== sanity test 101a: check read-ahead for random reads === 23:15:47 (1761102947) nreads: 10000 file size: 96MB 73.721570s, 8.88966MB/s osc.lustre-OST0000-osc-ffff9237479e8800.rpc_stats= snapshot_time: 1761103032.904666898 secs.nsecs start_time: 1761102948.570381844 secs.nsecs elapsed_time: 84.334285054 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 32 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 0 0 66 4: 0 0 0 | 0 0 66 8: 0 0 0 | 1 33 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 3 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 osc.lustre-OST0001-osc-ffff9237479e8800.rpc_stats= snapshot_time: 1761103032.904772001 secs.nsecs start_time: 1761102948.570456797 secs.nsecs elapsed_time: 84.334315204 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 32 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 1 0 0 | 2 1 1 2: 3 0 0 | 0 0 1 4: 5 0 0 | 0 0 1 8: 3 0 0 | 0 0 1 16: 4997 99 100 | 0 0 1 32: 0 0 100 | 0 0 1 64: 0 0 100 | 0 0 1 128: 0 0 100 | 0 0 1 256: 0 0 100 | 100 98 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5009 100 100 | 101 99 99 2: 0 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 3 2 2 1: 0 0 0 | 0 0 2 2: 0 0 0 | 0 0 2 4: 0 0 0 | 0 0 2 8: 0 0 0 | 0 0 2 16: 6 0 0 | 0 0 2 32: 7 0 0 | 0 0 2 64: 16 0 0 | 0 0 2 128: 27 0 1 | 0 0 2 256: 52 1 2 | 1 0 3 512: 108 2 4 | 2 1 5 1024: 203 4 8 | 4 3 9 2048: 429 8 16 | 8 7 17 4096: 853 17 34 | 16 15 33 8192: 1666 33 67 | 32 31 64 16384: 1639 32 100 | 36 35 100 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 llite.lustre-ffff9237479e8800.read_ahead_stats= snapshot_time 1761103032.913850112 secs.nsecs start_time 1761102948.583836828 secs.nsecs elapsed_time 84.330013284 secs.nsecs hits 74959 samples [pages] misses 5009 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 74960 samples [pages] failed_to_fast_read 5009 samples [pages] readahead_pages 5008 samples [pages] 1 15 74959