== sanity test 101a: check read-ahead for random reads === 16:21:52 (1787862112) nreads: 10000 file size: 96MB 180.356899s, 3.07591MB/s osc.lustre-OST0000-osc-ffff8d4dfdd18800.rpc_stats= snapshot_time: 1787862316.118771944 secs.nsecs start_time: 1787862114.177758274 secs.nsecs elapsed_time: 201.941013670 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 | 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 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 | 1 33 33 32768: 0 0 0 | 2 66 100 osc.lustre-OST0001-osc-ffff8d4dfdd18800.rpc_stats= snapshot_time: 1787862316.118862766 secs.nsecs start_time: 1787862114.177790499 secs.nsecs elapsed_time: 201.941072267 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 | 2 7 7 2: 2 0 0 | 0 0 7 4: 1 0 0 | 0 0 7 8: 4 0 0 | 0 0 7 16: 5558 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: 5565 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: 15 0 0 | 0 0 11 128: 24 0 1 | 0 0 11 256: 58 1 2 | 0 0 11 512: 118 2 4 | 0 0 11 1024: 202 3 7 | 1 3 14 2048: 475 8 16 | 2 7 22 4096: 909 16 32 | 4 14 37 8192: 1832 32 65 | 8 29 66 16384: 1915 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: 285 5 5 | 0 0 0 8192: 2822 50 55 | 1 3 3 16384: 2179 39 94 | 1 3 7 32768: 396 7 102 | 1 3 11 65536: 15 0 102 | 18 66 77 131072: 0 0 102 | 6 22 100 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-ffff8d4dfdd18800.read_ahead_stats= snapshot_time 1787862316.130613818 secs.nsecs start_time 1787862114.191859422 secs.nsecs elapsed_time 201.938754396 secs.nsecs hits 83338 samples [pages] misses 5565 samples [pages] readpage_not_consecutive 8460 samples [pages] zero_size_window 83338 samples [pages] failed_to_fast_read 5565 samples [pages] readahead_pages 5565 samples [pages] 1 15 83338