== sanity test 101a: check read-ahead for random reads === 18:27:54 (1736983674) nreads: 10000 file size: 96MB 23.995092s, 27.3123MB/s osc.lustre-OST0000-osc-ffff8800b6cef800.rpc_stats= snapshot_time: 1736983700.130342709 secs.nsecs start_time: 1736983675.140967816 secs.nsecs elapsed_time: 24.989374893 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 pending write pages: 4 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-ffff8800b6cef800.rpc_stats= snapshot_time: 1736983700.130496883 secs.nsecs start_time: 1736983675.141028266 secs.nsecs elapsed_time: 24.989468617 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 pending write pages: 969 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: 6614 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: 6614 100 100 | 24 100 100 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: 75 1 2 | 0 0 4 512: 136 2 4 | 0 0 4 1024: 259 3 8 | 1 4 8 2048: 588 8 17 | 2 8 16 4096: 1120 16 33 | 4 16 33 8192: 2242 33 67 | 8 33 66 16384: 2124 32 100 | 8 33 100 llite.lustre-ffff8800b6cef800.read_ahead_stats= snapshot_time 1736983700.134486538 secs.nsecs start_time 1736983675.145334962 secs.nsecs elapsed_time 24.989151576 secs.nsecs hits 99210 samples [pages] misses 6614 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 99210 samples [pages] failed_to_fast_read 6614 samples [pages]