== sanity test 101a: check read-ahead for random reads === 21:57:01 (1775872621) nreads: 10000 file size: 96MB 180.361849s, 2.71865MB/s osc.lustre-OST0000-osc-ffff8a9102e3d000.rpc_stats= snapshot_time: 1775872824.113202764 secs.nsecs start_time: 1775872623.075724853 secs.nsecs elapsed_time: 201.037477911 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO 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 | 3 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 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 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: 0 0 0 | 0 0 0 32: 0 0 0 | 0 0 0 64: 0 0 0 | 0 0 0 128: 0 0 0 | 0 0 0 256: 0 0 0 | 0 0 0 512: 0 0 0 | 0 0 0 1024: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 0 0 0 16384: 0 0 0 | 3 100 100 osc.lustre-OST0001-osc-ffff8a9102e3d000.rpc_stats= snapshot_time: 1775872824.113395814 secs.nsecs start_time: 1775872623.075984812 secs.nsecs elapsed_time: 201.037411002 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO 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 | 1 3 3 2: 3 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 2 0 0 | 1 3 7 16: 4894 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4899 100 100 | 27 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 4 0 0 | 0 0 11 32: 7 0 0 | 0 0 11 64: 13 0 0 | 0 0 11 128: 21 0 1 | 0 0 11 256: 52 1 2 | 0 0 11 512: 104 2 4 | 0 0 11 1024: 182 3 7 | 1 3 14 2048: 422 8 16 | 2 7 22 4096: 810 16 33 | 4 14 37 8192: 1594 32 65 | 8 29 66 16384: 1684 34 100 | 9 33 100 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 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: 0 0 0 | 0 0 0 32: 0 0 0 | 0 0 0 64: 0 0 0 | 0 0 0 128: 0 0 0 | 0 0 0 256: 0 0 0 | 0 0 0 512: 0 0 0 | 0 0 0 1024: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 65 1 1 | 0 0 0 8192: 1963 40 41 | 0 0 0 16384: 2363 48 89 | 1 3 3 32768: 606 12 102 | 2 7 11 65536: 18 0 102 | 22 81 92 131072: 0 0 102 | 2 7 100 262144: 0 0 102 | 0 0 100 524288: 0 0 102 | 0 0 100 1048576: 0 0 102 | 0 0 100 2097152: 0 0 102 | 0 0 100 4194304: 0 0 102 | 0 0 100 8388608: 0 0 102 | 0 0 100 16777216: 0 0 102 | 0 0 100 33554432: 0 0 102 | 0 0 100 67108864: 0 0 102 | 0 0 100 134217728: 0 0 102 | 0 0 100 268435456: 0 0 102 | 0 0 100 536870912: 0 0 102 | 0 0 100 1073741824: 0 0 102 | 0 0 100 llite.lustre-ffff8a9102e3d000.read_ahead_stats= snapshot_time 1775872824.136873659 secs.nsecs start_time 1775872623.109426876 secs.nsecs elapsed_time 201.027446783 secs.nsecs hits 73361 samples [pages] misses 4899 samples [pages] readpage_not_consecutive 7478 samples [pages] zero_size_window 73361 samples [pages] failed_to_fast_read 4899 samples [pages] readahead_pages 4899 samples [pages] 1 15 73361