Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Fri, 30 Nov 2018 22:21:40 +0800
From:   leo.yan@linaro.org
To:     Jiri Olsa <jolsa@redhat.com>
Cc:     Arnaldo Carvalho de Melo <acme@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Andi Kleen <ak@linux.intel.com>, linux-kernel@vger.kernel.org,
        Daniel Thompson <daniel.thompson@linaro.org>
Subject: Re: [PATCH] perf evsel: Correct clock unit to nanosecond
Message-ID: <20181130142140.GB11833@leoy-ThinkPad-X240s>
References: <1543572365-11706-1-git-send-email-leo.yan@linaro.org>
 <20181130102154.GA3617@krava>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20181130102154.GA3617@krava>
User-Agent: Mutt/1.10+31 (9cdd884) (2018-06-19)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Fri, Nov 30, 2018 at 11:21:54AM +0100, Jiri Olsa wrote:
> On Fri, Nov 30, 2018 at 06:06:05PM +0800, Leo Yan wrote:
> > Since commit 0aa802a79469 ("perf stat: Get rid of extra clock display
> > function"), the cpu and task clock unit has been changed from
> > nanosecond value to millisecond value.  This introduces confusion for
> > CPU run time statistics, we can see in below flow the clock value is
> > scaled from nanosecond value to millisecond value; but this is
> > contradiction with statistics type 'STAT_NSECS', which always takes
> > clock as nanosecond unit.

[...]

> there was fix for this recently, could you please check
> if it's working for you:
>   6e269c85dcea perf stat: Fix shadow stats for clock events

Ah, I missed this patch ...

Yeah, I tested this patch and can confirm this patch fixes
this issue.

Thanks,
Leo Yan