Re: [PATCH] perf intel-pt: Synthesize cycle events

From: Steinar H. Gunderson
Date: Wed Mar 16 2022 - 08:59:17 EST


On Wed, Mar 16, 2022 at 01:19:46PM +0200, Adrian Hunter wrote:
>> I guess the good news is that the perf report coming out of your version
>> looks more likely to me; I have some functions that are around 1% that
>> shouldn't intuitively be that much (and, if I write some Perl to sum up
>> the cycles from the IPC lines in perf script, are more around 0.1%).
>> So perhaps we should stop chasing the difference? I don't know.
> That doesn't sound right. I will look at it more closely in the next few days.

If you need, I can supply the perf.data and binaries, but we're talking
a couple of gigabytes of data (and I don't know immediately if there's
an easy way I can package up everything perf.data references) :-)

/* Steinar */