From: Linus Torvalds <torvalds@linux-foundation.org>
To: Dave Chinner <david@fromorbit.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
xfs@oss.sgi.com, Linux-MM <linux-mm@kvack.org>,
Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
ppc-dev <linuxppc-dev@lists.ozlabs.org>,
Ingo Molnar <mingo@kernel.org>, Mel Gorman <mgorman@suse.de>
Subject: Re: [PATCH 4/4] mm: numa: Slow PTE scan rate if migration failures occur
Date: Mon, 9 Mar 2015 09:52:18 -0700 [thread overview]
Message-ID: <CA+55aFywW5JLq=BU_qb2OG5+pJ-b1v9tiS5Ygi-vtEKbEZ_T5Q@mail.gmail.com> (raw)
In-Reply-To: <20150309112936.GD26657@destitution>
On Mon, Mar 9, 2015 at 4:29 AM, Dave Chinner <david@fromorbit.com> wrote:
>
>> Also, is there some sane way for me to actually see this behavior on a
>> regular machine with just a single socket? Dave is apparently running
>> in some fake-numa setup, I'm wondering if this is easy enough to
>> reproduce that I could see it myself.
>
> Should be - I don't actually use 500TB of storage to generate this -
> 50GB on an SSD is all you need from the storage side. I just use a
> sparse backing file to make it look like a 500TB device. :P
What's your virtual environment setup? Kernel config, and
virtualization environment to actually get that odd fake NUMA thing
happening?
Linus
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Dave Chinner <david@fromorbit.com>
Cc: Ingo Molnar <mingo@kernel.org>, Mel Gorman <mgorman@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>,
xfs@oss.sgi.com, ppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH 4/4] mm: numa: Slow PTE scan rate if migration failures occur
Date: Mon, 9 Mar 2015 09:52:18 -0700 [thread overview]
Message-ID: <CA+55aFywW5JLq=BU_qb2OG5+pJ-b1v9tiS5Ygi-vtEKbEZ_T5Q@mail.gmail.com> (raw)
In-Reply-To: <20150309112936.GD26657@destitution>
On Mon, Mar 9, 2015 at 4:29 AM, Dave Chinner <david@fromorbit.com> wrote:
>
>> Also, is there some sane way for me to actually see this behavior on a
>> regular machine with just a single socket? Dave is apparently running
>> in some fake-numa setup, I'm wondering if this is easy enough to
>> reproduce that I could see it myself.
>
> Should be - I don't actually use 500TB of storage to generate this -
> 50GB on an SSD is all you need from the storage side. I just use a
> sparse backing file to make it look like a 500TB device. :P
What's your virtual environment setup? Kernel config, and
virtualization environment to actually get that odd fake NUMA thing
happening?
Linus
WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Dave Chinner <david@fromorbit.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
xfs@oss.sgi.com, Linux-MM <linux-mm@kvack.org>,
Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
ppc-dev <linuxppc-dev@lists.ozlabs.org>,
Ingo Molnar <mingo@kernel.org>, Mel Gorman <mgorman@suse.de>
Subject: Re: [PATCH 4/4] mm: numa: Slow PTE scan rate if migration failures occur
Date: Mon, 9 Mar 2015 09:52:18 -0700 [thread overview]
Message-ID: <CA+55aFywW5JLq=BU_qb2OG5+pJ-b1v9tiS5Ygi-vtEKbEZ_T5Q@mail.gmail.com> (raw)
In-Reply-To: <20150309112936.GD26657@destitution>
On Mon, Mar 9, 2015 at 4:29 AM, Dave Chinner <david@fromorbit.com> wrote:
>
>> Also, is there some sane way for me to actually see this behavior on a
>> regular machine with just a single socket? Dave is apparently running
>> in some fake-numa setup, I'm wondering if this is easy enough to
>> reproduce that I could see it myself.
>
> Should be - I don't actually use 500TB of storage to generate this -
> 50GB on an SSD is all you need from the storage side. I just use a
> sparse backing file to make it look like a 500TB device. :P
What's your virtual environment setup? Kernel config, and
virtualization environment to actually get that odd fake NUMA thing
happening?
Linus
WARNING: multiple messages have this Message-ID (diff)
From: Linus Torvalds <torvalds@linux-foundation.org>
To: Dave Chinner <david@fromorbit.com>
Cc: Ingo Molnar <mingo@kernel.org>, Mel Gorman <mgorman@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>,
xfs@oss.sgi.com, ppc-dev <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH 4/4] mm: numa: Slow PTE scan rate if migration failures occur
Date: Mon, 9 Mar 2015 09:52:18 -0700 [thread overview]
Message-ID: <CA+55aFywW5JLq=BU_qb2OG5+pJ-b1v9tiS5Ygi-vtEKbEZ_T5Q@mail.gmail.com> (raw)
In-Reply-To: <20150309112936.GD26657@destitution>
On Mon, Mar 9, 2015 at 4:29 AM, Dave Chinner <david@fromorbit.com> wrote:
>
>> Also, is there some sane way for me to actually see this behavior on a
>> regular machine with just a single socket? Dave is apparently running
>> in some fake-numa setup, I'm wondering if this is easy enough to
>> reproduce that I could see it myself.
>
> Should be - I don't actually use 500TB of storage to generate this -
> 50GB on an SSD is all you need from the storage side. I just use a
> sparse backing file to make it look like a 500TB device. :P
What's your virtual environment setup? Kernel config, and
virtualization environment to actually get that odd fake NUMA thing
happening?
Linus
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2015-03-09 16:52 UTC|newest]
Thread overview: 195+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-07 15:20 [RFC PATCH 0/4] Automatic NUMA balancing and PROT_NONE handling followup v2r8 Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` [PATCH 1/4] mm: thp: Return the correct value for change_huge_pmd Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 20:13 ` Linus Torvalds
2015-03-07 20:13 ` Linus Torvalds
2015-03-07 20:13 ` Linus Torvalds
2015-03-07 20:13 ` Linus Torvalds
2015-03-07 20:31 ` Linus Torvalds
2015-03-07 20:31 ` Linus Torvalds
2015-03-07 20:31 ` Linus Torvalds
2015-03-07 20:31 ` Linus Torvalds
2015-03-07 20:56 ` Mel Gorman
2015-03-07 20:56 ` Mel Gorman
2015-03-07 20:56 ` Mel Gorman
2015-03-07 20:56 ` Mel Gorman
2015-03-07 15:20 ` [PATCH 2/4] mm: numa: Remove migrate_ratelimited Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` [PATCH 3/4] mm: numa: Mark huge PTEs young when clearing NUMA hinting faults Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 18:33 ` Linus Torvalds
2015-03-07 18:33 ` Linus Torvalds
2015-03-07 18:33 ` Linus Torvalds
2015-03-07 18:33 ` Linus Torvalds
2015-03-07 18:42 ` Linus Torvalds
2015-03-07 18:42 ` Linus Torvalds
2015-03-07 18:42 ` Linus Torvalds
2015-03-07 18:42 ` Linus Torvalds
2015-03-07 15:20 ` [PATCH 4/4] mm: numa: Slow PTE scan rate if migration failures occur Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 15:20 ` Mel Gorman
2015-03-07 16:36 ` Ingo Molnar
2015-03-07 16:36 ` Ingo Molnar
2015-03-07 16:36 ` Ingo Molnar
2015-03-07 16:36 ` Ingo Molnar
2015-03-07 17:37 ` Mel Gorman
2015-03-07 17:37 ` Mel Gorman
2015-03-07 17:37 ` Mel Gorman
2015-03-07 17:37 ` Mel Gorman
2015-03-08 9:54 ` Ingo Molnar
2015-03-08 9:54 ` Ingo Molnar
2015-03-08 9:54 ` Ingo Molnar
2015-03-08 9:54 ` Ingo Molnar
2015-03-07 19:12 ` Linus Torvalds
2015-03-07 19:12 ` Linus Torvalds
2015-03-07 19:12 ` Linus Torvalds
2015-03-07 19:12 ` Linus Torvalds
2015-03-08 10:02 ` Ingo Molnar
2015-03-08 10:02 ` Ingo Molnar
2015-03-08 10:02 ` Ingo Molnar
2015-03-08 10:02 ` Ingo Molnar
2015-03-08 18:35 ` Linus Torvalds
2015-03-08 18:35 ` Linus Torvalds
2015-03-08 18:35 ` Linus Torvalds
2015-03-08 18:35 ` Linus Torvalds
2015-03-08 18:46 ` Linus Torvalds
2015-03-08 18:46 ` Linus Torvalds
2015-03-08 18:46 ` Linus Torvalds
2015-03-08 18:46 ` Linus Torvalds
2015-03-09 11:29 ` Dave Chinner
2015-03-09 11:29 ` Dave Chinner
2015-03-09 11:29 ` Dave Chinner
2015-03-09 11:29 ` Dave Chinner
2015-03-09 16:52 ` Linus Torvalds [this message]
2015-03-09 16:52 ` Linus Torvalds
2015-03-09 16:52 ` Linus Torvalds
2015-03-09 16:52 ` Linus Torvalds
2015-03-09 19:19 ` Dave Chinner
2015-03-09 19:19 ` Dave Chinner
2015-03-09 19:19 ` Dave Chinner
2015-03-10 23:55 ` Linus Torvalds
2015-03-10 23:55 ` Linus Torvalds
2015-03-10 23:55 ` Linus Torvalds
2015-03-10 23:55 ` Linus Torvalds
2015-03-12 13:10 ` Mel Gorman
2015-03-12 13:10 ` Mel Gorman
2015-03-12 13:10 ` Mel Gorman
2015-03-12 13:10 ` Mel Gorman
2015-03-12 16:20 ` Linus Torvalds
2015-03-12 16:20 ` Linus Torvalds
2015-03-12 16:20 ` Linus Torvalds
2015-03-12 16:20 ` Linus Torvalds
2015-03-12 18:49 ` Mel Gorman
2015-03-12 18:49 ` Mel Gorman
2015-03-12 18:49 ` Mel Gorman
2015-03-12 18:49 ` Mel Gorman
2015-03-17 7:06 ` Dave Chinner
2015-03-17 7:06 ` Dave Chinner
2015-03-17 7:06 ` Dave Chinner
2015-03-17 7:06 ` Dave Chinner
2015-03-17 16:53 ` Linus Torvalds
2015-03-17 16:53 ` Linus Torvalds
2015-03-17 16:53 ` Linus Torvalds
2015-03-17 16:53 ` Linus Torvalds
2015-03-17 20:51 ` Dave Chinner
2015-03-17 20:51 ` Dave Chinner
2015-03-17 20:51 ` Dave Chinner
2015-03-17 20:51 ` Dave Chinner
2015-03-17 21:30 ` Linus Torvalds
2015-03-17 21:30 ` Linus Torvalds
2015-03-17 21:30 ` Linus Torvalds
2015-03-17 21:30 ` Linus Torvalds
2015-03-17 22:08 ` Dave Chinner
2015-03-17 22:08 ` Dave Chinner
2015-03-17 22:08 ` Dave Chinner
2015-03-17 22:08 ` Dave Chinner
2015-03-18 16:08 ` Linus Torvalds
2015-03-18 16:08 ` Linus Torvalds
2015-03-18 16:08 ` Linus Torvalds
2015-03-18 16:08 ` Linus Torvalds
2015-03-18 17:31 ` Linus Torvalds
2015-03-18 17:31 ` Linus Torvalds
2015-03-18 17:31 ` Linus Torvalds
2015-03-18 17:31 ` Linus Torvalds
2015-03-18 22:23 ` Dave Chinner
2015-03-18 22:23 ` Dave Chinner
2015-03-18 22:23 ` Dave Chinner
2015-03-18 22:23 ` Dave Chinner
2015-03-19 14:10 ` Mel Gorman
2015-03-19 14:10 ` Mel Gorman
2015-03-19 14:10 ` Mel Gorman
2015-03-19 14:10 ` Mel Gorman
2015-03-19 18:09 ` Linus Torvalds
2015-03-19 18:09 ` Linus Torvalds
2015-03-19 18:09 ` Linus Torvalds
2015-03-19 18:09 ` Linus Torvalds
2015-03-19 21:41 ` Linus Torvalds
2015-03-19 21:41 ` Linus Torvalds
2015-03-19 21:41 ` Linus Torvalds
2015-03-19 21:41 ` Linus Torvalds
2015-03-19 22:41 ` Dave Chinner
2015-03-19 22:41 ` Dave Chinner
2015-03-19 22:41 ` Dave Chinner
2015-03-19 22:41 ` Dave Chinner
2015-03-19 23:05 ` Linus Torvalds
2015-03-19 23:05 ` Linus Torvalds
2015-03-19 23:05 ` Linus Torvalds
2015-03-19 23:05 ` Linus Torvalds
2015-03-19 23:23 ` Dave Chinner
2015-03-19 23:23 ` Dave Chinner
2015-03-19 23:23 ` Dave Chinner
2015-03-19 23:23 ` Dave Chinner
2015-03-20 0:23 ` Dave Chinner
2015-03-20 0:23 ` Dave Chinner
2015-03-20 0:23 ` Dave Chinner
2015-03-20 0:23 ` Dave Chinner
2015-03-20 1:29 ` Linus Torvalds
2015-03-20 1:29 ` Linus Torvalds
2015-03-20 1:29 ` Linus Torvalds
2015-03-20 1:29 ` Linus Torvalds
2015-03-20 4:13 ` Dave Chinner
2015-03-20 4:13 ` Dave Chinner
2015-03-20 4:13 ` Dave Chinner
2015-03-20 4:13 ` Dave Chinner
2015-03-20 17:02 ` Linus Torvalds
2015-03-20 17:02 ` Linus Torvalds
2015-03-20 17:02 ` Linus Torvalds
2015-03-20 17:02 ` Linus Torvalds
2015-03-23 12:01 ` Mel Gorman
2015-03-23 12:01 ` Mel Gorman
2015-03-23 12:01 ` Mel Gorman
2015-03-23 12:01 ` Mel Gorman
2015-03-20 10:12 ` Mel Gorman
2015-03-20 10:12 ` Mel Gorman
2015-03-20 10:12 ` Mel Gorman
2015-03-20 10:12 ` Mel Gorman
2015-03-20 9:56 ` Mel Gorman
2015-03-20 9:56 ` Mel Gorman
2015-03-20 9:56 ` Mel Gorman
2015-03-20 9:56 ` Mel Gorman
2015-03-08 20:40 ` Mel Gorman
2015-03-08 20:40 ` Mel Gorman
2015-03-08 20:40 ` Mel Gorman
2015-03-08 20:40 ` Mel Gorman
2015-03-09 21:02 ` Mel Gorman
2015-03-09 21:02 ` Mel Gorman
2015-03-09 21:02 ` Mel Gorman
2015-03-09 21:02 ` Mel Gorman
2015-03-10 13:08 ` Mel Gorman
2015-03-10 13:08 ` Mel Gorman
2015-03-10 13:08 ` Mel Gorman
2015-03-10 13:08 ` Mel Gorman
2015-03-08 9:41 ` Ingo Molnar
2015-03-08 9:41 ` Ingo Molnar
2015-03-08 9:41 ` Ingo Molnar
2015-03-08 9:41 ` Ingo Molnar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CA+55aFywW5JLq=BU_qb2OG5+pJ-b1v9tiS5Ygi-vtEKbEZ_T5Q@mail.gmail.com' \
--to=torvalds@linux-foundation.org \
--cc=akpm@linux-foundation.org \
--cc=aneesh.kumar@linux.vnet.ibm.com \
--cc=david@fromorbit.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=mgorman@suse.de \
--cc=mingo@kernel.org \
--cc=xfs@oss.sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.