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From: Frederic Weisbecker <frederic@kernel.org>
To: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Levin Alexander <alexander.levin@verizon.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Hannes Frederic Sowa <hannes@stressinduktion.org>,
	"Paul E . McKenney" <paulmck@linux.vnet.ibm.com>,
	Wanpeng Li <wanpeng.li@hotmail.com>,
	Dmitry Safonov <dima@arista.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	Paolo Abeni <pabeni@redhat.com>, Radu Rendec <rrendec@arista.com>,
	Ingo Molnar <mingo@kernel.org>,
	Stanislaw Gruszka <sgruszka@redhat.com>,
	Rik van Riel <riel@redhat.com>,
	Eric Dumazet <edumazet@google.com>,
	David Miller <davem@davemloft.net>
Subject: Re: [RFC PATCH 0/4] softirq: Per vector threading v3
Date: Thu, 1 Mar 2018 16:21:33 +0100	[thread overview]
Message-ID: <20180301152132.GB29639@lerouge> (raw)
In-Reply-To: <20180207121844.0282138d@vento.lan>

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@kernel.org> 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?

      reply	other threads:[~2018-03-01 15:21 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-19 15:46 [RFC PATCH 0/4] softirq: Per vector threading v3 Frederic Weisbecker
2018-01-19 15:46 ` [RFC PATCH 1/4] softirq: Limit vector to a single iteration on IRQ tail Frederic Weisbecker
2018-01-19 16:16   ` David Miller
2018-01-19 18:25     ` Linus Torvalds
2018-01-19 18:47       ` David Miller
2018-01-21 16:30         ` Frederic Weisbecker
2018-01-21 16:57           ` David Miller
2018-01-19 15:46 ` [RFC PATCH 2/4] softirq: Per vector deferment to workqueue Frederic Weisbecker
2018-01-20  8:41   ` Pavan Kondeti
2018-01-21 16:11     ` Frederic Weisbecker
2018-01-21 17:50       ` Pavan Kondeti
2018-01-21 20:48         ` Frederic Weisbecker
2018-02-08 17:44   ` Sebastian Andrzej Siewior
2018-02-08 18:45     ` David Miller
2018-02-08 20:14       ` Dmitry Safonov
2018-02-08 20:22         ` David Miller
2018-02-08 20:30           ` Dmitry Safonov
2018-02-09  4:11             ` Mike Galbraith
2018-02-09 12:35               ` Sebastian Andrzej Siewior
2018-02-15 16:13     ` Frederic Weisbecker
2018-02-15 16:58       ` Sebastian Andrzej Siewior
2018-01-19 15:46 ` [RFC PATCH 3/4] softirq: Defer to workqueue when rescheduling is needed Frederic Weisbecker
2018-01-19 15:46 ` [RFC PATCH 4/4] softirq: Replace ksoftirqd with workqueues entirely Frederic Weisbecker
2018-01-22 19:58 ` [RFC PATCH 0/4] softirq: Per vector threading v3 Mauro Carvalho Chehab
2018-01-23 10:13 ` Paolo Abeni
2018-01-23 12:32   ` Dmitry Safonov
2018-01-24  2:12     ` Frederic Weisbecker
2018-01-23 16:22   ` David Miller
2018-01-23 16:57     ` Paolo Abeni
2018-01-23 17:42       ` Linus Torvalds
2018-01-23 18:01         ` Mike Galbraith
2018-01-23 18:24         ` David Miller
2018-01-24  1:57           ` Frederic Weisbecker
2018-01-24  2:01             ` Frederic Weisbecker
2018-01-24 14:54         ` Paolo Abeni
2018-01-24 15:05           ` David Miller
2018-01-24 16:11             ` Paolo Abeni
2018-02-07 14:18 ` Mauro Carvalho Chehab
2018-03-01 15:21   ` Frederic Weisbecker [this message]

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