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Re: Slow handling of C++ symbol names

From: Andrew Cagney <cagney at gnu dot org>
To: Michael Elizabeth Chastain <mec dot gnu at mindspring dot com>
Cc: ac131313 at redhat dot com, wcohen at redhat dot com, drow at mvista dot com,gdb at sources dot redhat dot com
Date: Wed, 03 Dec 2003 13:52:26 -0500
Subject: Re: Slow handling of C++ symbol names
References: <20031202220907.683774B362@berman.michael-chastain.com>

Andrew Cagney writes:

I guess we get to restart the analysis :-(

Sounds like a job for GDB QA Guy! :)

I downloaded Will's executables from:
  http://people.redhat.com/wcohen/gdb_tuning/monostrip
  http://people.redhat.com/wcohen/gdb_tuning/monotone
Here are some memory usage and time numbers.
  gdb   memory  utime  stime  elapsed
  5.3   263M    84.79  26.52  185.92
  6.0   263M    83.17  26.45  181.04
 HEAD    43M     2.78   0.27    3.23
gdb HEAD is from '2003-11-30 06:08:24 UTC'.

Michael, not to overload you but would it also be possible to do the numbers on a just-before-new-mangler-mainline? At present there's a gap in our knowledge - we don't know the effect that just the demangler change had. Also lets us compare:

6.0 vs PRE vs POST

Andrew

References:
- Re: Slow handling of C++ symbol names
  - From: Michael Elizabeth Chastain

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