On Tue, 2012-06-26 at 12:46 +0200, Martin Steigerwald wrote:
[...]
> The current Debian kernels all lack latencytop support:
[...]
> Please consider activating this support again.
What do you mean, 'again'?
> Otherwise someone who wants to use latencytop needs to recompile the
> kernel which greatly reduces the usefulness of the latencytop package.
This costs 1680 or 3360 bytes of non-paged memory for every thread in
the system (depending on word size), even if the feature is never
actually used. On my laptop, for example, this would be about a
megabyte. I really don't think this is a good idea.
It is probably possible to change the way the latency records are kept
so that this memory is allocated only when needed, but I'm unlikely to
find the time to do that.
Ben.
--
Ben Hutchings
Lowery's Law:
If it jams, force it. If it breaks, it needed replacing anyway.
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