From: Andi Kleen <andi@firstfloor.org>
To: James Hartshorn <jhartshorn@connexity.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: Can we disable transparent hugepages for lack of a legitimate use case please?
Date: Thu, 03 Sep 2015 12:33:06 -0700 [thread overview]
Message-ID: <878u8n47t9.fsf@tassilo.jf.intel.com> (raw)
In-Reply-To: <BLUPR02MB1698DD8F0D1550366489DF8CCD620@BLUPR02MB1698.namprd02.prod.outlook.com> (James Hartshorn's message of "Mon, 24 Aug 2015 20:12:24 +0000")
James Hartshorn <jhartshorn@connexity.com> writes:
Your report seems to completely lack any detail, like
kernel version, description of the problem, etc.
> I've been struggling with transparent hugepage performance issues, and
> can't seem to find anyone who actually uses it intentionally.
> Virtually every database that runs on linux however recommends
> disabling it or setting it to madvise. I'm referring to:
Please see if you can reproduce your problem on a recent mainline
kernel (there were a lot of compaction improvements recently,
which can be a source of issues with THP)
If yes then please submit a test case and it can be investigated.
If no then update.
-Andi
--
ak@linux.intel.com -- Speaking for myself only
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prev parent reply other threads:[~2015-09-03 19:33 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-24 20:12 Can we disable transparent hugepages for lack of a legitimate use case please? James Hartshorn
2015-08-24 20:20 ` Bridgman, John
2015-08-24 20:46 ` James Hartshorn
2015-08-24 23:20 ` Theodore Ts'o
2015-09-10 16:45 ` Andrea Arcangeli
2015-09-10 17:02 ` Andres Freund
2015-09-14 12:37 ` Vlastimil Babka
2015-08-25 9:25 ` Konstantin Khlebnikov
2015-08-25 9:56 ` Vlastimil Babka
2015-09-01 22:26 ` David Rientjes
2015-09-02 8:55 ` Konstantin Khlebnikov
2015-09-02 9:06 ` Vlastimil Babka
2015-09-09 22:05 ` Andrea Arcangeli
2015-09-03 19:33 ` Andi Kleen [this message]
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