From: Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: David Ahern <dsa-qUQiAmfTcIp+XZJcv9eMoEEOCMrvLtNR@public.gmane.org>
Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
shm-qUQiAmfTcIp+XZJcv9eMoEEOCMrvLtNR@public.gmane.org,
roopa-qUQiAmfTcIp+XZJcv9eMoEEOCMrvLtNR@public.gmane.org
Subject: Re: [RFC PATCH net-next] net: Add l3mdev cgroup
Date: Mon, 4 Jan 2016 15:05:18 -0500 [thread overview]
Message-ID: <20160104200518.GD3807@mtj.duckdns.org> (raw)
In-Reply-To: <568ACF13.3030007-qUQiAmfTcIp+XZJcv9eMoEEOCMrvLtNR@public.gmane.org>
Hello,
On Mon, Jan 04, 2016 at 12:59:15PM -0700, David Ahern wrote:
> cgroups have very nice properties that I want to leverage such as
> parent-child inheritance and easy tracking which subsystem instance a task
> belongs. This provides a great kernel foundation for building easy to use
> management tools.
>
> The documentation for cgroups does not restrict a controller to physical
> resources but rather "it may be anything that wants to act on a group of
> processes." That is exactly what I am doing here - I have a network config
> that is applied to a group of processes similar to net_cls and net_prio (but
> as I stated before those are orthogonal, independent settings from the L3
> domain).
Please read the new version of cgroup documentation.
https://git.kernel.org/cgit/linux/kernel/git/tj/cgroup.git/tree/Documentation/cgroup.txt?h=for-4.5
cgroup has experienced a lot of problems doing its main job -
hierarchical resource control - from trying to support random things
which want to group threads. As shown with xt_cgroup, such
identifying usages can be implemented in a way where the subsystem
matches the membership rather than cgroup taking in configurations
which belong to the subsystem, so please investigate that direction.
Thanks.
--
tejun
next prev parent reply other threads:[~2016-01-04 20:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-04 16:32 [RFC PATCH net-next] net: Add l3mdev cgroup David Ahern
[not found] ` <1451925136-13327-1-git-send-email-dsa-qUQiAmfTcIp+XZJcv9eMoEEOCMrvLtNR@public.gmane.org>
2016-01-04 17:58 ` Tejun Heo
2016-01-04 18:53 ` David Ahern
[not found] ` <568ABFC3.3010803-qUQiAmfTcIp+XZJcv9eMoEEOCMrvLtNR@public.gmane.org>
2016-01-04 18:59 ` Tejun Heo
[not found] ` <20160104185936.GA3807-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2016-01-04 19:17 ` David Ahern
2016-01-04 19:23 ` Tejun Heo
2016-01-04 19:59 ` David Ahern
[not found] ` <568ACF13.3030007-qUQiAmfTcIp+XZJcv9eMoEEOCMrvLtNR@public.gmane.org>
2016-01-04 20:05 ` Tejun Heo [this message]
[not found] ` <20160104200518.GD3807-qYNAdHglDFBN0TnZuCh8vA@public.gmane.org>
2016-01-19 16:03 ` Stephen Hemminger
2016-01-19 16:06 ` David Ahern
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