== sanity test 101a: check read-ahead for random reads === 12:22:21 (1785946941) nreads: 10000 file size: 96MB 180.486634s, 2.64451MB/s osc.lustre-OST0000-osc-ffff8eb205310000.rpc_stats= snapshot_time: 1785947149.167893435 secs.nsecs start_time: 1785946943.578385020 secs.nsecs elapsed_time: 205.589508415 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 | 1 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 1 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 1 100 100 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 | 1 100 100 osc.lustre-OST0001-osc-ffff8eb205310000.rpc_stats= snapshot_time: 1785947149.167988495 secs.nsecs start_time: 1785946943.578411875 secs.nsecs elapsed_time: 205.589576620 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 | 0 0 0 2: 0 0 0 | 0 0 0 4: 3 0 0 | 0 0 0 8: 1 0 0 | 0 0 0 16: 3694 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 100 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 3698 100 100 | 95 95 95 2: 0 0 100 | 4 4 99 3: 0 0 100 | 1 1 100 read write offset rpcs % cum % | rpcs % cum % 0: 3 0 0 | 1 1 1 1: 0 0 0 | 0 0 1 2: 0 0 0 | 0 0 1 4: 0 0 0 | 0 0 1 8: 0 0 0 | 0 0 1 16: 3 0 0 | 0 0 1 32: 6 0 0 | 0 0 1 64: 11 0 0 | 0 0 1 128: 19 0 1 | 0 0 1 256: 38 1 2 | 1 1 2 512: 79 2 4 | 2 2 4 1024: 150 4 8 | 4 4 8 2048: 325 8 17 | 8 8 16 4096: 629 17 34 | 16 16 32 8192: 1237 33 67 | 32 32 64 16384: 1198 32 100 | 36 36 100 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: 113 3 3 | 0 0 0 8192: 1002 27 30 | 1 1 1 16384: 1637 44 74 | 13 13 14 32768: 869 23 97 | 71 71 85 65536: 162 4 102 | 15 15 100 131072: 1 0 102 | 1 1 101 262144: 0 0 102 | 0 0 101 524288: 0 0 102 | 0 0 101 1048576: 0 0 102 | 0 0 101 2097152: 0 0 102 | 0 0 101 4194304: 0 0 102 | 0 0 101 8388608: 0 0 102 | 0 0 101 16777216: 0 0 102 | 0 0 101 33554432: 0 0 102 | 0 0 101 67108864: 0 0 102 | 0 0 101 134217728: 0 0 102 | 0 0 101 268435456: 0 0 102 | 0 0 101 536870912: 0 0 102 | 0 0 101 1073741824: 0 0 102 | 0 0 101 llite.lustre-ffff8eb205310000.read_ahead_stats= snapshot_time 1785947149.213431169 secs.nsecs start_time 1785946943.623195439 secs.nsecs elapsed_time 205.590235730 secs.nsecs hits 55404 samples [pages] misses 3698 samples [pages] readpage_not_consecutive 7279 samples [pages] zero_size_window 55404 samples [pages] failed_to_fast_read 3698 samples [pages] readahead_pages 3698 samples [pages] 3 15 55404