https://bugs.freedesktop.org/show_bug.cgi?id=105712
Bug ID: 105712 Summary: intel-gpu-overlay is showing insane power consumption amounts Product: DRI Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: IGT Assignee: dri-devel@lists.freedesktop.org Reporter: leozinho29_eu@hotmail.com
Created attachment 138312 --> https://bugs.freedesktop.org/attachment.cgi?id=138312&action=edit Screenshot showing intel-gpu-overlay in Xnest
The program intel-gpu-overlay from intel-gpu-tools is showing very high numbers of power consumption. It is showing values as high as 60 GW of power (60000000000000 mW). Comparing the values to versions that were OK previously (intel-gpu-tools 1.18 shows proper values), it appears that there are many additional numbers that should be in the decimal places, so that 60000000000000 mW would be 6000,0000000000 mW, or 6 W (which, usually, is the maximum I've seen so far).
This is happening both with intel-gpu-tools 1.22 and with the latest git (c2ee9077).
-- chipset: Intel Core i3-6100U -- system architecture: 64-bit -- xf86-video-intel: 2:2.99.917+git20171229-1 -- xserver: 2:1.19.6-1ubuntu3 -- mesa: 18.1.0-devel (git-903e9952fb) -- libdrm: 2.4.91-2 -- kernel: 4.16.0-rc6 -- Linux distribution: Xubuntu 18.04 (Development branch) -- Machine or mobo model: Lenovo Ideapad 310-14ISK 80UG -- Display connector: eDP and VGA
https://bugs.freedesktop.org/show_bug.cgi?id=105712
--- Comment #1 from Chris Wilson chris@chris-wilson.co.uk --- Please try drm-tip as the interface intel-gpu-overlay uses has finally been upstreamed, hopefully it's just that.
https://bugs.freedesktop.org/show_bug.cgi?id=105712
--- Comment #2 from leozinho29_eu@hotmail.com --- I suppose drm-tip is this: https://cgit.freedesktop.org/drm-tip
I have tried to use that kernel but intel-gpu-overlay is still showing the super high values. Both older versions of intel-gpu-overlay and turbostat show sane values.
https://bugs.freedesktop.org/show_bug.cgi?id=105712
--- Comment #3 from Chris Wilson chris@chris-wilson.co.uk --- Ok, try changing intel-gpu-tools:
diff --git a/overlay/power.c b/overlay/power.c index 9ac90fde..e02edec8 100644 --- a/overlay/power.c +++ b/overlay/power.c @@ -116,7 +116,8 @@ int power_init(struct power *power)
memset(power, 0, sizeof(*power));
- power->fd = igt_perf_open(rapl_type_id(), rapl_gpu_power()); + power->fd = -1; + //power->fd = igt_perf_open(rapl_type_id(), rapl_gpu_power()); if (power->fd >= 0) { power->rapl_scale = rapl_gpu_power_scale();
https://bugs.freedesktop.org/show_bug.cgi?id=105712
--- Comment #4 from leozinho29_eu@hotmail.com --- With this change it is showing the values as expected, 350 mW instead of 3500000000000 mW.
https://bugs.freedesktop.org/show_bug.cgi?id=105712
--- Comment #5 from Chris Wilson chris@chris-wilson.co.uk --- Add a couple of printfs,
diff --git a/overlay/power.c b/overlay/power.c index 9ac90fde..e6ac728a 100644 --- a/overlay/power.c +++ b/overlay/power.c @@ -117,8 +117,12 @@ int power_init(struct power *power) memset(power, 0, sizeof(*power));
power->fd = igt_perf_open(rapl_type_id(), rapl_gpu_power()); + fprintf(stderr, "rapl_type_id()=%"PRIx64", rapl_gpu_power()=%"PRIx64"\n", + rapl_type_id(), rapl_gpu_power()); if (power->fd >= 0) { power->rapl_scale = rapl_gpu_power_scale(); + fprintf(stderr, "rapl_gpu_power_scale()=%f\n", + rapl_gpu_power_scale());
if (power->rapl_scale != NAN) { power->rapl_scale *= 1e3; /* from nano to micro */
and run with -f (so that it doesn't detach and we can see the output).
https://bugs.freedesktop.org/show_bug.cgi?id=105712
--- Comment #6 from leozinho29_eu@hotmail.com --- The lines
fprintf(stderr, "rapl_type_id()=%"PRIx64", rapl_gpu_power()=%"PRIx64"\n", rapl_type_id(), rapl_gpu_power());
made the overlay fail to build. I have changed that to (using lx is not perfect, but PRIx64 made it fail to build):
fprintf(stderr, "rapl_type_id()=%lx\n",rapl_type_id()); fprintf(stderr, "rapl_gpu_power()=%lx\n",rapl_gpu_power());
which should result in the intended output. It was:
rapl_type_id()=d rapl_gpu_power()=4 rapl_gpu_power_scale()=2,000000
https://bugs.freedesktop.org/show_bug.cgi?id=105712
--- Comment #7 from Chris Wilson chris@chris-wilson.co.uk --- And for completeness: cat /sys/devices/power/events/energy-gpu.scale
https://bugs.freedesktop.org/show_bug.cgi?id=105712
--- Comment #8 from leozinho29_eu@hotmail.com --- $ sudo cat /sys/devices/power/events/energy-gpu.scale 2.3283064365386962890625e-10
https://bugs.freedesktop.org/show_bug.cgi?id=105712
--- Comment #9 from Chris Wilson chris@chris-wilson.co.uk --- Created attachment 138378 --> https://bugs.freedesktop.org/attachment.cgi?id=138378&action=edit Use setlocale("C") around strtod
Please try the attached patch.
https://bugs.freedesktop.org/show_bug.cgi?id=105712
--- Comment #10 from leozinho29_eu@hotmail.com --- With this patch, the power consumption is shown correctly.
https://bugs.freedesktop.org/show_bug.cgi?id=105712
Chris Wilson chris@chris-wilson.co.uk changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED
--- Comment #11 from Chris Wilson chris@chris-wilson.co.uk --- Thank you for the bug report and the invaluable testing.
commit 3fa0b027304ec28cd24b314349d3731b55dfcc0a (HEAD, upstream/master) Author: Chris Wilson chris@chris-wilson.co.uk Date: Tue Mar 27 15:20:51 2018 +0100
overlay: Call setlocale around strtod
strtod() is locale-dependent. The decimal conversion depends on the radix character ('.' for some of us like myself) varies by locale. As the kernel reports its values using the "C" locale, we need to switch to that when parsing; and switch back before reporting to the user.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105712 Signed-off-by: Chris Wilson chris@chris-wilson.co.uk Cc: Tvrtko Ursulin tvrtko.ursulin@intel.com Reviewed-by: Tvrtko Ursulin tvrtko.ursulin@intel.com
https://bugs.freedesktop.org/show_bug.cgi?id=105712
Lakshmi lakshminarayana.vudum@intel.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |CLOSED
--- Comment #12 from Lakshmi lakshminarayana.vudum@intel.com --- Closing this bug, as it was resolved/fixed.
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