== sanity test 101a: check read-ahead for random reads === 20:38:08 (1736991488) nreads: 10000 file size: 96MB 12.273125s, 53.398MB/s osc.lustre-OST0000-osc-ffff8800aa862000.rpc_stats= snapshot_time: 1736991501.966723472 secs.nsecs start_time: 1736991488.983361972 secs.nsecs elapsed_time: 12.983361500 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-ffff8800aa862000.rpc_stats= snapshot_time: 1736991501.966870267 secs.nsecs start_time: 1736991488.983442292 secs.nsecs elapsed_time: 12.983427975 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: 1 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: 5095 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 | 99 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5096 100 100 | 82 82 82 2: 0 0 100 | 15 15 97 3: 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: 5 0 0 | 0 0 1 32: 7 0 0 | 0 0 1 64: 15 0 0 | 0 0 1 128: 25 0 1 | 0 0 1 256: 55 1 2 | 1 1 2 512: 106 2 4 | 2 2 4 1024: 208 4 8 | 4 4 8 2048: 438 8 16 | 8 8 16 4096: 869 17 33 | 16 16 32 8192: 1691 33 67 | 32 32 64 16384: 1674 32 100 | 35 35 100 llite.lustre-ffff8800aa862000.read_ahead_stats= snapshot_time 1736991501.970235127 secs.nsecs start_time 1736991488.987027158 secs.nsecs elapsed_time 12.983207969 secs.nsecs hits 76424 samples [pages] misses 5096 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 76424 samples [pages] failed_to_fast_read 5096 samples [pages]