== sanity test 101a: check read-ahead for random reads === 06:47:30 (1788778050) nreads: 10000 file size: 96MB 180.233519s, 2.8304MB/s osc.lustre-OST0000-osc-ffff9386041ac000.rpc_stats= snapshot_time: 1788778254.075604804 secs.nsecs start_time: 1788778052.417986341 secs.nsecs elapsed_time: 201.657618463 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 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 | 2 100 100 osc.lustre-OST0001-osc-ffff9386041ac000.rpc_stats= snapshot_time: 1788778254.076047812 secs.nsecs start_time: 1788778052.418018701 secs.nsecs elapsed_time: 201.658029111 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 7 7 2: 0 0 0 | 0 0 7 4: 1 0 0 | 0 0 7 8: 4 0 0 | 1 3 10 16: 5151 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5156 100 100 | 27 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 6 0 0 | 0 0 14 64: 16 0 0 | 0 0 14 128: 23 0 1 | 0 0 14 256: 52 1 2 | 0 0 14 512: 111 2 4 | 0 0 14 1024: 200 3 8 | 1 3 17 2048: 443 8 16 | 2 7 25 4096: 858 16 33 | 4 14 39 8192: 1660 32 65 | 8 28 67 16384: 1778 34 100 | 9 32 100 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: 104 2 2 | 0 0 0 8192: 2416 46 48 | 0 0 0 16384: 2203 42 91 | 0 0 0 32768: 524 10 101 | 5 17 17 65536: 30 0 102 | 15 53 71 131072: 0 0 102 | 8 28 100 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-ffff9386041ac000.read_ahead_stats= snapshot_time 1788778254.099504647 secs.nsecs start_time 1788778052.448692587 secs.nsecs elapsed_time 201.650812060 secs.nsecs hits 77268 samples [pages] misses 5156 samples [pages] readpage_not_consecutive 7780 samples [pages] zero_size_window 77268 samples [pages] failed_to_fast_read 5156 samples [pages] readahead_pages 5156 samples [pages] 3 15 77268