Re: [RFC] perf record: Disable debuginfod by default

[Jiri Olsa]

On Fri, Dec 10, 2021 at 11:50:10AM -0500, Frank Ch. Eigler wrote:
> Hi -
> 
> On Fri, Dec 10, 2021 at 01:23:32PM +0100, Jiri Olsa wrote:
> > [...]
> > at the end of the perf record we populate buildid cache
> > with profiled binaries for the current perf.data
> > 
> > **IF** there's DEBUGINFOD_URLS defined, that code will
> > also ask debuginfod for binaries it could not find on
> > the system
> 
> Consider doing this only at the end of the run, and in the background,
> just as a prefetch for the perf report step?  The main downside there
> could be if one runs many perf record jobs in close proximity,
> overlapping larger prefetch download tasks.  That might waste some
> network traffic.

right, IMO it's too much for default behaviour but I think could
do this under new (config) option, if there's a need for that

thanks,
jirka