Messages in this thread | | | Date | Tue, 12 Nov 2013 22:11:21 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH 4/5] perf record: mmap output file - v5 |
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* David Ahern <dsahern@gmail.com> wrote:
> > Dunno.. it _should_ all work. Try it and see what it does.. Once the > > events are bigger than a page things might get 'interesting' though.
Which could be the case with call-graph recording, right?
> one option here is not allow page faults and system wide system calls. > system wide tracing needs mmap; page faults for a task can use write(). > I left that option in case something like this came up.
So maybe splice() sounds like the right long term solution after all? :-/
Thanks,
Ingo
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