== sanity test 101a: check read-ahead for random reads === 06:32:54 (1787826774) nreads: 10000 file size: 96MB 180.179810s, 2.65665MB/s osc.lustre-OST0000-osc-ffff8c7358424000.rpc_stats= snapshot_time: 1787826980.137927956 secs.nsecs start_time: 1787826777.380773460 secs.nsecs elapsed_time: 202.757154496 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 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 3 100 100 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 | 1 33 100 osc.lustre-OST0001-osc-ffff8c7358424000.rpc_stats= snapshot_time: 1787826980.138023036 secs.nsecs start_time: 1787826777.380811091 secs.nsecs elapsed_time: 202.757211945 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 | 2 7 7 2: 0 0 0 | 0 0 7 4: 2 0 0 | 0 0 7 8: 3 0 0 | 0 0 7 16: 4782 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: 4787 100 100 | 27 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 7 0 0 | 0 0 11 64: 12 0 0 | 0 0 11 128: 21 0 1 | 0 0 11 256: 48 1 2 | 0 0 11 512: 102 2 4 | 0 0 11 1024: 180 3 7 | 1 3 14 2048: 417 8 16 | 2 7 22 4096: 788 16 33 | 4 14 37 8192: 1563 32 65 | 8 29 66 16384: 1640 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: 0 0 0 | 0 0 0 4096: 129 2 2 | 0 0 0 8192: 2101 43 46 | 1 3 3 16384: 1992 41 88 | 1 3 7 32768: 591 12 100 | 0 0 7 65536: 86 1 102 | 17 62 70 131072: 1 0 102 | 7 25 96 262144: 0 0 102 | 1 3 100 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 llite.lustre-ffff8c7358424000.read_ahead_stats= snapshot_time 1787826980.151468085 secs.nsecs start_time 1787826777.402164325 secs.nsecs elapsed_time 202.749303760 secs.nsecs hits 71731 samples [pages] misses 4787 samples [pages] readpage_not_consecutive 7300 samples [pages] zero_size_window 71731 samples [pages] failed_to_fast_read 4787 samples [pages] readahead_pages 4787 samples [pages] 2 15 71731