[Bug 76699] [ivb/hsw] suddenly slow intel graphics

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76699

--- Comment #14 from Enrico Tagliavini <enrico.tagliavini at gmail.com> ---
Btw about the frequency (this is still with the lastest video-intel, so before
the downgrade)

When I enable vsync:

root at schroedingerscat /s/k/d/d/0 # cat i915_cur_delayinfo 
GT_PERF_STATUS: 0x000014a8
RPSTAT1: 0x00041415
Render p-state ratio: 20
Render p-state VID: 168
Render p-state limit: 255
RPNSWREQ: 1000MHz
CAGF: 1000MHz
RP CUR UP EI: 7526us
RP CUR UP: 7526us
RP PREV UP: 2512us
RP CUR DOWN EI: 4760us
RP CUR DOWN: 4760us
RP PREV DOWN: 5279us
Lowest (RPN) frequency: 350MHz
Nominal (RP1) frequency: 350MHz
Max non-overclocked (RP0) frequency: 1150MHz
Max overclocked frequency: 1150MHz

When vsync is disabled:
root at schroedingerscat /s/k/d/d/0 # cat i915_cur_delayinfo 
GT_PERF_STATUS: 0x0000078b
RPSTAT1: 0x00040708
Render p-state ratio: 7
Render p-state VID: 139
Render p-state limit: 255
RPNSWREQ: 350MHz
CAGF: 350MHz
RP CUR UP EI: 5965us
RP CUR UP: 0us
RP PREV UP: 796us
RP CUR DOWN EI: 16429us
RP CUR DOWN: 796us
RP PREV DOWN: 1610us
Lowest (RPN) frequency: 350MHz
Nominal (RP1) frequency: 350MHz
Max non-overclocked (RP0) frequency: 1150MHz
Max overclocked frequency: 1150MHz

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