On Fri, Nov 06, 2020 at 01:48:29PM +0100, Paolo Bonzini wrote: > On 28/10/20 00:37, Ben Gardon wrote: > > Currently KVM lacks a simple, userspace agnostic, performance benchmark for > > dirty logging. Such a benchmark will be beneficial for ensuring that dirty > > logging performance does not regress, and to give a common baseline for > > validating performance improvements. The dirty log perf test introduced in > > this series builds on aspects of the existing demand paging perf test and > > provides time-based performance metrics for enabling and disabling dirty > > logging, getting the dirty log, and dirtying memory. > > > > While the test currently only has a build target for x86, I expect it will > > work on, or be easily modified to support other architectures. > > > > Ben Gardon (5): > > KVM: selftests: Factor code out of demand_paging_test > > KVM: selftests: Remove address rounding in guest code > > KVM: selftests: Simplify demand_paging_test with timespec_diff_now > > KVM: selftests: Add wrfract to common guest code > > KVM: selftests: Introduce the dirty log perf test > > > > tools/testing/selftests/kvm/.gitignore | 1 + > > tools/testing/selftests/kvm/Makefile | 1 + > > .../selftests/kvm/demand_paging_test.c | 230 ++--------- > > .../selftests/kvm/dirty_log_perf_test.c | 382 ++++++++++++++++++ > > .../selftests/kvm/include/perf_test_util.h | 192 +++++++++ > > .../testing/selftests/kvm/include/test_util.h | 2 + > > tools/testing/selftests/kvm/lib/test_util.c | 22 +- > > 7 files changed, 635 insertions(+), 195 deletions(-) > > create mode 100644 tools/testing/selftests/kvm/dirty_log_perf_test.c > > create mode 100644 tools/testing/selftests/kvm/include/perf_test_util.h > > > > Queued, thanks. Why would you do that? Peter reviewed this, making several comments, such as not to put non-inline functions in header files. Ben took the time to respin the series, posting a v2. It makes no sense to pick up v1 after they put in that additional effort. drew
