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List: gdb
Subject: Re: Bad performance in updating JIT debug symbols
From: Fredrik Tolf <fredrik () dolda2000 ! com>
Date: 2016-09-20 2:19:54
Message-ID: alpine.DEB.2.11.1609200414180.2866 () shack ! dolda2000 ! com
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On Mon, 19 Sep 2016, Pedro Alves wrote:
> I've now rebased and force-pushed part of what I had to the
> users/palves/jit-speedup branch. It's regression-free for me
> on x86_64 Fedora 23. I'm also attaching qsort patch below for
> reference.
I tested the branch, and can verify that it seems to be working really
well for me. I no longer any noticable slowdown at compilations
whatsoever, so that's really great for me. I'll probably be running this
until the code gets its way into release, so thanks a lot!
I haven't tested it a whole lot yet, but I too haven't noticed any
regressions thus far.
> If you don't have any breakpoint set, then with that branch,
> JIT debugging is snappy. The problem is that the next bottleneck
> triggers as soon as you have some breakpoint set.
For the record, I'm not noticing this. I tried setting a breakpoint, and
there's still no problem whatsoever when new code is JITted.
--
Fredrik Tolf
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