== sanity test 101a: check read-ahead for random reads === 16:41:05 (1775767265) nreads: 10000 file size: 96MB 180.607720s, 2.98963MB/s osc.lustre-OST0000-osc-ffff8b20ca6d2000.rpc_stats= snapshot_time: 1775767464.109402167 secs.nsecs start_time: 1775767267.400302372 secs.nsecs elapsed_time: 196.709099795 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 | 1 50 50 16384: 0 0 0 | 1 50 100 osc.lustre-OST0001-osc-ffff8b20ca6d2000.rpc_stats= snapshot_time: 1775767464.109495249 secs.nsecs start_time: 1775767267.400346715 secs.nsecs elapsed_time: 196.709148534 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: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 6 0 0 | 1 3 10 16: 5415 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: 5422 100 100 | 27 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 7 0 0 | 0 0 14 64: 15 0 0 | 0 0 14 128: 23 0 1 | 0 0 14 256: 55 1 2 | 0 0 14 512: 115 2 4 | 0 0 14 1024: 202 3 7 | 1 3 17 2048: 472 8 16 | 2 7 25 4096: 890 16 32 | 4 14 39 8192: 1780 32 65 | 8 28 67 16384: 1853 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: 1 0 0 | 0 0 0 4096: 141 2 2 | 0 0 0 8192: 2606 48 50 | 0 0 0 16384: 2406 44 95 | 2 7 7 32768: 387 7 102 | 9 32 39 65536: 10 0 102 | 17 60 100 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-ffff8b20ca6d2000.read_ahead_stats= snapshot_time 1775767464.120031916 secs.nsecs start_time 1775767267.417595630 secs.nsecs elapsed_time 196.702436286 secs.nsecs hits 81205 samples [pages] misses 5422 samples [pages] readpage_not_consecutive 8234 samples [pages] zero_size_window 81205 samples [pages] failed_to_fast_read 5422 samples [pages] readahead_pages 5421 samples [pages] 4 15 81205