== sanity test 101a: check read-ahead for random reads === 00:05:14 (1788840314) nreads: 10000 file size: 96MB 180.539915s, 3.35013MB/s osc.lustre-OST0000-osc-ffff953bd2093800.rpc_stats= snapshot_time: 1788840513.128425724 secs.nsecs start_time: 1788840315.715049679 secs.nsecs elapsed_time: 197.413376045 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 | 2 1 1 2: 2 0 0 | 0 0 1 4: 2 0 0 | 0 0 1 8: 3 0 0 | 0 0 1 16: 4673 99 100 | 0 0 1 32: 0 0 100 | 0 0 1 64: 0 0 100 | 0 0 1 128: 0 0 100 | 0 0 1 256: 0 0 100 | 100 98 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4680 100 100 | 100 98 98 2: 0 0 100 | 2 1 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 3 2 2 1: 0 0 0 | 0 0 2 2: 0 0 0 | 0 0 2 4: 0 0 0 | 0 0 2 8: 0 0 0 | 0 0 2 16: 4 0 0 | 0 0 2 32: 6 0 0 | 0 0 2 64: 15 0 0 | 0 0 2 128: 25 0 1 | 0 0 2 256: 48 1 2 | 1 0 3 512: 101 2 4 | 2 1 5 1024: 188 4 8 | 4 3 9 2048: 403 8 16 | 8 7 17 4096: 793 16 33 | 16 15 33 8192: 1556 33 67 | 32 31 64 16384: 1538 32 100 | 36 35 100 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: 57 1 1 | 0 0 0 8192: 1702 36 37 | 0 0 0 16384: 2342 50 87 | 44 43 43 32768: 643 13 101 | 55 53 97 65536: 46 0 102 | 5 4 101 131072: 0 0 102 | 0 0 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 osc.lustre-OST0001-osc-ffff953bd2093800.rpc_stats= snapshot_time: 1788840513.132072277 secs.nsecs start_time: 1788840315.715087149 secs.nsecs elapsed_time: 197.416985128 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 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 3 100 100 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 | 1 33 33 16384: 0 0 0 | 0 0 33 32768: 0 0 0 | 2 66 100 llite.lustre-ffff953bd2093800.read_ahead_stats= snapshot_time 1788840513.161245017 secs.nsecs start_time 1788840315.742924490 secs.nsecs elapsed_time 197.418320527 secs.nsecs hits 70099 samples [pages] misses 4680 samples [pages] readpage_not_consecutive 9223 samples [pages] zero_size_window 70099 samples [pages] failed_to_fast_read 4680 samples [pages] readahead_pages 4680 samples [pages] 1 15 70099