https://sourceware.org/bugzilla/show_bug.cgi?id=30221
Aaron Merey <amerey at redhat dot com> changed:
What |Removed |Added
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CC| |amerey at redhat dot com
--- Comment #9 from Aaron Merey <amerey at redhat dot com> ---
(In reply to Vicki Pfau from comment #7)
> I did, and in comment 2 I already explained why I think it's a bad idea.(In
> reply to Frank Ch. Eigler from comment #6)
> > (In reply to Vicki Pfau from comment #2)
> > > 404 and the like *may* be transient, but the fact of the matter is that
> > > *most* of the time it won't be And it's a cache, not a definitive answer
> > > saying this will never exist. Having a 404 cache for 10x the amount of
> > > time
> > > as a Ctrl-C
> >
> > I don't understand - a ctrl-C should not result in a cached artifact at all.
> > If that's happening, we should fix that.
>
> Okay, that is kinda weird then. I'm seeing it in gdb--perhaps it's a gdb
> issue then.
The issue was in libdebuginfod itself. I merged a fix for this:
https://sourceware.org/pipermail/elfutils-devel/2023q1/006050.html
> > > I'm already dealing with gdb taking well
> > > over 30 seconds to start running a program with a bunch of shared object
> > > dependencies that aren't in debuginfod...
> >
> > Uncached misses from debuginfod tend to take on the order of milliseconds,
> > much less than seconds. Do you have a trace of what's happening?
> > (DEBUGINFOD_VERBOSE=1 or something like that?)
>
> The issue appears to be the debuginfod server taking a not-insignificant
> amount of time per request (500ms - 2s I'd estimate) to report the absence
> of an associated artifact. Perhaps this is just an issue with how the server
> is configured. I'm using the elfutils server, but I've seen the same issue
> on Arch's server (the distro I'm using). It's worth noting too that some
> users will undoubtedly have higher latency. A way to asynchronously initiate
> requests so you can have multiple going at once would be great to try and
> alleviate this somewhat, but it doesn't look like there's a way to do this
> yet.
There has been some discussion about gdb downloading from debuginfod in
background worker threads. I would like to get this feature added eventually.
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