From: Ben Gardon <bgardon@google.com>
To: Peter Xu <peterx@redhat.com>
Cc: LKML <linux-kernel@vger.kernel.org>, kvm <kvm@vger.kernel.org>,
linux-kselftest@vger.kernel.org,
Paolo Bonzini <pbonzini@redhat.com>,
Andrew Jones <drjones@redhat.com>,
Peter Shier <pshier@google.com>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Thomas Huth <thuth@redhat.com>, Peter Feiner <pfeiner@google.com>
Subject: Re: [PATCH 1/5] KVM: selftests: Factor code out of demand_paging_test
Date: Mon, 2 Nov 2020 14:57:01 -0800 [thread overview]
Message-ID: <CANgfPd9OYMRUMtLah7pQCqFVgCi8RQS_whbTHN3tgK+hxB_3gw@mail.gmail.com> (raw)
In-Reply-To: <20201102212358.GB20600@xz-x1>
On Mon, Nov 2, 2020 at 1:24 PM Peter Xu <peterx@redhat.com> wrote:
>
> On Tue, Oct 27, 2020 at 04:37:29PM -0700, Ben Gardon wrote:
> > Much of the code in demand_paging_test can be reused by other, similar
> > multi-vCPU-memory-touching-perfromance-tests. Factor that common code
> > out for reuse.
> >
> > No functional change expected.
>
> Is there explicit reason to put the common code in a header rather than
> perf_test_util.c? No strong opinion on this especially this is test code,
> just curious. Since iiuc .c file is still preferred for things like this.
>
I don't have a compelling reason not to put the common code in a .c
file, and I agree that would probably be a better place for it. I'll
do that in a v2.
> >
> > This series was tested by running the following invocations on an Intel
> > Skylake machine:
> > dirty_log_perf_test -b 20m -i 100 -v 64
> > dirty_log_perf_test -b 20g -i 5 -v 4
> > dirty_log_perf_test -b 4g -i 5 -v 32
> > demand_paging_test -b 20m -v 64
> > demand_paging_test -b 20g -v 4
> > demand_paging_test -b 4g -v 32
> > All behaved as expected.
>
> May move this chunk to the cover letter to avoid keeping it in every commit
> (btw, you mentioned "this series" but I feel like you meant "you verified that
> after applying each of the commits").
I can move the testing description to the cover letter. I can only
definitively say I ran those tests at the last commit in the series,
so I'll amend the description to specify that the commits were tested
all together and not one by one.
>
> Thanks,
>
> --
> Peter Xu
>
next prev parent reply other threads:[~2020-11-02 22:57 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-27 23:37 [PATCH 0/5] Add a dirty logging performance test Ben Gardon
2020-10-27 23:37 ` [PATCH 1/5] KVM: selftests: Factor code out of demand_paging_test Ben Gardon
2020-11-02 21:23 ` Peter Xu
2020-11-02 22:57 ` Ben Gardon [this message]
2020-10-27 23:37 ` [PATCH 2/5] KVM: selftests: Remove address rounding in guest code Ben Gardon
2020-11-02 21:25 ` Peter Xu
2020-10-27 23:37 ` [PATCH 3/5] KVM: selftests: Simplify demand_paging_test with timespec_diff_now Ben Gardon
2020-11-02 21:27 ` Peter Xu
2020-11-02 22:59 ` Ben Gardon
2020-10-27 23:37 ` [PATCH 4/5] KVM: selftests: Add wrfract to common guest code Ben Gardon
2020-10-27 23:37 ` [PATCH 5/5] KVM: selftests: Introduce the dirty log perf test Ben Gardon
2020-11-02 22:21 ` Peter Xu
2020-11-02 23:56 ` Ben Gardon
2020-11-03 1:12 ` Peter Xu
2020-11-03 22:17 ` Ben Gardon
2020-11-03 22:27 ` Peter Xu
2020-11-06 12:48 ` [PATCH 0/5] Add a dirty logging performance test Paolo Bonzini
2020-11-09 9:21 ` Andrew Jones
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