== sanity test 101a: check read-ahead for random reads === 18:52:00 (1787871120) nreads: 10000 file size: 96MB 180.544159s, 3.49488MB/s osc.lustre-OST0000-osc-ffff95fe9249b800.rpc_stats= snapshot_time: 1787871323.087678788 secs.nsecs start_time: 1787871121.841960240 secs.nsecs elapsed_time: 201.245718548 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 | 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 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 osc.lustre-OST0001-osc-ffff95fe9249b800.rpc_stats= snapshot_time: 1787871323.088389384 secs.nsecs start_time: 1787871121.842000640 secs.nsecs elapsed_time: 201.246388744 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 | 0 0 0 2: 1 0 0 | 0 0 0 4: 3 0 0 | 0 0 0 8: 7 0 0 | 0 0 0 16: 6271 99 100 | 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 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6282 100 100 | 25 100 100 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: 30 0 1 | 0 0 4 256: 67 1 2 | 0 0 4 512: 129 2 4 | 0 0 4 1024: 241 3 8 | 1 4 8 2048: 530 8 16 | 2 8 16 4096: 1025 16 32 | 4 16 32 8192: 2067 32 65 | 8 32 64 16384: 2155 34 100 | 9 36 100 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: 539 8 8 | 0 0 0 8192: 3681 58 67 | 0 0 0 16384: 1832 29 96 | 0 0 0 32768: 359 5 102 | 0 0 0 65536: 19 0 102 | 18 72 72 131072: 0 0 102 | 6 24 96 262144: 0 0 102 | 1 4 100 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-ffff95fe9249b800.read_ahead_stats= snapshot_time 1787871323.102457715 secs.nsecs start_time 1787871121.857959310 secs.nsecs elapsed_time 201.244498405 secs.nsecs hits 94055 samples [pages] misses 6282 samples [pages] readpage_not_consecutive 9620 samples [pages] zero_size_window 94055 samples [pages] failed_to_fast_read 6282 samples [pages] readahead_pages 6282 samples [pages] 1 15 94055