== sanity test 101a: check read-ahead for random reads === 16:21:03 (1777580463) nreads: 10000 file size: 96MB 180.187622s, 3.12245MB/s osc.lustre-OST0000-osc-ffff99da8e9ce800.rpc_stats= snapshot_time: 1777580666.071251723 secs.nsecs start_time: 1777580465.879370022 secs.nsecs elapsed_time: 200.191881701 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 | 1 50 50 2: 0 0 0 | 1 50 100 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-ffff99da8e9ce800.rpc_stats= snapshot_time: 1777580666.071338953 secs.nsecs start_time: 1777580465.879405712 secs.nsecs elapsed_time: 200.191933241 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 7 7 2: 2 0 0 | 0 0 7 4: 1 0 0 | 0 0 7 8: 8 0 0 | 1 3 10 16: 5607 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: 5619 100 100 | 26 92 92 2: 0 0 100 | 1 3 96 3: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 4 0 0 | 0 0 14 32: 8 0 0 | 0 0 14 64: 16 0 0 | 0 0 14 128: 24 0 1 | 0 0 14 256: 61 1 2 | 0 0 14 512: 118 2 4 | 0 0 14 1024: 206 3 7 | 1 3 17 2048: 486 8 16 | 2 7 25 4096: 922 16 32 | 4 14 39 8192: 1849 32 65 | 8 28 67 16384: 1920 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: 2 0 0 | 0 0 0 4096: 316 5 5 | 1 3 3 8192: 2855 50 56 | 0 0 3 16384: 2206 39 95 | 2 7 10 32768: 358 6 102 | 3 10 21 65536: 14 0 102 | 22 78 100 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-ffff99da8e9ce800.read_ahead_stats= snapshot_time 1777580666.087411185 secs.nsecs start_time 1777580465.905954435 secs.nsecs elapsed_time 200.181456750 secs.nsecs hits 84097 samples [pages] misses 5619 samples [pages] readpage_not_consecutive 8580 samples [pages] zero_size_window 84098 samples [pages] failed_to_fast_read 5619 samples [pages] readahead_pages 5618 samples [pages] 1 15 84097