Message-ID: <54EBB0AD.8080902@oracle.com>
Date: Mon, 23 Feb 2015 17:58:53 -0500
From: Sasha Levin <sasha.levin@oracle.com>
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To: Andrew Morton <akpm@linux-foundation.org>,
        Davidlohr Bueso <dave@stgolabs.net>
CC: Vlastimil Babka <vbabka@suse.cz>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, Hugh Dickins <hughd@google.com>,
        Andrea Arcangeli <aarcange@redhat.com>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>,
        Michal Hocko <mhocko@suse.cz>,
        Ebru Akagunduz <ebru.akagunduz@gmail.com>,
        Alex Thorlton <athorlton@sgi.com>,
        David Rientjes <rientjes@google.com>,
        Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@kernel.org>
Subject: Re: [RFC 0/6] the big khugepaged redesign
References: <1424696322-21952-1-git-send-email-vbabka@suse.cz>	<1424731603.6539.51.camel@stgolabs.net> <20150223145619.64f3a225b914034a17d4f520@linux-foundation.org>
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On 02/23/2015 05:56 PM, Andrew Morton wrote:
>>> Now I don't have any hard data to show how big these problems are, and I
>>> > > expect we will discuss this on LSF/MM (and hope somebody has such data [3]).
>>> > > But it's certain that e.g. SAP recommends to disable THPs [4] for their apps
>>> > > for performance reasons.
>> > 
>> > There are plenty of examples of this, ie for Oracle:
>> > 
>> > https://blogs.oracle.com/linux/entry/performance_issues_with_transparent_huge
> hm, five months ago and I don't recall seeing any followup to this. 
> Does anyone know what's happening?

I'll dig it up.
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