== sanity test 101a: check read-ahead for random reads === 10:48:58 (1786978138) nreads: 10000 file size: 96MB 180.391819s, 2.68986MB/s osc.lustre-OST0000-osc-ffff8baa7b856000.rpc_stats= snapshot_time: 1786978339.137861162 secs.nsecs start_time: 1786978140.405308516 secs.nsecs elapsed_time: 198.732552646 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: 0 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 4865 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: 4869 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 5 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 12 0 0 | 0 0 4 128: 21 0 1 | 0 0 4 256: 50 1 2 | 0 0 4 512: 100 2 4 | 0 0 4 1024: 184 3 7 | 1 4 8 2048: 424 8 16 | 2 8 16 4096: 811 16 33 | 4 16 32 8192: 1579 32 65 | 8 32 64 16384: 1672 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: 0 0 0 | 0 0 0 4096: 96 1 1 | 0 0 0 8192: 2053 42 44 | 0 0 0 16384: 2160 44 88 | 0 0 0 32768: 631 12 101 | 0 0 0 65536: 44 0 102 | 22 88 88 131072: 0 0 102 | 3 12 100 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-ffff8baa7b856000.rpc_stats= snapshot_time: 1786978339.138113671 secs.nsecs start_time: 1786978140.405342058 secs.nsecs elapsed_time: 198.732771613 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-ffff8baa7b856000.read_ahead_stats= snapshot_time 1786978339.155600832 secs.nsecs start_time 1786978140.424000831 secs.nsecs elapsed_time 198.731600001 secs.nsecs hits 72982 samples [pages] misses 4869 samples [pages] readpage_not_consecutive 7400 samples [pages] zero_size_window 72982 samples [pages] failed_to_fast_read 4869 samples [pages] readahead_pages 4869 samples [pages] 2 15 72982