>
> From: "[email protected]" <[email protected]>
>
> Default indication period (13-17ms) from the driver to OS
> increases total CPU consumption during presentation operations.
> Reducing indication frequency to 200 ms reduces cost of this
> feature. Till now we do not see any negative impact of this.
>
> Signed-off-by: Yuri Benditovich <[email protected]>
Till 7/12 I ack them.
I have additional consideration/comments for the next ones.
Can I merge till 7/12 or do you want to wait for all of them?
Frediano
> ---
> qxldod/QxlDod.cpp | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/qxldod/QxlDod.cpp b/qxldod/QxlDod.cpp
> index 7341389..aa70f39 100755
> --- a/qxldod/QxlDod.cpp
> +++ b/qxldod/QxlDod.cpp
> @@ -19,6 +19,7 @@
> (QXL_INTERRUPT_CURSOR) | \
> (QXL_INTERRUPT_IO_CMD))
>
> +#define VSYNC_PERIOD 200 // ms, use 0 for auto
> #define VSYNC_RATE 75
>
> BOOLEAN g_bSupportVSync;
> @@ -5006,8 +5007,9 @@ VOID QxlDod::EnableVsync(BOOLEAN bEnable)
> else
> {
> LARGE_INTEGER li;
> - LONG period = 1000 / VSYNC_RATE;
> - DbgPrint(TRACE_LEVEL_WARNING, ("Enabled VSync(fired %d)\n",
> m_VsyncFiredCounter));
> + LONG period = VSYNC_PERIOD;
> + if (!period) period = 1000 / VSYNC_RATE;
> + DbgPrint(TRACE_LEVEL_WARNING, ("Enabled VSync %d ms(fired
> %d)\n", period, m_VsyncFiredCounter));
> li.QuadPart = -10000000 / VSYNC_RATE;
> KeSetTimerEx(&m_VsyncTimer, li, period, &m_VsyncTimerDpc);
> }
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