Source: thenewstack.io
An Intro to the Linux Memory Access Workload Simulator (masim)
The memory subsystem is one of the most critical areas of the Linux kernel, and consequently, it must be performant, stable and reliable. Over the years, many tools and mechanisms have been developed to help improve the memory subsystem.
Another useful tool developed for the memory subsystem is https://github.com/sjp38/masim, a userspace tool used to simulate intensive memory access workloads to test the behavior and performance of the memory system.
If another access pattern was defined for this phase with a probability of 40, it would get a smaller share of memory accesses than the pattern defined above.
In this example, we are generating a workload to only write to the memory and also use madvise to direct the kernel about memory access patterns and optimize performance.
Another useful tool developed for the memory subsystem is https://github.com/sjp38/masim, a userspace tool used to simulate intensive memory access workloads to test the behavior and performance of the memory system.
If another access pattern was defined for this phase with a probability of 40, it would get a smaller share of memory accesses than the pattern defined above.
In this example, we are generating a workload to only write to the memory and also use madvise to direct the kernel about memory access patterns and optimize performance.
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