== sanity test 101a: check read-ahead for random reads === 08:33:45 (1787315625) nreads: 10000 file size: 96MB 180.986314s, 3.05544MB/s osc.lustre-OST0000-osc-ffff916bc5084800.rpc_stats= snapshot_time: 1787315828.126839530 secs.nsecs start_time: 1787315627.247175049 secs.nsecs elapsed_time: 200.879664481 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 3 3 2: 0 0 0 | 0 0 3 4: 2 0 0 | 0 0 3 8: 3 0 0 | 0 0 3 16: 5597 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: 5602 100 100 | 25 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 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: 6 0 0 | 0 0 7 64: 18 0 0 | 0 0 7 128: 26 0 1 | 0 0 7 256: 58 1 2 | 0 0 7 512: 121 2 4 | 0 0 7 1024: 214 3 8 | 1 3 11 2048: 479 8 16 | 2 7 19 4096: 919 16 33 | 4 15 34 8192: 1831 32 65 | 8 30 65 16384: 1921 34 100 | 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: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 122 2 2 | 0 0 0 8192: 2981 53 55 | 0 0 0 16384: 2337 41 97 | 1 3 3 32768: 283 5 102 | 2 7 11 65536: 10 0 102 | 21 80 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 osc.lustre-OST0001-osc-ffff916bc5084800.rpc_stats= snapshot_time: 1787315828.126993373 secs.nsecs start_time: 1787315627.247217526 secs.nsecs elapsed_time: 200.879775847 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 | 2 50 50 2: 0 0 0 | 1 25 75 3: 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 | 0 0 0 4096: 0 0 0 | 0 0 0 8192: 0 0 0 | 1 25 25 16384: 0 0 0 | 2 50 75 32768: 0 0 0 | 1 25 100 llite.lustre-ffff916bc5084800.read_ahead_stats= snapshot_time 1787315828.145241058 secs.nsecs start_time 1787315627.262397426 secs.nsecs elapsed_time 200.882843632 secs.nsecs hits 83961 samples [pages] misses 5602 samples [pages] readpage_not_consecutive 8433 samples [pages] zero_size_window 83961 samples [pages] failed_to_fast_read 5602 samples [pages] readahead_pages 5602 samples [pages] 2 15 83961