From: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
To: Chris Wilson <chris@chris-wilson.co.uk>, intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH i-g-t 06/11] tests/perf: make enable-disable more reliable
Date: Fri, 4 Aug 2017 13:56:14 +0100 [thread overview]
Message-ID: <a1f50b07-4aff-a112-55e7-97da96b15018@intel.com> (raw)
In-Reply-To: <150184704895.16312.1462133696407557951@mail.alporthouse.com>
On 04/08/17 12:44, Chris Wilson wrote:
> Quoting Lionel Landwerlin (2017-08-04 12:20:35)
>> Estimation of the amount of reports can only refer to periodic ones,
>> as context switch reports completely depend on what happens on the
>> system. Also generate some load to prevent clock frequency changes to
>> impact our measurement.
> If clock frequency is a fundamental invariant required for the test,
> set the clock frequency via sysfs:
> /sys/class/drm/card0/gt_(min|max|boost)_freq_mhz
> -Chris
>
>
I haven't tried setting the boost value, but settings min&max to the
maximum the device can do didn't seem to make any difference.
Reading the current frequency file would sometimes report values 200Mhz
below what was put in the min...
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next prev parent reply other threads:[~2017-08-04 12:56 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-04 11:20 [PATCH i-g-t 00/11] Improve robustness of the i915 perf tests Lionel Landwerlin
2017-08-04 11:20 ` [PATCH i-g-t 01/11] tests/perf: make stream_fd a global variable Lionel Landwerlin
2017-08-04 11:39 ` Chris Wilson
2017-08-22 13:44 ` Lionel Landwerlin
2017-08-04 11:20 ` [PATCH i-g-t 02/11] tests/perf: add per context filtering test for gen8+ Lionel Landwerlin
2017-08-08 14:21 ` Matthew Auld
2017-08-22 11:45 ` Lionel Landwerlin
2017-08-22 11:59 ` Chris Wilson
2017-08-22 13:11 ` Lionel Landwerlin
2017-08-22 13:28 ` Chris Wilson
2017-08-22 13:48 ` Lionel Landwerlin
2017-08-22 13:59 ` Chris Wilson
2017-08-04 11:20 ` [PATCH i-g-t 03/11] tests/perf: update max buffer size for reading reports Lionel Landwerlin
2017-08-04 11:41 ` Chris Wilson
2017-08-04 13:30 ` Lionel Landwerlin
2017-08-04 11:20 ` [PATCH i-g-t 04/11] tests/perf: rc6: try to guess when rc6 is disabled Lionel Landwerlin
2017-08-04 11:20 ` [PATCH i-g-t 05/11] tests/perf: rework oa-exponent test Lionel Landwerlin
2017-08-10 13:15 ` Matthew Auld
2017-08-22 14:56 ` Lionel Landwerlin
2017-08-22 16:13 ` Matthew Auld
2017-08-23 9:31 ` Lionel Landwerlin
2017-08-04 11:20 ` [PATCH i-g-t 06/11] tests/perf: make enable-disable more reliable Lionel Landwerlin
2017-08-04 11:44 ` Chris Wilson
2017-08-04 12:56 ` Lionel Landwerlin [this message]
2017-08-04 11:20 ` [PATCH i-g-t 07/11] tests/perf: make buffer-fill " Lionel Landwerlin
2017-08-10 16:10 ` Matthew Auld
2017-08-04 11:20 ` [PATCH i-g-t 08/11] tests/perf: load gt_boost_freq_mhz as max gt frequency Lionel Landwerlin
2017-08-10 13:21 ` Szwichtenberg, Radoslaw
2017-08-04 11:20 ` [PATCH i-g-t 09/11] tests/perf: remove unused frequency functions Lionel Landwerlin
2017-08-04 11:46 ` Chris Wilson
2017-08-04 11:20 ` [PATCH i-g-t 10/11] tests/perf: add Kabylake support Lionel Landwerlin
2017-08-10 16:24 ` Matthew Auld
2017-08-04 11:20 ` [PATCH i-g-t 11/11] tests/perf: add Geminilake support Lionel Landwerlin
2017-08-10 16:26 ` Matthew Auld
2017-08-04 11:59 ` [PATCH i-g-t 00/11] Improve robustness of the i915 perf tests Petri Latvala
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