From: David Laight <David.Laight@ACULAB.COM>
To: 'Jakub Kicinski' <kuba@kernel.org>, Wei Wang <weiwan@google.com>
Cc: Eric Dumazet <edumazet@google.com>,
"David S . Miller" <davem@davemloft.net>,
netdev <netdev@vger.kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Hannes Frederic Sowa <hannes@stressinduktion.org>,
"Felix Fietkau" <nbd@nbd.name>
Subject: RE: [RFC PATCH net-next 0/6] implement kthread based napi poll
Date: Wed, 30 Sep 2020 08:23:15 +0000 [thread overview]
Message-ID: <4600c4617b4b41fa8522ab2d0c8ea822@AcuMS.aculab.com> (raw)
In-Reply-To: <20200929144847.05f3dcf7@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
From: Jakub Kicinski
> Sent: 29 September 2020 22:49
...
> Isn't the fundamental problem that scheduler works at ms scale while
> where we're talking about 100us at most? And AFAICT scheduler doesn't
> have a knob to adjust migration cost per process? :(
Have you tried setting the application processes to RT priorities?
The scheduler tries very hard (maybe too hard) to avoid migrating
RT processes.
David
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Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
next prev parent reply other threads:[~2020-09-30 8:23 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-14 17:24 [RFC PATCH net-next 0/6] implement kthread based napi poll Wei Wang
2020-09-14 17:24 ` [RFC PATCH net-next 1/6] net: implement threaded-able napi poll loop support Wei Wang
2020-09-25 19:45 ` Hannes Frederic Sowa
2020-09-25 23:50 ` Wei Wang
2020-09-26 14:22 ` Hannes Frederic Sowa
2020-09-28 8:45 ` Paolo Abeni
2020-09-28 18:13 ` Wei Wang
2020-09-14 17:24 ` [RFC PATCH net-next 2/6] net: add sysfs attribute to control napi threaded mode Wei Wang
2020-09-15 2:50 ` kernel test robot
2020-09-15 3:47 ` kernel test robot
2020-09-14 17:24 ` [RFC PATCH net-next 3/6] net: extract napi poll functionality to __napi_poll() Wei Wang
2020-09-14 17:24 ` [RFC PATCH net-next 4/6] net: modify kthread handler to use __napi_poll() Wei Wang
2020-09-14 17:24 ` [RFC PATCH net-next 5/6] net: process RPS/RFS work in kthread context Wei Wang
2020-09-18 22:44 ` Wei Wang
2020-09-21 8:11 ` Eric Dumazet
2020-09-14 17:24 ` [RFC PATCH net-next 6/6] net: improve napi threaded config Wei Wang
2020-09-25 13:48 ` [RFC PATCH net-next 0/6] implement kthread based napi poll Magnus Karlsson
2020-09-25 17:15 ` Wei Wang
2020-09-25 17:30 ` Eric Dumazet
2020-09-25 18:16 ` Stephen Hemminger
2020-09-25 18:23 ` Eric Dumazet
2020-09-25 19:00 ` Stephen Hemminger
2020-09-25 19:06 ` Jakub Kicinski
2020-09-28 14:07 ` Magnus Karlsson
2020-09-28 17:43 ` Eric Dumazet
2020-09-28 18:15 ` Wei Wang
2020-09-29 19:19 ` Jakub Kicinski
2020-09-29 20:16 ` Wei Wang
2020-09-29 21:48 ` Jakub Kicinski
2020-09-30 8:23 ` David Laight [this message]
2020-09-30 8:58 ` Paolo Abeni
2020-09-30 15:58 ` Jakub Kicinski
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