netdev - Re: [PATCH 1/4] [NET_SCHED] explict hold dev tx lock

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 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]

Date:	Mon, 08 Oct 2007 14:05:22 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	hadi@...erus.ca
Cc:	peter.p.waskiewicz.jr@...el.com, krkumar2@...ibm.com,
	johnpol@....mipt.ru, herbert@...dor.apana.org.au, kaber@...sh.net,
	shemminger@...ux-foundation.org, jagana@...ibm.com,
	Robert.Olsson@...a.slu.se, rick.jones2@...com, xma@...ibm.com,
	gaagaan@...il.com, netdev@...r.kernel.org, rdreier@...co.com,
	mcarlson@...adcom.com, jeff@...zik.org, mchan@...adcom.com,
	general@...ts.openfabrics.org, kumarkr@...ux.ibm.com,
	tgraf@...g.ch, randy.dunlap@...cle.com, sri@...ibm.com
Subject: Re: [PATCH 1/4] [NET_SCHED] explict hold dev tx lock

From: jamal <hadi@...erus.ca>
Date: Mon, 08 Oct 2007 09:34:50 -0400

> The brain-block i am having is the parallelization aspect of it.
> Whatever scheme it is - it needs to ensure the scheduler works as
> expected. For example, if it was a strict prio scheduler i would expect
> that whatever goes out is always high priority first and never ever
> allow a low prio packet out at any time theres something high prio
> needing to go out. If i have the two priorities running on two cpus,
> then i cant guarantee that effect.
> IOW, i see the scheduler/qdisc level as not being split across parallel
> cpus. Do i make any sense?

Picture it like N tubes you stick packets into, and the tubes are
processed using DRR.

So packets within a tube won't be reordered, but reordering amongst
tubes is definitely possible.
-
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