linux-kernel - Re: [PATCH v3 next/akpm] aio: convert the ioctx list to radix tree

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Message-ID: <20130618190817.GC16399@kvack.org>
Date:	Tue, 18 Jun 2013 15:08:17 -0400
From:	Benjamin LaHaise <bcrl@...ck.org>
To:	Octavian Purdila <octavian.purdila@...el.com>
Cc:	Zach Brown <zab@...hat.com>,
	Kent Overstreet <koverstreet@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-aio@...ck.org,
	linux-s390@...r.kernel.org, schwidefsky@...ibm.com,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH v3 next/akpm] aio: convert the ioctx list to radix tree

On Tue, Jun 18, 2013 at 10:05:22PM +0300, Octavian Purdila wrote:
> On Fri, Jun 14, 2013 at 5:20 PM, Octavian Purdila
> <octavian.purdila@...el.com> wrote:
> > I picked up Ben's patch and incorporated Zach's idea and the first
> > results look promising, as expected. I am going to do a full test with
> > the same workload I've used for rbtree and come back with the results
> > and the patch in a day or so.
> >
> 
> Unfortunately, I still see performance degradation for the one ioctx
> case even when using IDR. I am using the same fio benchmark as before.

How much of a regression?

		-ben
-- 
"Thought is the essence of where you are now."
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