== sanity test 101a: check read-ahead for random reads === 17:29:57 (1715203797) nreads: 10000 file size: 96MB 12.079347s, 54.2546MB/s osc.lustre-OST0000-osc-ffff8800a7839800.rpc_stats= snapshot_time: 1715203810.568752529 secs.nsecs start_time: 1715203797.708416670 secs.nsecs elapsed_time: 12.860335859 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 pending write pages: 963 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: 6583 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 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 24 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6583 100 100 | 23 95 95 2: 0 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: 73 1 2 | 0 0 4 512: 136 2 4 | 0 0 4 1024: 259 3 8 | 1 4 8 2048: 582 8 17 | 2 8 16 4096: 1113 16 33 | 4 16 33 8192: 2234 33 67 | 8 33 66 16384: 2116 32 100 | 8 33 100 osc.lustre-OST0001-osc-ffff8800a7839800.rpc_stats= snapshot_time: 1715203810.568878006 secs.nsecs start_time: 1715203797.708497438 secs.nsecs elapsed_time: 12.860380568 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 pending write pages: 10 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 llite.lustre-ffff8800a7839800.read_ahead_stats= snapshot_time 1715203810.571649344 secs.nsecs start_time 1715203797.711590270 secs.nsecs elapsed_time 12.860059074 secs.nsecs hits 98742 samples [pages] misses 6583 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98742 samples [pages] failed_to_fast_read 6583 samples [pages]