* Jiri Olsa <[email protected]> wrote:
> On Sun, Apr 27, 2014 at 11:36:35PM +0900, Namhyung Kim wrote:
> > 2014-04-17 (목), 19:39 +0200, Jiri Olsa:
> > > Keeping the data file description open for the whole life
> > > of the dso object.
> >
> > I suspect there might be an issue for reporting very large data file
> > with this approach - like open file limit?
>
> I've got as high as ~200 openned file descriptors for
> ~2GB data of system wide monitoring
Note that 200 open file descriptors in themselves are not a
scalability problem on Linux, as long as perf doesn't walk them
linearly anywhere.
I think we are reasonably fast even with a million open files in a
singe process, or so.
Thanks,
Ingo
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