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From: Peter Xu <peterx@redhat.com>
To: Ben Gardon <bgardon@google.com>
Cc: linux-kernel@vger.kernel.org, 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 16:23:58 -0500	[thread overview]
Message-ID: <20201102212358.GB20600@xz-x1> (raw)
In-Reply-To: <20201027233733.1484855-2-bgardon@google.com>

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.

> 
> 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").

Thanks,

-- 
Peter Xu


  reply	other threads:[~2020-11-02 21:24 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 [this message]
2020-11-02 22:57     ` Ben Gardon
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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