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bug#17837: 24.4.50; Search very slow
From: |
Stefan Monnier |
Subject: |
bug#17837: 24.4.50; Search very slow |
Date: |
Tue, 24 Jun 2014 11:06:10 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) |
>> I counted around 45 seconds before it found the second occurrence.
Richard, was that in an "emacs -Q"?
> For me, the first one is slower: about 5 to 6 sec. The second
> occurrence takes maybe 3. Stefan, what's your timing?
Again trying it on my AMD E-350 machine, using the emacs-24 branch built
with -Og and enable-checking (on Debian testing), I get about half of
your times (about 2-3s for the first search and barely more than 1s for
the second).
Opening the file and doing M-> took 6s.
`emacs23' (Debian's build, i.e. probably with -O2 and without
enable-checking) took 4s for the M-> test.
On my fit-pc2 (Intel Atom, 1G RAM), the emacs-24 branch took 8s to do
the M->.
And on my Mele A2000 (i.e. Allwinner 1GHz A10 CPU with 512M of RAM), it
took 18s.
> Anyway, you may wish to experiment with setting jit-lock-defer-time to
> a non-nil value. E.g., try setting it to 0.25 or 0.5 sec, and see if
> that gives good results.
I think we should first try and figure out why his second search takes
45s instead of a couple seconds (I expect his Longsoon might be slower
than my Atom, but not significantly slower than my little ARM machine).
Stefan
- bug#17837: 24.4.50; Search very slow, Richard Stallman, 2014/06/23
- bug#17837: 24.4.50; Search very slow, Eli Zaretskii, 2014/06/23
- bug#17837: 24.4.50; Search very slow, Stefan Monnier, 2014/06/23
- bug#17837: 24.4.50; Search very slow, Eli Zaretskii, 2014/06/23
- bug#17837: 24.4.50; Search very slow, Richard Stallman, 2014/06/24
- bug#17837: 24.4.50; Search very slow, Eli Zaretskii, 2014/06/24
- bug#17837: 24.4.50; Search very slow, Stefan Monnier, 2014/06/24
- bug#17837: 24.4.50; Search very slow, Richard Stallman, 2014/06/25
- bug#17837: 24.4.50; Search very slow, Richard Stallman, 2014/06/25
- bug#17837: 24.4.50; Search very slow, Eli Zaretskii, 2014/06/25
- bug#17837: 24.4.50; Search very slow, Richard Stallman, 2014/06/25
- bug#17837: 24.4.50; Search very slow, Stefan Monnier, 2014/06/25
- bug#17837: 24.4.50; Search very slow, Richard Stallman, 2014/06/26