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Date:   Tue, 11 Apr 2023 03:25:12 +0100
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On Tue, Apr 11, 2023 at 09:25:16AM +0800, kernel test robot wrote:
> kernel test robot noticed a -8.5% regression of stress-ng.mmapaddr.ops_per_sec on:

Assuming this is the test in question:

https://github.com/ColinIanKing/stress-ng/blob/master/stress-mmapaddr.c

then yes, this is expected.  The test calls mmap() and munmap() a lot,
and we've made those slower in order to fix a bug.

While it does take pagefaults (which is a better test than some
microbenchmarks), it only takes one pagefault per call to mmap() and
munmap(), which is not representative of real workloads.

Thanks for running the test.