linux-kernel - Re: [PATCH] hugetlb: vmstat events for huge page allocations

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Message-Id: <20080401082435.3A47.KOSAKI.MOTOHIRO@jp.fujitsu.com>
Date:	Tue, 01 Apr 2008 08:28:12 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	ebmunson@...ibm.com
Cc:	kosaki.motohiro@...fujitsu.com, akpm@...l.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, agl@...ibm.com
Subject: Re: [PATCH] hugetlb: vmstat events for huge page allocations

Hi

> Allocating huge pages directly from the buddy allocator is not guaranteed
> to succeed.  Success depends on several factors (such as the amount of
> physical memory available and the level of fragmentation).  With the
> addition of dynamic hugetlb pool resizing, allocations can occur much more
> frequently.  For these reasons it is desirable to keep track of huge page
> allocation successes and failures.
> 
> Add two new vmstat entries to track huge page allocations that succeed and
> fail.  The presence of the two entries is contingent upon
> CONFIG_HUGETLB_PAGE being enabled.

In generaly, I like this patch.

Have you seen Andi Kleen's "GB pages hugetlb support" series?
it contain multiple size hugepage support.
if it is merged, Is your patch caused any effect?



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