== sanity test 101a: check read-ahead for random reads === 12:32:18 (1785947538) nreads: 10000 file size: 96MB 180.068777s, 2.31472MB/s osc.lustre-OST0000-osc-ffff8aab586f7800.rpc_stats= snapshot_time: 1785947743.135267736 secs.nsecs start_time: 1785947540.120393472 secs.nsecs elapsed_time: 203.014874264 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: 1 0 0 | 0 0 3 8: 1 0 0 | 1 3 7 16: 4153 99 100 | 0 0 7 32: 0 0 100 | 0 0 7 64: 0 0 100 | 0 0 7 128: 0 0 100 | 0 0 7 256: 0 0 100 | 0 0 7 512: 0 0 100 | 0 0 7 1024: 0 0 100 | 25 92 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 4157 100 100 | 26 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 4 0 0 | 3 11 11 1: 0 0 0 | 0 0 11 2: 0 0 0 | 0 0 11 4: 0 0 0 | 0 0 11 8: 0 0 0 | 0 0 11 16: 3 0 0 | 0 0 11 32: 6 0 0 | 0 0 11 64: 11 0 0 | 0 0 11 128: 20 0 1 | 0 0 11 256: 41 0 2 | 0 0 11 512: 90 2 4 | 0 0 11 1024: 160 3 8 | 1 3 14 2048: 362 8 16 | 2 7 22 4096: 681 16 33 | 4 14 37 8192: 1360 32 65 | 8 29 66 16384: 1419 34 100 | 9 33 100 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: 322 7 7 | 0 0 0 8192: 1284 30 38 | 0 0 0 16384: 1841 44 82 | 0 0 0 32768: 684 16 99 | 3 11 11 65536: 121 2 102 | 21 77 88 131072: 3 0 102 | 3 11 100 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-ffff8aab586f7800.rpc_stats= snapshot_time: 1785947743.135398345 secs.nsecs start_time: 1785947540.120425244 secs.nsecs elapsed_time: 203.014973101 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 | 3 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 66 66 2: 0 0 0 | 1 33 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 3 100 100 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 66 66 32768: 0 0 0 | 1 33 100 llite.lustre-ffff8aab586f7800.read_ahead_stats= snapshot_time 1785947743.149107790 secs.nsecs start_time 1785947540.143775471 secs.nsecs elapsed_time 203.005332319 secs.nsecs hits 62274 samples [pages] misses 4157 samples [pages] readpage_not_consecutive 6357 samples [pages] zero_size_window 62274 samples [pages] failed_to_fast_read 4157 samples [pages] readahead_pages 4157 samples [pages] 1 15 62274