From: Dave Hansen <haveblue@us.ibm.com>
To: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
Cc: 'Badari Pulavarty' <pbadari@gmail.com>,
stanojr@blackhole.websupport.sk, linux-mm <linux-mm@kvack.org>
Subject: RE: slow hugetlb from 2.6.15
Date: Tue, 27 Jun 2006 14:51:13 -0700 [thread overview]
Message-ID: <1151445073.24103.37.camel@localhost.localdomain> (raw)
In-Reply-To: <000001c69a1f$2171af00$e234030a@amr.corp.intel.com>
On Tue, 2006-06-27 at 12:23 -0700, Chen, Kenneth W wrote:
> Though it is a mystery to
> see that faulting on hugetlb page is significantly longer than
> faulting a
> normal page.
There's an awful lot more data to zero when allocating a page which is
1000 times bigger. It would be really interesting to see kernel
profiles, but my money is on clear_huge_page().
-- Dave
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next prev parent reply other threads:[~2006-06-27 21:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-27 18:23 slow hugetlb from 2.6.15 stanojr
2006-06-27 18:47 ` Badari Pulavarty
2006-06-27 19:23 ` Chen, Kenneth W
2006-06-27 21:51 ` Dave Hansen [this message]
2006-06-27 22:00 ` Chen, Kenneth W
2006-06-27 18:51 ` Nish Aravamudan
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