Re: Performance issues with vnet jails + epair + bridge

From: Mark Saad <nonesuch_at_longcount.org>
Date: Fri, 13 Sep 2024 12:08:02 UTC

> 
> On Sep 13, 2024, at 5:09 AM, Sad Clouds <cryintothebluesky@gmail.com> wrote:
> 
> Tried both, kernel built with "options RSS" and the following
> in /boot/loader.conf
> 
> net.isr.maxthreads=-1
> net.isr.bindthreads=1
> net.isr.dispatch=deferred
> 
> Not sure if there are race conditions with these implementations, but
> after a few short tests, the epair_task_0 got stuck 100% on CPU and
> stayed there in this state indefinitely, until I rebooted.
> 
>  PID USERNAME    PRI NICE   SIZE    RES STATE    C   TIME    WCPU COMMAND
>    0 root        -64    -     0B   672K CPU0     0   6:24 100.00% kernel{epair_task_0}
> 
> Is RSS considered too experimental, hence not enabled by default?

Sad
   Can you go back a bit you mentioned there is a RPi in the mix ? Some of the raspberries have their nic usb attached under the covers . Which will kill the total speed of things. 
 
Can you cobble together a diagram of what you have on either end ?


---
Mark Saad | nonesuch@longcount.org