== sanity test 101a: check read-ahead for random reads === 09:50:03 (1761313803) nreads: 10000 file size: 96MB 54.606561s, 12.0015MB/s osc.lustre-OST0000-osc-ffff9d1144917000.rpc_stats= snapshot_time: 1761313860.636125832 secs.nsecs start_time: 1761313803.991478467 secs.nsecs elapsed_time: 56.644647365 secs.nsecs read RPCs in flight: 0 write 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 osc.lustre-OST0001-osc-ffff9d1144917000.rpc_stats= snapshot_time: 1761313860.636227864 secs.nsecs start_time: 1761313803.991507472 secs.nsecs elapsed_time: 56.644720392 secs.nsecs read RPCs in flight: 0 write 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 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 6605 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: 6602 99 99 | 24 96 96 2: 4 0 100 | 1 4 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 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: 8 0 0 | 0 0 4 64: 19 0 0 | 0 0 4 128: 32 0 1 | 0 0 4 256: 71 1 2 | 0 0 4 512: 135 2 4 | 0 0 4 1024: 256 3 8 | 1 4 8 2048: 573 8 16 | 2 8 16 4096: 1098 16 33 | 4 16 32 8192: 2219 33 66 | 8 32 64 16384: 2184 33 100 | 9 36 100 llite.lustre-ffff9d1144917000.read_ahead_stats= snapshot_time 1761313860.644941102 secs.nsecs start_time 1761313804.003994462 secs.nsecs elapsed_time 56.640946640 secs.nsecs hits 99082 samples [pages] misses 6606 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 99082 samples [pages] failed_to_fast_read 6606 samples [pages]