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bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00e
From: |
Clément Pit--Claudel |
Subject: |
bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014). |
Date: |
Sun, 12 Mar 2017 15:19:48 -0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 |
On 2017-03-12 13:48, Eli Zaretskii wrote:
> So you are saying that this:
>
> $ time src/emacs -Q --eval "(progn (set-fontset-font \"fontset-startup\"
> 'unicode \"Ubuntu Mono\" nil) (set-fontset-font \"fontset-startup\" 'unicode
> \"Symbola\" nil 'append) (dotimes (_ 500) (insert (make-string 20 8658)
> \"\n\") (run-with-idle-timer 0 nil #'kill-emacs)))"
>
> takes about 1.5 sec on your system, is that right? (Note that I
> replaced XITS Math with Symbola here.)
Correct. Here are extra timings:
# 24.3: before revision af1a69f4d17a482c359d98c00ef86fac835b5fac
$ time 24.3/src/emacs -Q --eval "(progn (set-fontset-font \"fontset-startup\"
'unicode \"Ubuntu Mono\" nil) (set-fontset-font \"fontset-startup\" 'unicode
\"Symbola\" nil 'append) (dotimes (_ 500) (insert (make-string 20 8658) \"\n\")
(run-with-idle-timer 0 nil #'kill-emacs)))"
real 0m0.451s
user 0m0.236s
sys 0m0.028s
# 24.5: slow
$ time 24.5/src/emacs -Q --eval "(progn (set-fontset-font \"fontset-startup\"
'unicode \"Ubuntu Mono\" nil) (set-fontset-font \"fontset-startup\" 'unicode
\"Symbola\" nil 'append) (dotimes (_ 500) (insert (make-string 20 8658) \"\n\")
(run-with-idle-timer 0 nil #'kill-emacs)))"
real 0m1.305s
user 0m0.444s
sys 0m0.192s
# 25.1: slow
$ time 25.1/src/emacs -Q --eval "(progn (set-fontset-font \"fontset-startup\"
'unicode \"Ubuntu Mono\" nil) (set-fontset-font \"fontset-startup\" 'unicode
\"Symbola\" nil 'append) (dotimes (_ 500) (insert (make-string 20 8658) \"\n\")
(run-with-idle-timer 0 nil #'kill-emacs)))"
real 0m1.495s
user 0m0.508s
sys 0m0.240s
# master with your patches: fast
$ time master/src/emacs -Q --eval "(progn (set-fontset-font \"fontset-startup\"
'unicode \"Ubuntu Mono\" nil) (set-fontset-font \"fontset-startup\" 'unicode
\"Symbola\" nil 'append) (dotimes (_ 500) (insert (make-string 20 8658) \"\n\")
(run-with-idle-timer 0 nil #'kill-emacs)))"
real 0m0.364s
user 0m0.216s
sys 0m0.020s
> If so, is the Ubuntu Mono part necessary for reproducing the slow display,
> i.e. if you remove that part, do you still get 1.5 sec?
The Ubuntu Mono part is necessary: here are timings:
# With Ubuntu Mono: slow
$ time 24.5/src/emacs -Q --eval "(progn (set-fontset-font \"fontset-startup\"
'unicode \"Ubuntu Mono\" nil) (set-fontset-font \"fontset-startup\" 'unicode
\"Symbola\" nil 'append) (dotimes (_ 500) (insert (make-string 20 8658) \"\n\")
(run-with-idle-timer 0 nil #'kill-emacs)))"
real 0m1.312s
user 0m0.440s
sys 0m0.184s
# With just Symbola added: fast (C-u C-x = shows that Symbola is used)
$ time 24.5/src/emacs -Q --eval "(progn (set-fontset-font \"fontset-startup\"
'unicode \"Symbola\" nil 'append) (dotimes (_ 500) (insert (make-string 20
8658) \"\n\") (run-with-idle-timer 0 nil #'kill-emacs)))"
real 0m0.358s
user 0m0.212s
sys 0m0.032s
It doesn't need to be specifically Ubuntu Mono, though:
# With Noto Sans: slow
$ time 24.5/src/emacs -Q --eval "(progn (set-fontset-font \"fontset-startup\"
'unicode \"Noto Sans\" nil) (set-fontset-font \"fontset-startup\" 'unicode
\"Symbola\" nil 'append) (dotimes (_ 500) (insert (make-string 20 8658) \"\n\")
(run-with-idle-timer 0 nil #'kill-emacs)))"
real 0m1.593s
user 0m0.504s
sys 0m0.236s
# With Fira Sans: slow
$ time 24.5/src/emacs -Q --eval "(progn (set-fontset-font \"fontset-startup\"
'unicode \"Fira Sans\" nil) (set-fontset-font \"fontset-startup\" 'unicode
\"Symbola\" nil 'append) (dotimes (_ 500) (insert (make-string 20 8658) \"\n\")
(run-with-idle-timer 0 nil #'kill-emacs)))"
real 0m1.511s
user 0m0.520s
sys 0m0.248s
Hope this helps,
Clément.
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- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Clément Pit--Claudel, 2017/03/12
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Eli Zaretskii, 2017/03/12
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Clément Pit--Claudel, 2017/03/12
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Eli Zaretskii, 2017/03/12
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014).,
Clément Pit--Claudel <=
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Eli Zaretskii, 2017/03/13
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Clément Pit--Claudel, 2017/03/13
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Eli Zaretskii, 2017/03/13
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Clément Pit--Claudel, 2017/03/13
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Eli Zaretskii, 2017/03/13
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Clément Pit--Claudel, 2017/03/14
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Eli Zaretskii, 2017/03/15
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Eli Zaretskii, 2017/03/14
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Clément Pit--Claudel, 2017/03/14
- bug#21028: Performance regression in revision af1a69f4d17a482c359d98c00ef86fac835b5fac (Apr 2014)., Eli Zaretskii, 2017/03/15