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Date: Tue, 18 Jun 2013 15:08:17 -0400
From: Benjamin LaHaise <bcrl@kvack.org>
Subject: Re: [PATCH v3 next/akpm] aio: convert the ioctx list to radix tree
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References: <1366026055-28604-1-git-send-email-octavian.purdila@intel.com> <20130612181440.GC6151@google.com> <20130612182430.GE14404@kvack.org> <20130612194005.GC8389@lenny.home.zabbo.net> <CAE1zotJuQkxqJhV32nAMb-gq3gGzNaL882J4tGoMvj38TMDYMA@mail.gmail.com> <CAE1zotLsK47ni8-Dky6fyqZmeN3zGqKvcne9HDQbUwDi4Cia_Q@mail.gmail.com>
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To: Octavian Purdila <octavian.purdila@intel.com>
Cc: Zach Brown <zab@redhat.com>, Kent Overstreet <koverstreet@google.com>, Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org, linux-aio@kvack.org, linux-s390@vger.kernel.org, schwidefsky@de.ibm.com, "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>, Andi Kleen <ak@linux.intel.com>
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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@intel.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."