From: David Miller <davem@davemloft.net>
To: khlebnikov@yandex-team.ru
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
kuba@kernel.org, zeil@yandex-team.ru, tedheadster@gmail.com
Subject: Re: [PATCH] net: revert default NAPI poll timeout to 2 jiffies
Date: Tue, 07 Apr 2020 18:31:42 -0700 (PDT) [thread overview]
Message-ID: <20200407.183142.390281754035873578.davem@davemloft.net> (raw)
In-Reply-To: <158617317267.1170.12944758673162826206.stgit@buzz>
From: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Date: Mon, 06 Apr 2020 14:39:32 +0300
> For HZ < 1000 timeout 2000us rounds up to 1 jiffy but expires randomly
> because next timer interrupt could come shortly after starting softirq.
>
> For commonly used CONFIG_HZ=1000 nothing changes.
>
> Fixes: 7acf8a1e8a28 ("Replace 2 jiffies with sysctl netdev_budget_usecs to enable softirq tuning")
> Reported-by: Dmitry Yakunin <zeil@yandex-team.ru>
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Applied, thank you.
prev parent reply other threads:[~2020-04-08 1:31 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-06 11:39 [PATCH] net: revert default NAPI poll timeout to 2 jiffies Konstantin Khlebnikov
2020-04-08 1:31 ` David Miller [this message]
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