On Tue, 2012-07-31 at 09:28 +0100, Chris Wilson wrote: > On Tue, 31 Jul 2012 09:06:42 +0100, James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote: > > Actually, bad news: it looks like the problem is drm: > > > > on 3.5 killing X causes idle power to go 14W -> 5.9W > > on 3.4.6 killing X causes idle power to go 6.8W -> 5.7W > > The files that will be the most interesting to compare at first are: > > /sys/kernel/debug/dri/0/i915_drpc_info > /sys/kernel/debug/dri/0/i915_cur_delayinfo > /sys/kernel/debug/dri/0/i915_fbc_status This is for the good kernel 3.4.6 jejb@dabdike> cat /sys/kernel/debug/dri/0/i915_drpc_info RC information accurate: yes Video Turbo Mode: yes HW control enabled: yes SW control enabled: no RC1e Enabled: no RC6 Enabled: yes Deep RC6 Enabled: no Deepest RC6 Enabled: no Current RC state: RC6 Core Power Down: no jejb@dabdike> cat /sys/kernel/debug/dri/0/i915_cur_delayinfo GT_PERF_STATUS: 0x00000d29 RPSTAT1: 0x00040d00 Render p-state ratio: 13 Render p-state VID: 41 Render p-state limit: 255 CAGF: 650MHz RP CUR UP EI: 20459us RP CUR UP: 172us RP PREV UP: 0us RP CUR DOWN EI: 0us RP CUR DOWN: 0us RP PREV DOWN: 0us Lowest (RPN) frequency: 650MHz Nominal (RP1) frequency: 650MHz Max non-overclocked (RP0) frequency: 1100MHz jejb@dabdike> cat /sys/kernel/debug/dri/0/i915_fbc_status FBC disabled: disabled per module param (default off) And the bad kernel 3.5 jejb@dabdike> cat /sys/kernel/debug/dri/0/i915_drpc_info RC information accurate: yes Video Turbo Mode: yes HW control enabled: yes SW control enabled: no RC1e Enabled: no RC6 Enabled: yes Deep RC6 Enabled: no Deepest RC6 Enabled: no Current RC state: RC6 Core Power Down: no RC6 "Locked to RPn" residency since boot: 0 RC6 residency since boot: 97671911 RC6+ residency since boot: 0 RC6++ residency since boot: 0 jejb@dabdike> cat /sys/kernel/debug/dri/0/i915_cur_delayinfo GT_PERF_STATUS: 0x00000d29 RPSTAT1: 0x00048d00 Render p-state ratio: 13 Render p-state VID: 41 Render p-state limit: 255 CAGF: 650MHz RP CUR UP EI: 63719us RP CUR UP: 26us RP PREV UP: 0us RP CUR DOWN EI: 0us RP CUR DOWN: 0us RP PREV DOWN: 0us Lowest (RPN) frequency: 650MHz Nominal (RP1) frequency: 650MHz Max non-overclocked (RP0) frequency: 1100MHz jejb@dabdike> cat /sys/kernel/debug/dri/0/i915_fbc_status FBC disabled: disabled per module param (default off) > However if it was simple regression in drm, then the bisect would have > continued to work despite the merge point jumping between 3.4 and 3.5, > right? No ... the bisect stepped back into 3.3 which mean I lost the ability to detect the regression. I think it might be fixable given I have a more precise identifier for the tree because it looks like none of the roots of the drm tree is before 3.4-rc. James _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
