TLB flush tests #10
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TLB flush tests #10
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This test case is designed to measure the performance of tlb flush. Each thread/process maps a separated private file mapping to memory, and writes to a page before initiating a tlb flush by madvise(MADV_DONTNEED), subsequent access of this page will result in on-demand zero page. Additionally, it is also a tlb flush sensitive workload to verify the behavior of tlb hardware, the assertion fails immediately once tlb flush failure. We have double checked it by hacking Linux kernel to skip tlb flush manually. Suggested-by: Dave Hansen <dave.hansen@intel.com> Signed-off-by: Kemi Wang <kemi.wang@intel.com>
This test case is designed to measure the performance of tlb flush. Each thread/process has an anonymous private mappings, and writes to a page before initiationg a tlb flush by madvise(MADV_DONTNEED), subsequent access of this page will result in zero-fill-on-demand pages for anonymous private mapping. Suggested-by: Dave Hansen <dave.hansen@intel.com> Signed-off-by: Kemi Wang <kemi.wang@intel.com>
This test case is designed to measure the performance of tlb flush. Each thread/process maps a separated shared file mapping to memory, and writes to a page before initiating a tlb flush by madvise(MADV_DONTNEED), subsequent access of this page will result in repopulating the memory contents of the up-to-date version of the underlying file. Based on the tlb_flush1 test by Kemi Wang. Signed-off-by: Amitay Isaacs <amitay@ozlabs.org>
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This is rework of pull #6.