== sanity test 101a: check read-ahead for random reads === 23:51:31 (1783137091) nreads: 10000 file size: 96MB 180.799016s, 2.67401MB/s osc.lustre-OST0000-osc-ffff984d46051800.rpc_stats= snapshot_time: 1783137294.080448221 secs.nsecs start_time: 1783137092.926662457 secs.nsecs elapsed_time: 201.153785764 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: 6 0 0 | 0 0 0 16: 4882 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 3 10 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4892 100 100 | 24 85 85 2: 0 0 100 | 2 7 92 3: 0 0 100 | 1 3 96 4: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 1 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 4 0 0 | 0 0 3 32: 7 0 0 | 0 0 3 64: 12 0 0 | 0 0 3 128: 22 0 1 | 0 0 3 256: 50 1 2 | 0 0 3 512: 104 2 4 | 0 0 3 1024: 166 3 7 | 4 14 17 2048: 422 8 16 | 2 7 25 4096: 828 16 33 | 4 14 39 8192: 1592 32 65 | 8 28 67 16384: 1680 34 100 | 9 32 100 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: 31 0 0 | 0 0 0 8192: 1953 39 40 | 0 0 0 16384: 2415 49 89 | 0 0 0 32768: 576 11 101 | 2 7 7 65536: 30 0 102 | 20 71 78 131072: 1 0 102 | 6 21 100 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-ffff984d46051800.rpc_stats= snapshot_time: 1783137294.080587953 secs.nsecs start_time: 1783137092.926696660 secs.nsecs elapsed_time: 201.153891293 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-ffff984d46051800.read_ahead_stats= snapshot_time 1783137294.099669842 secs.nsecs start_time 1783137092.946156164 secs.nsecs elapsed_time 201.153513678 secs.nsecs hits 73243 samples [pages] misses 4892 samples [pages] readpage_not_consecutive 7373 samples [pages] zero_size_window 73243 samples [pages] failed_to_fast_read 4892 samples [pages] readahead_pages 4892 samples [pages] 1 15 73243