Hi, Printing the backtrace from si_flush_gfx_cs while /etc/environment contains GALLIUM_THREAD=0 at boot should show which GL call and X call caused the flush.
Marek On Thu, Sep 16, 2021 at 10:58 PM Quan, Evan <evan.q...@amd.com> wrote: > [Public] > > > > > -----Original Message----- > > From: Michel Dänzer <mic...@daenzer.net> > > Sent: Thursday, September 16, 2021 4:12 PM > > To: Christian König <ckoenig.leichtzumer...@gmail.com>; Quan, Evan > > <evan.q...@amd.com> > > Cc: Deucher, Alexander <alexander.deuc...@amd.com>; Koenig, Christian > > <christian.koe...@amd.com>; 'amd-gfx@lists.freedesktop.org' <amd- > > g...@lists.freedesktop.org> > > Subject: Re: DRM IOCTLS come regularly(every minute) still even after > screen > > off > > > > On 2021-09-16 08:27, Christian König wrote: > > > Good morning, > > > > > > for the background I advised to contact you Michel since we couldn't > find > > an explanation. > > > > > > Alex explanation might be correct, but the CS seems to come from the X > > server and is always roughly 60 seconds after going into power save. > > > > > > Any idea what that could be? > > > > For the DRM_IOCTL_MODE_* ioctls, attaching gdb to Xorg and setting a > > breakpoint on drmIoctl should show where they're coming from. > > > > The AMDGPU_CS ioctls are probably from glamor calling OpenGL, most likely > > for X11 drawing protocol requests. Note that in this case drmIoctl/ioctl > will > > likely be called from a separate thread. Pierre / Marek should be able > to help > > you find out where the OpenGL calls are coming from. > > > > > > In general, Xorg only ever does anything in response to: > > > > * X11 protocol requests, i.e. on behalf of clients. > > * Input events, i.e. on behalf of the user. > > * Other kernel events, e.g. hotplug events. > > > Thanks for sharing these. > > > > FWIW, with only xfwm4 & xterm running on Xorg, I'm not seeing any > drmIoctl > > calls during DPMS off. So the ioctls you're seeing are most likely > triggered by > > clients. > > > Got it. Thanks! > > Evan > > > > -- > > Earthling Michel Dänzer | > > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fredh > > at.com%2F&data=04%7C01%7CEvan.Quan%40amd.com%7C296d316427 > > b4469f8eb908d978e9b46a%7C3dd8961fe4884e608e11a82d994e183d%7C0%7 > > C0%7C637673767426116632%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4w > > LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&am > > p;sdata=gBj4idZGCuaPdyaH1g1mfuDqPCcKhFMjPCbqpM8drlg%3D&res > > erved=0 > > Libre software enthusiast | Mesa and X developer >
