[Cake] apu2 hangs on net-next

[Cake] apu2 hangs on net-next

[Dave Taht]

I put the latest net-next kernel onto one of my apu2s.

routing *anything* through it, under fq_codel or cake, it runs for a
few seconds under 128 stream load then hangs completely requiring a
reboot. I have to go hook up a serial cable... sigh....

example blowing up test:

flent -H 172.26.16.10 -t '128flows-routed-fq_codel_4'
--te=download_streams=128 tcp_ndown

Tests to it are fine.

I'm curious if the openwrt rc2 for it is stable? 4.9?

-- 

Dave Täht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619

Re: [Cake] apu2 hangs on net-next

[Pete Heist]

> On Jul 31, 2018, at 12:54 AM, Dave Taht <dave.taht@gmail.com> wrote:
> 
> I put the latest net-next kernel onto one of my apu2s.
> 
> routing *anything* through it, under fq_codel or cake, it runs for a
> few seconds under 128 stream load then hangs completely requiring a
> reboot. I have to go hook up a serial cable... sigh....
> 
> example blowing up test:
> 
> flent -H 172.26.16.10 -t '128flows-routed-fq_codel_4'
> --te=download_streams=128 tcp_ndown
> 
> Tests to it are fine.
> 
> I'm curious if the openwrt rc2 for it is stable? 4.9?

This isn’t the same test or kernel, but I don’t see a problem running 128 flows *generated by* the APU2 with fq_codel or Cake at line rate with kernel 4.9.110-1. Of course, when it’s actually generating the traffic, it’s out of CPU at these speeds. I’ll see if I can do a pure routing test later at the lab, to at least exonerate 4.9…

Re: [Cake] apu2 hangs on net-next

[Dave Taht]

On Tue, Jul 31, 2018 at 2:54 AM Pete Heist <pete@heistp.net> wrote:
>
>
> > On Jul 31, 2018, at 12:54 AM, Dave Taht <dave.taht@gmail.com> wrote:
> >
> > I put the latest net-next kernel onto one of my apu2s.
> >
> > routing *anything* through it, under fq_codel or cake, it runs for a
> > few seconds under 128 stream load then hangs completely requiring a
> > reboot. I have to go hook up a serial cable... sigh....
> >
> > example blowing up test:
> >
> > flent -H 172.26.16.10 -t '128flows-routed-fq_codel_4'
> > --te=download_streams=128 tcp_ndown
> >
> > Tests to it are fine.
> >
> > I'm curious if the openwrt rc2 for it is stable? 4.9?
>
> This isn’t the same test or kernel, but I don’t see a problem running 128 flows *generated by* the APU2 with fq_codel or Cake at line rate with kernel 4.9.110-1. Of course, when it’s actually generating the traffic, it’s out of CPU at these speeds. I’ll see if I can do a pure routing test later at the lab, to at least exonerate 4.9…
>

I've had no lockup trouble shaping to 100mbit on this kernel. Just at
attempting line rates.

-- 

Dave Täht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619