== sanity test 101a: check read-ahead for random reads === 20:45:16 (1784940316) nreads: 10000 file size: 96MB 180.149122s, 3.14894MB/s osc.lustre-OST0000-osc-ffff996303da0800.rpc_stats= snapshot_time: 1784940517.150138129 secs.nsecs start_time: 1784940317.743906084 secs.nsecs elapsed_time: 199.406232045 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 | 2 100 100 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 | 0 0 0 16384: 0 0 0 | 2 100 100 osc.lustre-OST0001-osc-ffff996303da0800.rpc_stats= snapshot_time: 1784940517.150247672 secs.nsecs start_time: 1784940317.743960888 secs.nsecs elapsed_time: 199.406286784 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: 2 0 0 | 2 7 7 2: 0 0 0 | 0 0 7 4: 4 0 0 | 0 0 7 8: 3 0 0 | 1 3 10 16: 5680 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5689 100 100 | 26 92 92 2: 0 0 100 | 1 3 96 3: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 5 0 0 | 0 0 14 32: 7 0 0 | 0 0 14 64: 19 0 0 | 0 0 14 128: 26 0 1 | 0 0 14 256: 60 1 2 | 0 0 14 512: 119 2 4 | 0 0 14 1024: 221 3 8 | 1 3 17 2048: 481 8 16 | 2 7 25 4096: 943 16 33 | 4 14 39 8192: 1877 32 66 | 8 28 67 16384: 1927 33 100 | 9 32 100 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: 329 5 5 | 0 0 0 8192: 2993 52 58 | 0 0 0 16384: 2186 38 96 | 3 10 10 32768: 306 5 102 | 3 10 21 65536: 10 0 102 | 20 71 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-ffff996303da0800.read_ahead_stats= snapshot_time 1784940517.182187449 secs.nsecs start_time 1784940317.755525546 secs.nsecs elapsed_time 199.426661903 secs.nsecs hits 85200 samples [pages] misses 5689 samples [pages] readpage_not_consecutive 8651 samples [pages] zero_size_window 85202 samples [pages] failed_to_fast_read 5689 samples [pages] readahead_pages 5687 samples [pages] 2 15 85200