== sanity test 101a: check read-ahead for random reads === 18:31:58 (1736983918) nreads: 10000 file size: 96MB 13.025844s, 50.3123MB/s osc.lustre-OST0000-osc-ffff8800a8187000.rpc_stats= snapshot_time: 1736983932.538470170 secs.nsecs start_time: 1736983918.685265057 secs.nsecs elapsed_time: 13.853205113 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-ffff8800a8187000.rpc_stats= snapshot_time: 1736983932.538602783 secs.nsecs start_time: 1736983918.685331543 secs.nsecs elapsed_time: 13.853271240 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: 5097 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: 5097 100 100 | 79 79 79 2: 0 0 100 | 19 19 98 3: 0 0 100 | 1 1 100 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: 437 8 16 | 8 8 16 4096: 870 17 33 | 16 16 32 8192: 1690 33 67 | 32 32 64 16384: 1676 32 100 | 35 35 100 llite.lustre-ffff8800a8187000.read_ahead_stats= snapshot_time 1736983932.542277534 secs.nsecs start_time 1736983918.689050454 secs.nsecs elapsed_time 13.853227080 secs.nsecs hits 76454 samples [pages] misses 5097 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 76454 samples [pages] failed_to_fast_read 5097 samples [pages]