From: Tom Tromey <tromey@redhat.com>
To: Daniel Jacobowitz <drow@false.org>
Cc: archer@sourceware.org
Subject: Re: Initial psymtab replacement results
Date: Thu, 24 Dec 2009 17:07:00 -0000 [thread overview]
Message-ID: <m3zl58z4f6.fsf@fleche.redhat.com> (raw)
In-Reply-To: <m3aax95ytl.fsf@fleche.redhat.com> (Tom Tromey's message of "Wed, 23 Dec 2009 11:29:10 -0700")
>>>>> "Tom" == Tom Tromey <tromey@redhat.com> writes:
Tom> I haven't written the reader side of this yet. I probably won't finish
Tom> that until sometime in January.
Actually, I finished it yesterday and got preliminary results:
With index:
opsy. /usr/bin/time ./gdb/gdb -batch ./gdb/gdb
0.21user 0.03system 0:00.30elapsed 82%CPU (0avgtext+0avgdata 0maxresident)k
8inputs+32outputs (0major+3760minor)pagefaults 0swaps
Without:
opsy. /usr/bin/time ./gdb/gdb -batch ./gdb/gdb
3.16user 0.09system 0:03.82elapsed 85%CPU (0avgtext+0avgdata 0maxresident)k
8inputs+32outputs (0major+10562minor)pagefaults 0swaps
This is with a warm cache, I didn't find the time to do it the other way
yet.
I just picked a size for all the offsets (32 bits) and an endianness
(little) for the index. I figure big-endian hosts can byteswap when
using the index, that might not be too bad in practice.
Tom
next prev parent reply other threads:[~2009-12-24 17:07 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-10 21:54 Tom Tromey
2009-12-11 23:10 ` Tom Tromey
2009-12-11 23:59 ` Daniel Jacobowitz
2009-12-14 22:40 ` Tom Tromey
2009-12-14 23:09 ` Daniel Jacobowitz
2009-12-15 23:39 ` Tom Tromey
2009-12-16 3:01 ` Roland McGrath
2009-12-16 18:20 ` Tom Tromey
2009-12-16 18:57 ` Roland McGrath
2009-12-16 19:46 ` Tom Tromey
2009-12-16 19:52 ` Roland McGrath
2009-12-16 18:11 ` Daniel Jacobowitz
2009-12-16 19:31 ` Tom Tromey
2009-12-23 18:29 ` Tom Tromey
2009-12-23 18:35 ` Daniel Jacobowitz
2009-12-24 17:07 ` Tom Tromey [this message]
2010-01-06 23:05 ` Tom Tromey
2009-12-17 16:39 ` Paul Pluzhnikov
2009-12-17 16:53 ` Daniel Jacobowitz
2009-12-17 17:20 ` Paul Pluzhnikov
2009-12-17 18:16 ` Daniel Jacobowitz
2009-12-18 23:58 ` Tom Tromey
2009-12-21 13:54 ` Daniel Jacobowitz
2009-12-21 21:29 ` Tom Tromey
2009-12-15 1:04 ` Roland McGrath
2009-12-15 18:36 ` Tom Tromey
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