在Linux和ARMv8当中内存访问是要经过cache的,如何把cache的影响去掉而获取真实的内存/RAM的访问情况呢? 这里可以使用ARMv8的PMU,利用perf来读取相关PMU的事件计数,从而‘推导’出内存的访问。以内存读取为例,在测试平台当中可以使用的PMU事件之一就是ll_cache_miss_rd。 写一个进程,读取内存,然后用perf来获取ll_cac...
Performance testing detects potential crashes or memory leaks that could cause performance deterioration over time. Resource Usage Optimization: Testing checks how well the app utilizes system resources (CPU, RAM, network) and whether resource consumption is optimal. This minimizes the risk of slowdowns...
Performance testing evaluates the overall performance of a system, including factors like speed, responsiveness, and stability, under various conditions. Load testing is a subset of performance testing that specifically focuses on assessing how a system handles a specific load or level of concurrent use...
Dual-ported RAM or memory shared between processors must be locked during the tests. It's possible to use a separate CPU just to run the test (I've seen it done), but bus bandwidth will cripple the application processor's performance. Finally, what do you do if the test detects and er...
“Performance testing is as important as functional testing. It should never be underestimated as it helps you determine the performance limits and the levels at which you need to improve performance indicators if necessary. This applies to both the code and hardware parts of the solution.” ...
In the software testing field, we come across terms like performance testing, load testing, stress testing, etc. These terms are often misunderstood and interpreted as the same concepts. However, there is a significant difference between these three testing types and it is important for a tester...
Optimizing these parameters ensures that the hydram performance is enhanced and as a result giving the pump a longer life. The testing projected to solve major problems encountered in the operation of the hydram i.e. tuning of the valves for best performance of the pump. Experimental and ...
Unreliable RAM can cause a multitude of problems. Corrupted data, crashes and unexplained behaviour. Bad RAM is one of the most frustrating computer problems to have as symptoms are often random and hard to pin down. MemTest86 can help diagnose faulty RAM (or rule it out as a cause of sy...
No combination of requested reports is permitted to lock more than 100 MB of RAM and 50-percent processor utilization on the Data Cube Server at one time. Performance-Testing Objectives The following priority objectives focused the performance testing: Verify that there is no performance degradation ...
Based on Microsoft's recommendations in Performance Testing Microsoft .NET Web Applications, memory leaks can be found by monitoring: Memory\Available bytes Process\Private Bytes Process\Working Sets The memory bottleneck means that there isn't enough RAM to go around. This situation cuts down on ...