linux-kernel - Re: [PATCH] doc: add information about max_ptes

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 Sep 2015 15:47:06 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Ebru Akagunduz <ebru.akagunduz@...il.com>
cc:	linux-mm@...ck.org, riel@...hat.com, akpm@...ux-foundation.org,
	oleg@...hat.com, kirill.shutemov@...ux.intel.com,
	dave@...olabs.net, denc716@...il.com, ldufour@...ux.vnet.ibm.com,
	sasha.levin@...cle.com, viro@...iv.linux.org.uk,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] doc: add information about max_ptes_swap

On Fri, 18 Sep 2015, Ebru Akagunduz wrote:

> max_ptes_swap specifies how many pages can be brought in from
> swap when collapsing a group of pages into a transparent huge page.
> 
> /sys/kernel/mm/transparent_hugepage/khugepaged/max_ptes_swap
> 
> A higher value can cause excessive swap IO and waste
> memory. A lower value can prevent THPs from being
> collapsed, resulting fewer pages being collapsed into
> THPs, and lower memory access performance.
> 
> Signed-off-by: Ebru Akagunduz <ebru.akagunduz@...il.com>

Acked-by: David Rientjes <rientjes@...gle.com>
--
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/