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Date: Wed, 30 Sep 2020 08:23:15 +0000 From: David Laight <David.Laight@...LAB.COM> To: 'Jakub Kicinski' <kuba@...nel.org>, Wei Wang <weiwan@...gle.com> CC: Eric Dumazet <edumazet@...gle.com>, "David S . Miller" <davem@...emloft.net>, netdev <netdev@...r.kernel.org>, Paolo Abeni <pabeni@...hat.com>, Hannes Frederic Sowa <hannes@...essinduktion.org>, "Felix Fietkau" <nbd@....name> Subject: RE: [RFC PATCH net-next 0/6] implement kthread based napi poll 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 - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
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