XTerm scrolling in xorg-server @1.20.4_0

Christopher Jones jonesc at hep.phy.cam.ac.uk
Wed Apr 3 06:47:56 UTC 2019


I see no problems with remote terms, forwarding them through an ssh tunnel works fine and I see no evidence of any slowdowns or schilling issues. What system version, xterm version etc., is the remote machine running ?

As for local Tcl/Tk, I have no idea, I do not use any of them. You will need though to file tickets etc. with more information if you want any chance of any of them looking into.

cheers Chris

> On 3 Apr 2019, at 3:29 am, Ken Preslan <ken at preslan.org> wrote:
> The new xterm does indeed make xterms running natively on my Mac run
> faster than they were yesterday.  However, it does not help the
> performance regression for remote xterms running over X11/ssh forwarding.
> Those are still majorly slower than they were last week.  Local and remote
> Tcl/Tk apps are slower too.  Interestingly, scrolling in the "emacs +x11"
> port is unaffected and seems just as fast as it was.
> Thanks for looking into this.
> On Tue, Apr 02, 2019 at 04:25:38PM +0100, Chris Jones wrote:
>> Hi,
>> I've just pushed an update to xterm enabling the double buffer option in its
>> configuration step. Could those affected please update to 344_1 and report
>> back how that goes.
>> cheers Chris
>> On 02/04/2019 3:29 pm, Ken Cunningham wrote:
>>> looks like the double buffering is not enabled or functioning and xterm is writing directly into the display buffer rather than into the back buffer and blitting it.
>>>> On Apr 2, 2019, at 04:28, Michael Dickens <michaelld at macports.org> wrote:
>>>> This issue started with the prior "xorg-server-devel" bump a while back. I just moved to iTerm2 for the interim; -very- impressed with that terminal manager! I still need Xterm for some things though ... sigh ... - MLD
>>>> On Mon, Apr 1, 2019, at 11:37 PM, Ken Cunningham wrote:
>>>>>> Has anybody else noticed that text scrolling in a xterm is now glacially
>>>>>> slow since xorg-server was upgraded to @1.20.4_0 over the weekend?
>>>>>> X11 is really painful to use now.
>>>>> It certainly is. There is something wrong with the screen redrawing in
>>>>> xterm now, it seems.
>>>>> Ken
> -- 
> Ken Preslan <ken at preslan.org>

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