== sanity test 101a: check read-ahead for random reads === 02:17:03 (1738480623) nreads: 10000 file size: 96MB 27.549563s, 23.7884MB/s osc.lustre-OST0000-osc-ffff8800b39e9000.rpc_stats= snapshot_time: 1738480654.889253948 secs.nsecs start_time: 1738480624.355691249 secs.nsecs elapsed_time: 30.533562699 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 50 50 2: 0 0 0 | 1 25 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 1 25 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 osc.lustre-OST0001-osc-ffff8800b39e9000.rpc_stats= snapshot_time: 1738480654.889363713 secs.nsecs start_time: 1738480624.355753356 secs.nsecs elapsed_time: 30.533610357 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 192 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 1 1 2: 0 0 0 | 1 0 2 4: 2 0 0 | 0 0 2 8: 7 0 0 | 0 0 2 16: 4983 99 100 | 0 0 2 32: 0 0 100 | 0 0 2 64: 0 0 100 | 0 0 2 128: 0 0 100 | 0 0 2 256: 0 0 100 | 99 97 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4992 100 100 | 98 96 96 2: 0 0 100 | 3 2 99 3: 0 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 4 3 3 1: 0 0 0 | 0 0 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 0 0 0 | 0 0 3 16: 4 0 0 | 0 0 3 32: 6 0 0 | 0 0 3 64: 17 0 0 | 0 0 3 128: 28 0 1 | 0 0 3 256: 59 1 2 | 1 0 4 512: 111 2 4 | 2 1 6 1024: 213 4 8 | 4 3 10 2048: 456 9 17 | 8 7 18 4096: 911 18 36 | 16 15 34 8192: 1768 35 71 | 32 31 65 16384: 1415 28 100 | 35 34 100 llite.lustre-ffff8800b39e9000.read_ahead_stats= snapshot_time 1738480654.892986968 secs.nsecs start_time 1738480624.359895988 secs.nsecs elapsed_time 30.533090980 secs.nsecs hits 74761 samples [pages] misses 4992 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 74761 samples [pages] failed_to_fast_read 4992 samples [pages] readahead_pages 4992 samples [pages] 3 15 74761