== sanity test 101a: check read-ahead for random reads === 18:28:02 (1736983682) nreads: 10000 file size: 96MB 21.098213s, 31.0623MB/s osc.lustre-OST0000-osc-ffff8800b3aa9000.rpc_stats= snapshot_time: 1736983704.733914671 secs.nsecs start_time: 1736983682.721756291 secs.nsecs elapsed_time: 22.012158380 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 pending write pages: 9 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 osc.lustre-OST0001-osc-ffff8800b3aa9000.rpc_stats= snapshot_time: 1736983704.734067306 secs.nsecs start_time: 1736983682.721817260 secs.nsecs elapsed_time: 22.012250046 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 pending write pages: 196 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 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: 5075 100 100 | 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 | 99 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5075 100 100 | 45 45 45 2: 0 0 100 | 46 46 91 3: 0 0 100 | 6 6 97 4: 0 0 100 | 2 2 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 16 0 0 | 0 0 1 128: 27 0 1 | 0 0 1 256: 53 1 2 | 1 1 2 512: 109 2 4 | 2 2 4 1024: 207 4 8 | 4 4 8 2048: 433 8 16 | 8 8 16 4096: 866 17 33 | 16 16 32 8192: 1695 33 67 | 32 32 64 16384: 1656 32 100 | 35 35 100 llite.lustre-ffff8800b3aa9000.read_ahead_stats= snapshot_time 1736983704.738006594 secs.nsecs start_time 1736983682.728683456 secs.nsecs elapsed_time 22.009323138 secs.nsecs hits 76125 samples [pages] misses 5075 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 76125 samples [pages] failed_to_fast_read 5075 samples [pages]