Re: [RFC PATCH 0/4] softirq: Per vector threading v3

[Frederic Weisbecker]

On Wed, Feb 07, 2018 at 12:18:44PM -0200, Mauro Carvalho Chehab wrote:
> Em Fri, 19 Jan 2018 16:46:10 +0100
> Frederic Weisbecker <frederic@xxxxxxxxxx> escreveu:
> 
> > As per Linus suggestion, this take doesn't limit the number of occurences
> > per jiffy anymore but instead defers a vector to workqueues as soon as
> > it gets re-enqueued on IRQ tail.
> > 
> > No tunable here, so testing should be easier.
> 
> Sorry for taking so long to test it. Just returned this week from a 2
> weeks travel, and had first to submit media patches for the merge window.
> 
> Didn't work. With this patch series, it still lose frames with
> usb bulk transfers, while recording DVB programs with tvheadend.

How can we reproduce this workload?