== sanity test 101a: check read-ahead for random reads === 04:58:16 (1788253096) nreads: 10000 file size: 96MB 172.470064s, 3.79985MB/s osc.lustre-OST0000-osc-ffff9eeac4bc8800.rpc_stats= snapshot_time: 1788253287.424477928 secs.nsecs start_time: 1788253098.078121367 secs.nsecs elapsed_time: 189.346356561 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 | 3 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 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-ffff9eeac4bc8800.rpc_stats= snapshot_time: 1788253287.424569240 secs.nsecs start_time: 1788253098.078153308 secs.nsecs elapsed_time: 189.346415932 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 | 1 3 3 2: 1 0 0 | 0 0 3 4: 1 0 0 | 0 0 3 8: 5 0 0 | 1 3 7 16: 6546 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: 6553 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 5 0 0 | 0 0 11 32: 8 0 0 | 0 0 11 64: 19 0 0 | 0 0 11 128: 32 0 1 | 0 0 11 256: 72 1 2 | 0 0 11 512: 133 2 4 | 0 0 11 1024: 252 3 8 | 1 3 14 2048: 555 8 16 | 2 7 22 4096: 1076 16 32 | 4 14 37 8192: 2159 32 65 | 8 29 66 16384: 2236 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: 965 14 14 | 0 0 0 8192: 3904 59 74 | 0 0 0 16384: 1614 24 98 | 1 3 3 32768: 217 3 102 | 7 25 29 65536: 8 0 102 | 19 70 100 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 llite.lustre-ffff9eeac4bc8800.read_ahead_stats= snapshot_time 1788253287.436163155 secs.nsecs start_time 1788253098.103373215 secs.nsecs elapsed_time 189.332789940 secs.nsecs hits 98181 samples [pages] misses 6553 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98181 samples [pages] failed_to_fast_read 6553 samples [pages] readahead_pages 6553 samples [pages] 1 15 98181