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Re: very slow gdb stepping.


On Sat, 31 Mar 2012 15:05:09 +0200, PaweÅ Sikora wrote:
> during debugging a large c++ application an each gdb step (next or step-in)
> takes from ~2 to ~30 seconds which is horribly slow and uncomfortable :(
[...]
> http://carme.pld-linux.org/~pluto/gdb-cpuhog/

The name gdb-7.4.50-0.20120120 it suggests a snapshot with performance
regression later already fixed on trunk by Tom Tromey.  This performance
regression was not present in 7.4 and it will not be present in 7.5.

I have fixed this regression by a backport in 7.4.50.20120120-35.fc17,
the 20120120 snapshot date may suggest your GDB is somehow Fedora derived.
	http://pkgs.fedoraproject.org/gitweb/?p=gdb.git;a=commitdiff;h=ea0fcb4584cb04c938e32e44ad21a04c6225c5a1
->
	FYI: remove extraneous block from dw2_map_symtabs_matching_filename
	http://sourceware.org/ml/gdb-patches/2012-02/msg00409.html
	FYI: fix some performance bugs with .gdb_index
	http://sourceware.org/ml/gdb-patches/2012-02/msg00413.html


Regards,
Jan


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