linux-kernel - Re: [RFC][PATCH 5/7] UBC: kernel memory accounting (core)

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]

Date:	Mon, 21 Aug 2006 18:23:32 -0700
From:	Rohit Seth <rohitseth@...gle.com>
To:	Kirill Korotaev <dev@...ru>
Cc:	Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Ingo Molnar <mingo@...e.hu>,
	Christoph Hellwig <hch@...radead.org>,
	Pavel Emelianov <xemul@...nvz.org>,
	Andrey Savochkin <saw@...ru>, devel@...nvz.org,
	Rik van Riel <riel@...hat.com>, hugh@...itas.com,
	ckrm-tech@...ts.sourceforge.net, Andi Kleen <ak@...e.de>
Subject: Re: [RFC][PATCH 5/7] UBC: kernel memory accounting (core)

On Mon, 2006-08-21 at 14:43 +0400, Kirill Korotaev wrote:
> >>1. reclaiming user resources is not that good idea as it looks to you.
> >>such solutions end up with lots of resources spent on reclaim.
> >>for user memory reclaims mean consumption of expensive disk I/O bandwidth
> >>which reduces overall system throughput and influences other users.
> >>
> > 
> > 
> > May be I'm overlooking something very obvious.  Please tell me, what
> > happens when a user hits a page fault and the page allocator is easily
> > able to give a page from its pcp list.  But container is over its limit
> > of physical memory.  In your patch there is no attempt by container
> > support to see if some of the user pages are easily reclaimable.  What
> > options a user will have to make sure some room is created.
> The patch set send doesn't control user memory!
> This topic is about kernel memory...
> 


And that is why I asked the question in the very first mail (if this
support is going to come later).

-rohit

-
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/