== sanity test 101a: check read-ahead for random reads === 00:01:17 (1788667277) nreads: 10000 file size: 96MB 180.391258s, 2.74109MB/s osc.lustre-OST0000-osc-ffffa02398d59800.rpc_stats= snapshot_time: 1788667478.156274548 secs.nsecs start_time: 1788667279.175098341 secs.nsecs elapsed_time: 198.981176207 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 | 0 0 0 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 0 0 0 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 osc.lustre-OST0001-osc-ffffa02398d59800.rpc_stats= snapshot_time: 1788667478.156363193 secs.nsecs start_time: 1788667279.175130535 secs.nsecs elapsed_time: 198.981232658 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: 2 0 0 | 0 0 0 2: 1 0 0 | 0 0 0 4: 2 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 4989 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4996 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 6 0 0 | 0 0 4 64: 16 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 52 1 2 | 0 0 4 512: 104 2 4 | 0 0 4 1024: 190 3 8 | 1 4 8 2048: 428 8 16 | 2 8 16 4096: 837 16 33 | 4 16 32 8192: 1625 32 65 | 8 32 64 16384: 1706 34 100 | 9 36 100 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: 80 1 1 | 0 0 0 8192: 2148 42 44 | 0 0 0 16384: 2288 45 90 | 0 0 0 32768: 555 11 101 | 1 4 4 65536: 41 0 102 | 22 88 92 131072: 1 0 102 | 2 8 100 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-ffffa02398d59800.read_ahead_stats= snapshot_time 1788667478.190030109 secs.nsecs start_time 1788667279.196954704 secs.nsecs elapsed_time 198.993075405 secs.nsecs hits 74826 samples [pages] misses 4996 samples [pages] readpage_not_consecutive 7541 samples [pages] zero_size_window 74828 samples [pages] failed_to_fast_read 4996 samples [pages] readahead_pages 4994 samples [pages] 1 15 74826