llite.lustre-ffff889f485f0800.read_ahead_stats= snapshot_time 1787117064.063626101 secs.nsecs start_time 1787116865.631905994 secs.nsecs elapsed_time 198.431720107 secs.nsecs hits 83943 samples [pages] misses 5608 samples [pages] readpage_not_consecutive 8501 samples [pages] zero_size_window 83943 samples [pages] failed_to_fast_read 5608 samples [pages] readahead_pages 5608 samples [pages] 1 15 83943