Re: [Xen-devel] trace default?

[Mark Williamson <mark.williamson@xxxxxxxxxxxx>]

> Yes, but they are likely to stick with the xen defaults unless they have
> a reason for changing them. In the case of tracing,  their reaction is
> likely to be that "tracing" sounds like some debugging feature, will
> probably be bad for performance, so let's leave it turned off. So could
> you state what performance impact you think tracing will actually have
> on the system?

Trace buffers can be disabled on the commandline to avoid the memory overhead 
and the cost of calling the "trace" function itself via the TRACE_xD macros 
should not be measurable.

Cheers,
Mark

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