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From: Andrew Cagney <ac131313@redhat.com>
To: davidm@hpl.hp.com
Cc: "J. Johnston" <jjohnstn@redhat.com>,
	gdb-patches@sources.redhat.com,
	Kevin Buettner <kevinb@redhat.com>
Subject: Re: RFA: ia64 portion of libunwind patch
Date: Fri, 07 Nov 2003 23:38:00 -0000	[thread overview]
Message-ID: <3FAC2D03.8070607@redhat.com> (raw)
In-Reply-To: <16300.9949.513264.716812@napali.hpl.hp.com>

> On Fri, 07 Nov 2003 18:01:40 -0500, Andrew Cagney <ac131313@redhat.com> said:
> 
> 
>   Andrew> Is fetching the table elements via a function, rather than a
>   Andrew> direct access, really that significant an overhead?
> 
> Is allocating a scratch buffer in gdb really such a big issue?
> It's very late for proposing libunwind API changes.

Draging that entire buffer (128k in the case of a program like GDB) 
across the remote link is going to raise a few eyebrows so a careful 
examination is justified.  If that search is so critical can the 
algorithm be made more efficient?  If it isn't then, per my suggestion, 
have the code use the memory method as a fallback.

Andrew



  reply	other threads:[~2003-11-07 23:38 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-10-31 19:25 J. Johnston
2003-10-31 20:46 ` Andrew Cagney
2003-10-31 22:55   ` David Mosberger
2003-11-07 21:47     ` Andrew Cagney
2003-11-07 22:43       ` David Mosberger
2003-11-07 23:01         ` Andrew Cagney
2003-11-07 23:12           ` David Mosberger
2003-11-07 23:38             ` Andrew Cagney [this message]
2003-11-07 23:55               ` David Mosberger
2003-11-08  0:07                 ` Andrew Cagney
2003-11-08  0:13                   ` Kevin Buettner
2003-11-08  0:27                     ` Andrew Cagney
2003-11-08  7:21                       ` David Mosberger
2003-11-09  0:13                         ` Andrew Cagney
2003-11-10 22:10                           ` David Mosberger
2003-11-10 22:43                             ` Andrew Cagney
2003-11-10 23:01                               ` David Mosberger
2003-11-26  0:11                               ` David Mosberger
2003-12-04  2:15                                 ` David Mosberger
2003-12-04  3:15                                   ` Kevin Buettner
2003-12-04 23:57                                   ` J. Johnston
2003-12-05  0:39                                     ` David Mosberger
2003-12-10 20:58                                       ` J. Johnston
2003-12-10 22:15                                         ` David Mosberger
2003-12-12 22:25                                         ` Kevin Buettner
     [not found]                                 ` <davidm@napali.hpl.hp.com>
2003-12-13  4:01                                   ` Kevin Buettner
2003-12-31 20:19                                     ` make inferior calls work on ia64 even when syscall is pending David Mosberger
2003-12-31 23:37                                       ` Mark Kettenis
2004-01-01  2:43                                         ` David Mosberger
2004-02-13  1:14                                         ` David Mosberger
2004-02-13 15:00                                           ` Mark Kettenis
2004-02-13 15:09                                             ` Andrew Cagney
2004-02-13 15:12                                             ` Andrew Cagney
2004-02-13 22:07                                               ` David Mosberger
2004-02-17 16:21                                                 ` Andrew Cagney
2004-02-23 19:58                                                   ` Kevin Buettner
2004-02-23 21:15                                                 ` Kevin Buettner
2003-11-09  1:34             ` RFA: ia64 portion of libunwind patch Marcel Moolenaar
2003-11-10 21:54               ` David Mosberger
2003-11-10 23:18                 ` Marcel Moolenaar
2003-10-31 21:36 ` Marcel Moolenaar
2003-10-31 23:00   ` David Mosberger
2003-10-31 23:42     ` Andrew Cagney
2003-10-31 23:59       ` David Mosberger
  -- strict thread matches above, loose matches on Subject: below --
2003-10-24  0:11 J. Johnston
2003-10-24 17:57 ` Kevin Buettner
2003-10-24 18:20   ` J. Johnston
2003-10-24 18:56     ` Kevin Buettner
2003-10-24 21:53       ` Marcel Moolenaar
2003-10-24 23:58         ` Kevin Buettner
2003-10-28 23:53       ` J. Johnston
2003-10-29  1:28         ` Daniel Jacobowitz
2003-10-29  4:48           ` Kevin Buettner
2003-10-29 18:43             ` J. Johnston
2003-10-29 22:48           ` Andrew Cagney
2003-11-04 19:09             ` J. Johnston
2003-11-04 20:48               ` Kevin Buettner
2003-11-14  0:26               ` J. Johnston
2003-11-14  1:17                 ` Kevin Buettner
2003-11-14 20:49                   ` J. Johnston
2003-10-29 23:28         ` Andrew Cagney
2003-11-02 20:39         ` Elena Zannoni
2003-10-29 15:18 ` Andrew Cagney

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