linux-kernel - Re: [ckrm-tech] [PATCH 0/7] containers (V7): Generic Process Containers

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]

Date:	Mon, 12 Feb 2007 16:42:15 -0800
From:	"Paul Menage" <menage@...gle.com>
To:	"Sam Vilain" <sam@...ain.net>
Cc:	vatsa@...ibm.com, sekharan@...ibm.com,
	ckrm-tech@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	xemul@...ru, dev@...ru, rohitseth@...gle.com, pj@....com,
	ebiederm@...ssion.com, winget@...gle.com,
	containers@...ts.osdl.org, serue@...ibm.com
Subject: Re: [ckrm-tech] [PATCH 0/7] containers (V7): Generic Process Containers

On 2/12/07, Sam Vilain <sam@...ain.net> wrote:
> Ask yourself this - what do you need the container structure for so
> badly, that virtualising the individual resources does not provide for?

Primarily, that otherwise every module that wants to affect/monitor
behaviour of a group of associated processes has to implement its own
process grouping abstraction.

As an example, the CPU accounting patch that in included in my patch
set as an illustration of a simple resource monitoring module is just
250 lines, almost entirely in one file; if it also had to handle
associating tasks together into groups and presenting a filesystem
interface to the user it would be far larger and would have a much
bigger footprint on the kernel.

>From the point of view of the virtual server containers, the advantage
is that you're integrated with a standard filesystem interface for
determining group membership. It does become simpler to combine
virtual servers and resource controllers, although I grant you that
you could juggle that from userspace without the additional kernel
support.

Paul
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/