== sanity test 101a: check read-ahead for random reads === 09:44:21 (1784123061) nreads: 10000 file size: 96MB 67.410605s, 9.72191MB/s osc.lustre-OST0000-osc-ffff94d40522d000.rpc_stats= snapshot_time: 1784123141.041953413 secs.nsecs start_time: 1784123062.349462263 secs.nsecs elapsed_time: 78.692491150 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 3 3 2: 0 0 0 | 0 0 3 4: 2 0 0 | 0 0 3 8: 4 0 0 | 0 0 3 16: 6449 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6456 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 5 0 0 | 0 0 7 32: 8 0 0 | 0 0 7 64: 19 0 0 | 0 0 7 128: 31 0 1 | 0 0 7 256: 71 1 2 | 0 0 7 512: 133 2 4 | 0 0 7 1024: 251 3 8 | 1 3 11 2048: 556 8 16 | 2 7 19 4096: 1081 16 33 | 4 15 34 8192: 2156 33 66 | 8 30 65 16384: 2139 33 100 | 9 34 100 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: 1 0 0 | 0 0 0 2048: 3885 60 60 | 0 0 0 4096: 2609 40 100 | 1 3 3 8192: 115 1 102 | 6 23 26 16384: 0 0 102 | 15 57 84 32768: 0 0 102 | 4 15 100 65536: 0 0 102 | 0 0 100 131072: 0 0 102 | 0 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 osc.lustre-OST0001-osc-ffff94d40522d000.rpc_stats= snapshot_time: 1784123141.042088178 secs.nsecs start_time: 1784123062.349485653 secs.nsecs elapsed_time: 78.692602525 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 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 25 25 2: 0 0 0 | 1 25 50 3: 0 0 0 | 1 25 75 4: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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 | 1 25 25 4096: 0 0 0 | 2 50 75 8192: 0 0 0 | 1 25 100 llite.lustre-ffff94d40522d000.read_ahead_stats= snapshot_time 1784123141.047622513 secs.nsecs start_time 1784123062.357055996 secs.nsecs elapsed_time 78.690566517 secs.nsecs hits 96731 samples [pages] misses 6456 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 96732 samples [pages] failed_to_fast_read 6456 samples [pages] readahead_pages 6455 samples [pages] 2 15 96731