== sanity test 101a: check read-ahead for random reads === 10:07:47 (1788530867) nreads: 10000 file size: 96MB 180.284325s, 2.79506MB/s osc.lustre-OST0000-osc-ffff96f58822a000.rpc_stats= snapshot_time: 1788531073.220194847 secs.nsecs start_time: 1788530869.607331060 secs.nsecs elapsed_time: 203.612863787 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: 0 0 0 | 0 0 0 8: 6 0 0 | 0 0 0 16: 5025 99 100 | 1 3 3 32: 0 0 100 | 1 3 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: 5031 100 100 | 25 92 92 2: 0 0 100 | 2 7 100 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: 6 0 0 | 2 7 11 64: 11 0 0 | 0 0 11 128: 14 0 0 | 0 0 11 256: 43 0 1 | 0 0 11 512: 93 1 3 | 0 0 11 1024: 195 3 7 | 1 3 14 2048: 433 8 15 | 2 7 22 4096: 849 16 32 | 4 14 37 8192: 1638 32 65 | 8 29 66 16384: 1740 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: 157 3 3 | 0 0 0 8192: 2255 44 47 | 0 0 0 16384: 2042 40 88 | 1 3 3 32768: 645 12 101 | 2 7 11 65536: 50 0 102 | 19 70 81 131072: 0 0 102 | 5 18 100 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-ffff96f58822a000.rpc_stats= snapshot_time: 1788531073.220366366 secs.nsecs start_time: 1788530869.607368095 secs.nsecs elapsed_time: 203.612998271 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-ffff96f58822a000.read_ahead_stats= snapshot_time 1788531073.240738371 secs.nsecs start_time 1788530869.626185928 secs.nsecs elapsed_time 203.614552443 secs.nsecs hits 75361 samples [pages] misses 5031 samples [pages] readpage_not_consecutive 7685 samples [pages] zero_size_window 75361 samples [pages] failed_to_fast_read 5031 samples [pages] readahead_pages 5031 samples [pages] 4 15 75361