netdev - Re: [PATCH net-next 0/4] net_sched: bulk dequeue and deferred drops

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] [day] [month] [year] [list]

Message-Id: <20160625.122020.739429682078560293.davem@davemloft.net>
Date:	Sat, 25 Jun 2016 12:20:20 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	edumazet@...gle.com
Cc:	netdev@...r.kernel.org, john.r.fastabend@...el.com,
	brouer@...hat.com, eric.dumazet@...il.com
Subject: Re: [PATCH net-next 0/4] net_sched: bulk dequeue and deferred drops

From: Eric Dumazet <edumazet@...gle.com>
Date: Tue, 21 Jun 2016 23:16:48 -0700

> First patch adds an additional parameter to ->enqueue() qdisc method
> so that drops can be done outside of critical section
> (after locks are released).
> 
> Then fq_codel can have a small optimization to reduce number of cache
> lines misses during a drop event
> (possibly accumulating hundreds of packets to be freed).
> 
> A small htb change exports the backlog in class dumps.
> 
> Final patch adds bulk dequeue to qdiscs that were lacking this feature.
> 
> This series brings a nice qdisc performance increase (more than 80 %
> in some cases).

Series applied, thanks Eric.