Re: gvim visual mode very slow, even with -u NONE

> Hi all,
> I am having problems with graphical vim since not too long ago;
> terminal version works as great as always.
>
> The problem is that it became very choppy - there's about 500ms-1s
> lag between any keypress and reaction. Keypresses are queued, so if
> I rapidly type, they're executed in sequence, slowly.
>
> I am running archlinux with xmonad wm. Most of my apps run inside
> urxvt, with browser (palemoon) and gvim being the only graphical
> apps.
> I am running the compositor (compton), but killing it changed
> nothing.
> The hardware is nothing spectacular, 4y old laptop.
>
> What follows is list of things I tried before posting here:
>
> * updating my system, rebooting. No change.
> * vim -g -u NONE -U NONE. No change.
> * killing all other apps. No change.
> * comparing vim vs. vim -g. Terminal version runs normally.
> * strace $(pidof gvim). A gigazillion of failed recvmsg calls and
> few istats. I assumed this is normal behavior because it happens
> in terminal version too.
> * research on open issues: stackoverflow, stackexchange, vim wiki.
> Followed advice on changing fonts, didn't help. I don't use cursor
> lines and columns.
> * asked on #vim on Freenode. Got told to try with -u NONE, and try
> disabling compositor. Didn't help.
> * ldd vim to check which libs are used, went to check libpango and
> libcairo bug trackers for potential issues. Didn't find anything.
>
>
> I am not sure what is causing the issue. I found an advice to try
> alternative builds of gvim (using Athena), but before going down
> that road I'd like to try and see if I can fix this, especially
> because it might be affecting other parts of my system too - its
> just that the only symptom I see is in gvim.
>
> I don't know what else might be relevant. If there's anything,
> please ask.

What system is this on? Some kind of Linux?
What GUI are you using?

Since it works OK in the terminal version the selection mechanism
probably works OK. But having half a second for updating the
highlighting is unlikely. Can't guess what the problem is.

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