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From: Dave Taht <dave.taht@gmail.com>
To: Juliusz Chroboczek <jch@irif.fr>
Cc: galene@lists.galene.org
Subject: [Galene] Re: we broke galene head pretty badly today
Date: Mon, 5 Jul 2021 17:41:35 -0700	[thread overview]
Message-ID: <CAA93jw60VySmTHrBpDVkL2y-WCFYuT=KitDWrzqHpnA8mmV-8w@mail.gmail.com> (raw)
In-Reply-To: <87wnq4wk3v.wl-jch@irif.fr>

yes a codel-ly approach would be helpful, but what stage of the
pipeline is costing the most cpu?

What I saw in another set of tests was context switching cost a lot
and that perhaps recvmmsg and sendmmsg would help there.

Still, when you run out of cpu, dropping whole frames would be good.
you could interleave dropping a frame per sender perhaps?

do we know what other sfus do?

On Mon, Jul 5, 2021 at 2:01 PM Juliusz Chroboczek <jch@irif.fr> wrote:
>
> > Galčne currently reacts badly to being out of CPU.  I've tried to design
> > it so it would drop frames and keep the audio going, but I've failed.
>
> Just to be clear, I'm not looking at the load average or CPU utilisation,
> since these measures are typically unreliable on modern CPUs (which vary
> their speed dynamically) let alone on VMs.  I need a quick way to answer
> the following question: I've got this packet that I can drop without
> corrupting the video, should I drop it or not.
>
> Timestamp the packets at ingress time and drop anything droppable that's
> too old?  Any other ideas?
>
> -- Julius



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Dave Täht CTO, TekLibre, LLC

  reply	other threads:[~2021-07-06  0:41 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-02  4:39 [Galene] " Dave Taht
2021-06-02 10:48 ` [Galene] " Juliusz Chroboczek
2021-06-02 11:06   ` Dave Taht
2021-07-05 20:46 ` Juliusz Chroboczek
2021-07-05 21:01   ` Juliusz Chroboczek
2021-07-06  0:41     ` Dave Taht [this message]
2021-07-06 10:52       ` Juliusz Chroboczek
2021-07-06 13:44         ` Dave Taht
2021-07-06 13:47           ` Dave Taht
2021-07-06 15:56             ` Juliusz Chroboczek

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