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McEs, A Hacker Life
Friday, February 10, 2006
 VTE is Fast now

VTE patches are in CVS. The throttling one, the faster private, and the efficient sequence handler table that I just cooked. The throttling reduces the time for a warm "ls -R /usr/lib" from above 5s to below 2s with no sensible difference on the screen.

Comments:
<3
 
I've tested your patches. ls -R /usr/lib took 7-10 seconds before the patches were applied (not counting cold runs). Now, with patches applied, it takes less than 2 seconds:

time ls -R /usr/lib
[snip]
real 0m1.507s

Great!
 
Thank you!
 
Sounds great, thanks for your work on this!
 
Here are some interesting numbers from my testing.

xterm:
$ time ls -R /usr/lib
real 0m6.574s
user 0m0.264s
sys 0m0.656s

gnome-terminal:
$ time ls -R /usr/lib
real 0m3.363s
user 0m0.220s
sys 0m0.704s

Great work!
 
Bravissimo!

Christian Sasso (GNOME fan)
 
Maybe you'd be interested in fixing some of the
display bugs in vte.
Some are revealed when running vttest:
http://dickey.his.com/vttest/vttest.html
AFAIK one was the fact that vte does not restore the cursor attributes when saving/restoring the cursor position. Another one is not coping with empty strings in the color specification (i.e something like: ^[4;;m)

A much needed feature for vte is support for 256 colors. Look how good emacs looks on
a 256 colors rxvt (same for xterm)
http://lorentey.hu/images/emacs/multi-tty.dann.jpg
 
Thanks for all the comments. For bugs, please report them on bugzilla.gnome.org. As for 256 colors, it's quite possible in vte, needs somebody that knows the spec to implement it. May be you as well!
 
Looks like the bugs are already present in bugzilla:
vttest: #4993
256 colors support: #168251

Looking at the vte bugs in bugzilla:
http://bugzilla.gnome.org/buglist.cgi?query_format=advanced&short_desc_type=allwordssubstr&short_desc=&product=vte&component=VteTerminal&version=0.10.x&version=0.11.x&version=unspecified&long_desc_type=substring&long_desc=&status_whiteboard_type=allwordssubstr&status_whiteboard=&keywords_type=allwords&keywords=&bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_status=NEEDINFO&emailassigned_to1=1&emailtype1=substring&email1=&emailassigned_to2=1&emailreporter2=1&emailqa_contact2=1&emailcc2=1&emailtype2=substring&email2=&bugidtype=include&bug_id=&chfieldfrom=&chfieldto=Now&chfieldvalue=&field0-0-0=noop&type0-0-0=noop&value0-0-0=&order=bugs.bug_status,bugs.bug_id&query_based_on=
it seems taht there's a huge number of unconfirmed bugs, so it does not look like anybody is paying any attention to the bug reports. :-(

A few bugs have patches included that have not been applied...

You might find bug #96879 useful for your performance work.

As for the 256 colors, I don't currently have the time to work on this, but I can provide the RGB triplets for the 256 colors (or an algorithm to compute them) in case anybody is interested.
 
Looks like the bugs are already present in bugzilla:
vttest: #4993
256 colors support: #168251

Looking at the vte bugs in bugzilla:
http://bugzilla.gnome.org/buglist.cgi?query_format=advanced&short_desc_type=allwordssubstr&short_desc=&product=vte&component=VteTerminal&version=0.10.x&version=0.11.x&version=unspecified&long_desc_type=substring&long_desc=&status_whiteboard_type=allwordssubstr&status_whiteboard=&keywords_type=allwords&keywords=&bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_status=NEEDINFO&emailassigned_to1=1&emailtype1=substring&email1=&emailassigned_to2=1&emailreporter2=1&emailqa_contact2=1&emailcc2=1&emailtype2=substring&email2=&bugidtype=include&bug_id=&chfieldfrom=&chfieldto=Now&chfieldvalue=&field0-0-0=noop&type0-0-0=noop&value0-0-0=&order=bugs.bug_status,bugs.bug_id&query_based_on=
it seems taht there's a huge number of unconfirmed bugs, so it does not look like anybody is paying any attention to the bug reports. :-(

A few bugs have patches included that have not been applied...

You might find bug #96879 useful for your performance work.

As for the 256 colors, I don't currently have the time to work on this, but I can provide the RGB triplets for the 256 colors (or an algorithm to compute them) in case anybody is interested.
 
I implemented 256 color support for vte.
There are some (small) decisions left to make for someone that knows the vte code...
Interested?
 
Definitely!!!
Please file a bug at http://bugs.gnome.org/ and attach your patch. We will talk about the rest there.

Thanks
 
Patch attached to bug #168251
 
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