From: myglc2@gmail.com
To: Vladimir Sedach <vas@oneofus.la>
Cc: help-guix <help-guix@gnu.org>
Subject: Re: Why is IceCat/GuixSD slower than Firefox/Debian on headless servers?
Date: Tue, 16 Jan 2018 19:23:57 -0500 [thread overview]
Message-ID: <868tcx49k2.fsf@gmail.com> (raw)
In-Reply-To: <87shb5d1cw.fsf@t43.oneofus.la> (Vladimir Sedach's message of "Tue, 16 Jan 2018 11:56:15 -0800")
On 01/16/2018 at 11:56 Vladimir Sedach writes:
>> Running from a desktop to a headless server, and based on side-by-side
>> clicking, IceCat/GuixSD takes ~5x times as long as Mozilla/Debian to
>> respond to clicks. Further, Mozilla/Debian takes ~5x times as long as
>> Mozilla running on the desktop. The bottom line: IceCat/GuixSD is
>> unbearably slow.
>>
>> Has anyone else seen this?
>>
>> Is there a known IceCat/GuixSD performance problem?
>
> This sounds like an X11 protocol issue. Starting with Firefox 47,
> XRender support is disabled by default:
>
> https://www.reddit.com/r/firefox/comments/4nfmvp/ff_47_unbearable_slow_over_remote_x11/
>
> Basically newer versions of Firefox stop using X11 correctly because
> Mozilla considers X11 "technical debt," and because X11 does not support
> some kinds of graphics acceleration.
>
> Back when Wayland development started the popular ideology became that
> no one needed or wanted remote graphics, if you want it use desktop
> forwarding like VNC, else tough luck. A lot of people bought into that
> and now we are seeing the results.
I'm not a VNC fan (sigh)...
> Check the value of gfx.xrender.enabled in about:config and try turning
> it on/off to see if that changes the performance. It should come enabled
> in Firefox 45, and is probably disabled in the newer IceCat.
Thank you, this was really helpful. gfx.xrender.enabled=false in
IceCat/GuixSD. Enabling it made the IceCat/GuixSD performance about the
same as Firefox/Debian (which comes w/ gfx.xrender.enabled=true).
> If it is lack of XRender causing the problems, the more interesting
> question is why running Firefox 45 remotely is so much slower than
> running it on the desktop.
OK, I tested some more. It look like I was exagerating about firefox
remotely. It looks more like 1/2 as fast. ISTM that ...
Firefox>GTK+>X11(3.4GHz)<--1000BaseT-->XQuartz>Quartz(2.7GHz)>GPU
... could be 1/2 as fast as ...
Firefox>GTK+>Quartz(2.7GHz)>GPU
WDYT?
- George
prev parent reply other threads:[~2018-01-17 0:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-16 4:26 Why is IceCat/GuixSD slower than Firefox/Debian on headless servers? George myglc2 Clemmer
2018-01-16 16:32 ` Ludovic Courtès
2018-01-16 19:56 ` Vladimir Sedach
2018-01-17 0:23 ` myglc2 [this message]
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