== sanity test 101a: check read-ahead for random reads === 13:39:31 (1783964371) nreads: 10000 file size: 96MB 180.253509s, 3.01878MB/s osc.lustre-OST0000-osc-ffff8c1182bca000.rpc_stats= snapshot_time: 1783964571.090726624 secs.nsecs start_time: 1783964372.899614470 secs.nsecs elapsed_time: 198.191112154 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 | 2 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 2 100 100 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 | 1 50 50 32768: 0 0 0 | 1 50 100 osc.lustre-OST0001-osc-ffff8c1182bca000.rpc_stats= snapshot_time: 1783964571.090818253 secs.nsecs start_time: 1783964372.899648363 secs.nsecs elapsed_time: 198.191169890 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 | 2 7 7 2: 1 0 0 | 0 0 7 4: 3 0 0 | 0 0 7 8: 4 0 0 | 1 3 10 16: 5432 99 100 | 0 0 10 32: 0 0 100 | 0 0 10 64: 0 0 100 | 0 0 10 128: 0 0 100 | 0 0 10 256: 0 0 100 | 0 0 10 512: 0 0 100 | 0 0 10 1024: 0 0 100 | 25 89 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5440 100 100 | 27 96 96 2: 0 0 100 | 1 3 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 4 14 14 1: 0 0 0 | 0 0 14 2: 0 0 0 | 0 0 14 4: 0 0 0 | 0 0 14 8: 0 0 0 | 0 0 14 16: 4 0 0 | 0 0 14 32: 7 0 0 | 0 0 14 64: 15 0 0 | 0 0 14 128: 23 0 1 | 0 0 14 256: 54 0 2 | 0 0 14 512: 115 2 4 | 0 0 14 1024: 199 3 7 | 1 3 17 2048: 469 8 16 | 2 7 25 4096: 887 16 32 | 4 14 39 8192: 1792 32 65 | 8 28 67 16384: 1869 34 100 | 9 32 100 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: 408 7 7 | 0 0 0 8192: 2715 49 57 | 0 0 0 16384: 2015 37 94 | 3 10 10 32768: 410 7 101 | 3 10 21 65536: 20 0 102 | 22 78 100 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 llite.lustre-ffff8c1182bca000.read_ahead_stats= snapshot_time 1783964571.109692512 secs.nsecs start_time 1783964372.915820898 secs.nsecs elapsed_time 198.193871614 secs.nsecs hits 81478 samples [pages] misses 5440 samples [pages] readpage_not_consecutive 8298 samples [pages] zero_size_window 81478 samples [pages] failed_to_fast_read 5440 samples [pages] readahead_pages 5440 samples [pages] 1 15 81478