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From: "simark at simark dot ca" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/29702] Huge slowdown just after loading thread DWARF data
 when hitting breakpoints (gdb in MCUXpresso / Eclipse)
Date: Fri, 21 Oct 2022 17:12:06 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29702

Simon Marchi <simark at simark dot ca> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |simark at simark dot ca

--- Comment #2 from Simon Marchi <simark at simark dot ca> ---
To make the problem easier to investigate, you can try to manually trigger =
the
expansion of symtabs using the "maintenance expand-symtabs" command.  You d=
on't
need to be connected to your target to do this.  For instance (running gdb =
on
gdb):

(top-gdb) with debug timestamp 1 -- with debug dwarf-read 1 -- maintenance
expand-symtabs finish
1110674.433796 [dwarf-read] process_queue: Expanding one or more symtabs of
objfile /home/simark/build/binutils-gdb/gdb/gdb ...
1110674.433821 [dwarf-read] process_queue: Expanding symtab of CU at offset
0x47aa3b3
1110674.489215 [dwarf-read] process_queue: Done expanding CU at offset
0x47aa3b3
1110674.489236 [dwarf-read] process_queue: Done expanding symtabs of
/home/simark/build/binutils-gdb/gdb/gdb.

If you can reproduce the delay this way, it will be much easier to investig=
ate.

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