== sanity test 101a: check read-ahead for random reads === 14:20:33 (1788286833) nreads: 10000 file size: 96MB 180.272692s, 3.11734MB/s osc.lustre-OST0000-osc-ffff9de70a61c000.rpc_stats= snapshot_time: 1788287031.093279668 secs.nsecs start_time: 1788286834.601461663 secs.nsecs elapsed_time: 196.491818005 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: 2 0 0 | 1 3 3 2: 1 0 0 | 0 0 3 4: 2 0 0 | 0 0 3 8: 6 0 0 | 0 0 3 16: 5637 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5647 99 99 | 25 96 96 2: 1 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 4 0 0 | 0 0 7 32: 8 0 0 | 0 0 7 64: 15 0 0 | 0 0 7 128: 24 0 1 | 0 0 7 256: 60 1 2 | 0 0 7 512: 120 2 4 | 0 0 7 1024: 209 3 7 | 1 3 11 2048: 485 8 16 | 2 7 19 4096: 924 16 32 | 4 15 34 8192: 1862 32 65 | 8 30 65 16384: 1931 34 100 | 9 34 100 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: 143 2 2 | 0 0 0 8192: 2939 52 54 | 0 0 0 16384: 2302 40 95 | 0 0 0 32768: 387 6 102 | 11 42 42 65536: 9 0 102 | 15 57 100 131072: 0 0 102 | 0 0 100 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-ffff9de70a61c000.rpc_stats= snapshot_time: 1788287031.093410789 secs.nsecs start_time: 1788286834.601571052 secs.nsecs elapsed_time: 196.491839737 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 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 1 25 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 1 25 25 16384: 0 0 0 | 0 0 25 32768: 0 0 0 | 3 75 100 llite.lustre-ffff9de70a61c000.read_ahead_stats= snapshot_time 1788287031.117800134 secs.nsecs start_time 1788286834.611558426 secs.nsecs elapsed_time 196.506241708 secs.nsecs hits 84571 samples [pages] misses 5648 samples [pages] readpage_not_consecutive 8570 samples [pages] zero_size_window 84573 samples [pages] failed_to_fast_read 5648 samples [pages] readahead_pages 5646 samples [pages] 1 15 84571