netdev - Re: OFT - reserving CPU's for networking

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: <20100501.151333.199039545.davem@davemloft.net>
Date:	Sat, 01 May 2010 15:13:33 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	gandalf@...fs.se
Cc:	tglx@...utronix.de, shemminger@...tta.com, eric.dumazet@...il.com,
	ak@...goyle.fritz.box, netdev@...r.kernel.org, andi@...stfloor.org,
	peterz@...radead.org
Subject: Re: OFT - reserving CPU's for networking

From: Martin Josefsson <gandalf@...fs.se>
Date: Sat, 1 May 2010 22:31:05 +0200 (CEST)

> On Fri, 30 Apr 2010, David Miller wrote:
> 
>> Then we can do cool tricks like having the cpu spin on a mwait() on
>> the
>> network device's status descriptor in memory.
> 
> Can you have mwait monitor multiple cachelines for stores?

The idea is that if you have hundreds of cpus threads (several of my
machines do, and it's not too long before these kinds of boxes will be
common) in your machine you can spare one for each NIC.
--
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