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Message-ID: <20201031234418.GE3380099@krava> Date: Sun, 1 Nov 2020 00:44:18 +0100 From: Jiri Olsa <jolsa@...hat.com> To: Peter Zijlstra <peterz@...radead.org> Cc: mingo@...nel.org, acme@...nel.org, mark.rutland@....com, alexander.shishkin@...ux.intel.com, namhyung@...nel.org, linux-kernel@...r.kernel.org, eranian@...gle.com, ak@...ux.intel.com Subject: Re: [PATCH v2 0/4] perf: Fix perf_event_attr::exclusive rotation On Thu, Oct 29, 2020 at 05:27:19PM +0100, Peter Zijlstra wrote: > Hi, > > Andi recently added exclusive event group support to tools/perf: > > https://lkml.kernel.org/r/20201014144255.22699-1-andi@firstfloor.org > > and promptly found that they didn't work as specified. > > (sorry for the resend, I forgot LKML the first time) hm, it's too late for me to check ;-) but should I be able to do this with exclusive event.. running both command at the same time: $ sudo ./perf stat -e cycles:e -I 1000 # time counts unit events 1.002430650 33,946,849 cycles:e 2.004920725 502,399,986 cycles:e (67.57%) 3.007087631 859,745,048 cycles:e (50.00%) 4.009078254 845,860,723 cycles:e (50.00%) 5.011086104 838,457,275 cycles:e (50.00%) $ sudo ./perf stat -e cycles:e -I 1000 # time counts unit events 1.001665466 848,973,404 cycles:e (50.01%) 2.003658048 856,505,255 cycles:e (50.00%) 3.005658022 842,737,973 cycles:e (50.00%) 4.007657797 844,800,598 cycles:e (50.00%) jirka
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