netdev - Re: [PATCH v6] net: batch skb dequeueing from softnet input_pkt

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20100502220642.GD2673@gargoyle.fritz.box>
Date:	Mon, 3 May 2010 00:06:42 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Arjan van de Ven <arjan@...radead.org>,
	David Miller <davem@...emloft.net>, hadi@...erus.ca,
	xiaosuo@...il.com, therbert@...gle.com, shemminger@...tta.com,
	netdev@...r.kernel.org, lenb@...nel.org
Subject: Re: [PATCH v6] net: batch skb dequeueing from softnet
	input_pkt_queue

> But a task blocked on disk IO is probably blocked for a small amount of
> time, while on network, it can be for a long time. I am not sure its the
> right metric.

I think it needs a dynamic timeout.

I agree the reference count as is will not work well for networking.

> 
> I was expecting something based on recent history.
> Say if we have 20.000 wakeups per second, most likely we should not
> enter C2/C3 states...

That's what the menu governour already does, it just doesn't work
in some cases :/

-Andi

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html