== sanity test 101a: check read-ahead for random reads === 11:24:36 (1790954676) nreads: 10000 file size: 96MB 180.583492s, 3.15226MB/s osc.lustre-OST0000-osc-ffff94cf79012800.rpc_stats= snapshot_time: 1790954877.111752907 secs.nsecs start_time: 1790954678.094695612 secs.nsecs elapsed_time: 199.017057295 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 osc.lustre-OST0001-osc-ffff94cf79012800.rpc_stats= snapshot_time: 1790954877.111854969 secs.nsecs start_time: 1790954678.094953927 secs.nsecs elapsed_time: 199.016901042 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: 2 0 0 | 0 0 0 8: 5 0 0 | 0 0 0 16: 5688 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: 5695 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 8 0 0 | 0 0 4 64: 17 0 0 | 0 0 4 128: 24 0 1 | 0 0 4 256: 60 1 2 | 0 0 4 512: 119 2 4 | 0 0 4 1024: 212 3 7 | 1 4 8 2048: 483 8 16 | 2 8 16 4096: 931 16 32 | 4 16 32 8192: 1875 32 65 | 8 32 64 16384: 1955 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: 652 11 11 | 0 0 0 8192: 2798 49 60 | 0 0 0 16384: 1925 33 94 | 0 0 0 32768: 427 7 101 | 6 24 24 65536: 28 0 102 | 18 72 96 131072: 0 0 102 | 1 4 100 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 llite.lustre-ffff94cf79012800.read_ahead_stats= snapshot_time 1790954877.146052334 secs.nsecs start_time 1790954678.118466668 secs.nsecs elapsed_time 199.027585666 secs.nsecs hits 85328 samples [pages] misses 5695 samples [pages] readpage_not_consecutive 8681 samples [pages] zero_size_window 85328 samples [pages] failed_to_fast_read 5695 samples [pages] readahead_pages 5695 samples [pages] 3 15 85328