== sanity test 101a: check read-ahead for random reads === 08:24:49 (1786191889) nreads: 10000 file size: 96MB 105.956120s, 6.1852MB/s osc.lustre-OST0000-osc-ffff924fa0a33800.rpc_stats= snapshot_time: 1786192007.894667733 secs.nsecs start_time: 1786191890.689965107 secs.nsecs elapsed_time: 117.204702626 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: 2 0 0 | 0 0 3 4: 2 0 0 | 0 0 3 8: 5 0 0 | 0 0 3 16: 6539 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: 6548 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 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: 30 0 1 | 0 0 7 256: 70 1 2 | 0 0 7 512: 135 2 4 | 0 0 7 1024: 259 3 8 | 1 3 11 2048: 552 8 16 | 2 7 19 4096: 1090 16 33 | 4 15 34 8192: 2175 33 66 | 8 30 65 16384: 2200 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: 0 0 0 | 0 0 0 2048: 13 0 0 | 0 0 0 4096: 4435 67 67 | 0 0 0 8192: 2185 33 101 | 0 0 0 16384: 68 1 102 | 3 11 11 32768: 2 0 102 | 21 80 92 65536: 0 0 102 | 2 7 100 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-ffff924fa0a33800.rpc_stats= snapshot_time: 1786192007.894810206 secs.nsecs start_time: 1786191890.690079378 secs.nsecs elapsed_time: 117.204730828 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 | 1 25 25 8192: 0 0 0 | 2 50 75 16384: 0 0 0 | 1 25 100 llite.lustre-ffff924fa0a33800.read_ahead_stats= snapshot_time 1786192007.902217303 secs.nsecs start_time 1786191890.701970089 secs.nsecs elapsed_time 117.200247214 secs.nsecs hits 98099 samples [pages] misses 6548 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98099 samples [pages] failed_to_fast_read 6548 samples [pages] readahead_pages 6548 samples [pages] 1 15 98099