== sanity test 101a: check read-ahead for random reads === 19:06:05 (1787699165) nreads: 10000 file size: 96MB 149.770675s, 4.37576MB/s osc.lustre-OST0000-osc-ffff94ae087ed800.rpc_stats= snapshot_time: 1787699335.292999886 secs.nsecs start_time: 1787699168.331830952 secs.nsecs elapsed_time: 166.961168934 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 50 50 2: 0 0 0 | 0 0 50 4: 0 0 0 | 0 0 50 8: 0 0 0 | 1 50 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 | 1 50 50 16384: 0 0 0 | 1 50 100 osc.lustre-OST0001-osc-ffff94ae087ed800.rpc_stats= snapshot_time: 1787699335.293228434 secs.nsecs start_time: 1787699168.331877594 secs.nsecs elapsed_time: 166.961350840 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: 1 0 0 | 1 0 0 2: 1 0 0 | 0 0 0 4: 4 0 0 | 0 0 0 8: 2 0 0 | 0 0 0 16: 5030 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 | 100 99 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5037 99 99 | 100 99 99 2: 1 0 100 | 1 0 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 2 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 4 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 16 0 0 | 0 0 1 128: 26 0 1 | 0 0 1 256: 53 1 2 | 1 0 2 512: 107 2 4 | 2 1 4 1024: 208 4 8 | 4 3 8 2048: 428 8 16 | 8 7 16 4096: 853 16 33 | 16 15 32 8192: 1672 33 67 | 32 31 64 16384: 1662 32 100 | 36 35 100 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: 432 8 8 | 0 0 0 8192: 2805 55 64 | 4 3 3 16384: 1598 31 95 | 39 38 42 32768: 302 5 101 | 54 53 96 65536: 20 0 102 | 4 3 100 131072: 0 0 102 | 1 0 100 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-ffff94ae087ed800.read_ahead_stats= snapshot_time 1787699335.315549183 secs.nsecs start_time 1787699168.360861920 secs.nsecs elapsed_time 166.954687263 secs.nsecs hits 75445 samples [pages] misses 5038 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 75446 samples [pages] failed_to_fast_read 5038 samples [pages] readahead_pages 5037 samples [pages] 1 15 75445