From: Jakub Kicinski <kuba@kernel.org>
To: Heiner Kallweit <hkallweit1@gmail.com>
Cc: David Miller <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: [PATCH net-next] net: don't set sw irq coalescing defaults in case of PREEMPT_RT
Date: Wed, 31 May 2023 11:09:54 -0700 [thread overview]
Message-ID: <20230531110954.6cbf69d1@kernel.org> (raw)
In-Reply-To: <87535ce9-4780-d982-0535-d010720aa636@gmail.com>
On Wed, 31 May 2023 10:18:40 +0200 Heiner Kallweit wrote:
> > Did someone complain? I don't have an opinion, but I'm curious what
> > prompted the patch.
>
> No direct complain, and not covering exactly this point.
> Background: I witnessed some discussions between PREEMPT_RT users
> (e.g. from linuxcnc project) regarding network latency with
> RTL8168 NICs. It seems these users aren't really aware of the
> userspace knobs that the kernel provides for RT optimization.
> To make their life easier we could optimize few things for latency
> and use PREEMPT_RT as an indicator.
Makes sense.
next prev parent reply other threads:[~2023-05-31 18:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-28 17:39 [PATCH net-next] net: don't set sw irq coalescing defaults in case of PREEMPT_RT Heiner Kallweit
2023-05-31 6:30 ` Jakub Kicinski
2023-05-31 8:18 ` Heiner Kallweit
2023-05-31 18:09 ` Jakub Kicinski [this message]
2023-06-01 5:40 ` patchwork-bot+netdevbpf
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