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
| ||
|
Message-ID: <20160530162759.GD8402@wantstofly.org> Date: Mon, 30 May 2016 19:27:59 +0300 From: Lennert Buytenhek <buytenh@...tstofly.org> To: Herbert Xu <herbert@...dor.apana.org.au> Cc: Patrick McHardy <kaber@...sh.net>, netdev@...r.kernel.org Subject: Re: [PATCH 0/2] macvlan: Avoid unnecessary multicast cloning On Mon, May 30, 2016 at 04:17:52PM +0800, Herbert Xu wrote: > > Commit 412ca1550cbecb2c ("macvlan: Move broadcasts into a work queue") > > moved processing of all macvlan multicasts into a work queue. This > > causes a noticable performance regression when there is heavy multicast > > traffic on the underlying interface for multicast groups that the > > macvlan subinterfaces are not members of, in which case we end up > > cloning all those packets and then freeing them again from a work queue > > without really doing any useful work with them in between. > > OK so your motivation is to get rid of the unnecessary memory > allocation, right? That and stack switches to kworker threads and serialisation on the bc_queue queue lock.
Powered by blists - more mailing lists