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Re: profiling emacs-23.1 vs emacs-22.3
From: |
Kenichi Handa |
Subject: |
Re: profiling emacs-23.1 vs emacs-22.3 |
Date: |
Wed, 26 Aug 2009 17:06:06 +0900 |
In article <address@hidden>, Dan Nicolaescu <address@hidden> writes:
> Some CJK charsets are necessary to create the default
> fontset. I think it's possible to avoid loading unnecessary
> charsets for creating the default fontset. I'll work on it.
> Can the data in the default fontset be in the dumped image in pure
> memory? To not have to create it every time on start up and GC it
> should be a win.
Is it possible to put the whole char-table in pure space,
then modify some part at running time?
> So, (3) is still 13% slower than (1), but I think it's a
> necessary cost for having the full Unicode support. And
> usually the slowness of GC doesn't direclty affect the total
> execution time.
> It does, see the profiling data that I sent. The problem with GC is
> that it will flush all the caches if there's too much memory to walk
> over. And the slowdown in GC speed is directly related to the big
> increase in the number of GCable objects.
If most of the execution is spent by GC, shouldn't such a
task run with bigger gc-cons-threshold?
But, I tried your test case of indent-region with different
gc-cons-threshold (gct), and the result shows that GC is not
the main culprit of the slowness.
emacs-22 (gct=400000): 16 to 17 sec
emacs-22 (gct=10000000):16 to 17 sec
trunk (gct=400000): 20 to 21 sec
trunk (gct=10000000): 19 to 20 sec
---
Kenichi Handa
address@hidden
- Re: profiling emacs-23.1 vs emacs-22.3, (continued)
- Re: profiling emacs-23.1 vs emacs-22.3, Dan Nicolaescu, 2009/08/05
- Re: profiling emacs-23.1 vs emacs-22.3, Kenichi Handa, 2009/08/24
- Re: profiling emacs-23.1 vs emacs-22.3, Dan Nicolaescu, 2009/08/24
- Re: profiling emacs-23.1 vs emacs-22.3, Kenichi Handa, 2009/08/24
- Re: profiling emacs-23.1 vs emacs-22.3, Dan Nicolaescu, 2009/08/24
- Re: profiling emacs-23.1 vs emacs-22.3, Kenichi Handa, 2009/08/25
- Re: profiling emacs-23.1 vs emacs-22.3, Dan Nicolaescu, 2009/08/25
- Re: profiling emacs-23.1 vs emacs-22.3, Kenichi Handa, 2009/08/26
- Re: profiling emacs-23.1 vs emacs-22.3, Dan Nicolaescu, 2009/08/26
- Re: profiling emacs-23.1 vs emacs-22.3,
Kenichi Handa <=
- Re: profiling emacs-23.1 vs emacs-22.3, Andreas Schwab, 2009/08/26
- Re: profiling emacs-23.1 vs emacs-22.3, Kenichi Handa, 2009/08/26
- Re: profiling emacs-23.1 vs emacs-22.3, Kenichi Handa, 2009/08/27
- Re: profiling emacs-23.1 vs emacs-22.3, Alan Mackenzie, 2009/08/24