From: Rik van Riel <riel@redhat.com>
To: Ebru Akagunduz <ebru.akagunduz@gmail.com>, linux-mm@kvack.org
Cc: akpm@linux-foundation.org, rientjes@google.com, oleg@redhat.com,
kirill.shutemov@linux.intel.com, dave@stgolabs.net,
denc716@gmail.com, ldufour@linux.vnet.ibm.com,
sasha.levin@oracle.com, viro@zeniv.linux.org.uk,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] doc: add information about max_ptes_swap
Date: Fri, 18 Sep 2015 10:40:15 -0400 [thread overview]
Message-ID: <55FC224F.2020308@redhat.com> (raw)
In-Reply-To: <1442525698-22598-1-git-send-email-ebru.akagunduz@gmail.com>
On 09/17/2015 05:34 PM, 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@gmail.com>
Acked-by: Rik van Riel <riel@redhat.com>
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WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: Ebru Akagunduz <ebru.akagunduz@gmail.com>, linux-mm@kvack.org
Cc: akpm@linux-foundation.org, rientjes@google.com, oleg@redhat.com,
kirill.shutemov@linux.intel.com, dave@stgolabs.net,
denc716@gmail.com, ldufour@linux.vnet.ibm.com,
sasha.levin@oracle.com, viro@zeniv.linux.org.uk,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] doc: add information about max_ptes_swap
Date: Fri, 18 Sep 2015 10:40:15 -0400 [thread overview]
Message-ID: <55FC224F.2020308@redhat.com> (raw)
In-Reply-To: <1442525698-22598-1-git-send-email-ebru.akagunduz@gmail.com>
On 09/17/2015 05:34 PM, 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@gmail.com>
Acked-by: Rik van Riel <riel@redhat.com>
--
All rights reversed
next prev parent reply other threads:[~2015-09-18 14:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-17 21:34 [PATCH] doc: add information about max_ptes_swap Ebru Akagunduz
2015-09-17 21:34 ` Ebru Akagunduz
2015-09-18 14:40 ` Rik van Riel [this message]
2015-09-18 14:40 ` Rik van Riel
2015-09-21 22:47 ` David Rientjes
2015-09-21 22:47 ` David Rientjes
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