From: Florian Westphal <fw@strlen.de>
To: Phil Sutter <phil@nwl.cc>
Cc: netdev@vger.kernel.org,
Jesper Dangaard Brouer <brouer@redhat.com>,
Cong Wang <cwang@twopensource.com>,
Eric Dumazet <eric.dumazet@gmail.com>,
David Miller <davem@davemloft.net>
Subject: Re: [net-next PATCH 1/3] net: make default tx_queue_len configurable
Date: Wed, 29 Jul 2015 23:06:18 +0200 [thread overview]
Message-ID: <20150729210618.GF32705@breakpoint.cc> (raw)
In-Reply-To: <1438203103-27013-2-git-send-email-phil@nwl.cc>
Phil Sutter <phil@nwl.cc> wrote:
> Signed-off-by: Phil Sutter <phil@nwl.cc>
> ---
> net/Kconfig | 12 ++++++++++++
> net/ethernet/eth.c | 2 +-
> 2 files changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/net/Kconfig b/net/Kconfig
> index 7021c1b..21c164f 100644
> --- a/net/Kconfig
> +++ b/net/Kconfig
> @@ -48,6 +48,18 @@ config COMPAT_NETLINK_MESSAGES
> config NET_INGRESS
> bool
>
> +config DEFAULT_TX_QUEUE_LEN
> + prompt "Default TX queue length (in packets)" if EXPERT
> + int
> + default 1000 # Ethernet wants good queues
> + help
> + Set the default value of tx_queue_len for newly created network
> + interfaces. It is used by queueing disciplines to determine how many
> + packets to keep in backlog before starting to drop new ones.
> +
> + The default value of 1000 packets is there for a very long time and
> + in combination with GSO way too big.
> +
I can't see how this could be used in a meaningful way.
No distro is going to touch this.
I don't think sysctl value would help either.
next prev parent reply other threads:[~2015-07-29 21:06 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-29 20:51 [net-next PATCH 0/3] Backwards-compatible noqueue in virtual interfaces Phil Sutter
2015-07-29 20:51 ` [net-next PATCH 1/3] net: make default tx_queue_len configurable Phil Sutter
2015-07-29 20:51 ` [net-next PATCH 2/3] net: sched: set tx_queue_len to default when changing noqueue device's qdisc Phil Sutter
2015-07-29 20:51 ` [net-next PATCH 3/3] veth: don't assign a qdisc to veth Phil Sutter
2015-07-29 21:10 ` [net-next PATCH 2/3] net: sched: set tx_queue_len to default when changing noqueue device's qdisc Florian Westphal
2015-07-29 21:10 ` Eric Dumazet
2015-07-29 22:08 ` Phil Sutter
2015-07-29 21:06 ` Florian Westphal [this message]
2015-07-29 21:34 ` [net-next PATCH 1/3] net: make default tx_queue_len configurable Phil Sutter
2015-07-29 21:37 ` David Miller
2015-08-11 15:48 ` Jesper Dangaard Brouer
2015-08-11 16:23 ` Phil Sutter
2015-08-12 1:13 ` Alexei Starovoitov
2015-08-12 14:55 ` Eric Dumazet
2015-08-13 1:13 ` Phil Sutter
2015-08-13 13:10 ` Jesper Dangaard Brouer
2015-08-13 15:06 ` Phil Sutter
2015-07-29 23:10 ` [net-next PATCH 0/3] Backwards-compatible noqueue in virtual interfaces Cong Wang
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