== sanity test 101a: check read-ahead for random reads === 13:15:01 (1788282901) nreads: 10000 file size: 96MB 156.101062s, 4.19831MB/s osc.lustre-OST0000-osc-ffff916143036000.rpc_stats= snapshot_time: 1788283078.457502185 secs.nsecs start_time: 1788282903.118092103 secs.nsecs elapsed_time: 175.339410082 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: 1 0 0 | 2 1 1 2: 1 0 0 | 0 0 1 4: 4 0 0 | 0 0 1 8: 2 0 0 | 0 0 1 16: 5039 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: 5047 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: 16 0 0 | 0 0 2 128: 26 0 1 | 0 0 2 256: 53 1 2 | 1 0 3 512: 106 2 4 | 2 1 5 1024: 207 4 8 | 4 3 9 2048: 430 8 16 | 8 7 17 4096: 851 16 33 | 16 15 33 8192: 1672 33 66 | 32 31 64 16384: 1673 33 100 | 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: 464 9 9 | 0 0 0 8192: 2611 51 60 | 1 0 0 16384: 1708 33 94 | 44 43 44 32768: 351 6 101 | 44 43 87 65536: 32 0 102 | 15 14 101 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-ffff916143036000.rpc_stats= snapshot_time: 1788283078.458338066 secs.nsecs start_time: 1788282903.118124821 secs.nsecs elapsed_time: 175.340213245 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 | 2 66 66 8192: 0 0 0 | 0 0 66 16384: 0 0 0 | 1 33 100 llite.lustre-ffff916143036000.read_ahead_stats= snapshot_time 1788283078.476921865 secs.nsecs start_time 1788282903.140693598 secs.nsecs elapsed_time 175.336228267 secs.nsecs hits 75582 samples [pages] misses 5047 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75582 samples [pages] failed_to_fast_read 5047 samples [pages] readahead_pages 5046 samples [pages] 1 15 75582