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Re: System suffers frequent TLB miss

from [Ralf Baechle] [Permanent Link][Original]
To: "wilbur.chan" <wilbur512@gmail.com>
Subject: Re: System suffers frequent TLB miss
From: Ralf Baechle <ralf@linux-mips.org>
Date: Tue, 5 Apr 2011 14:21:28 +0200
Cc: Linux MIPS Mailing List <linux-mips@linux-mips.org>, "Jayachandran C." <jayachandranc@netlogicmicro.com>
In-reply-to: <BANLkTikpqk-UcFHHD6MGyZgv6LociaETtg@mail.gmail.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <BANLkTikpqk-UcFHHD6MGyZgv6LociaETtg@mail.gmail.com>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mutt/1.5.21 (2010-09-15) 
On Sun, Apr 03, 2011 at 11:49:13AM +0800, wilbur.chan wrote:

> We have a system running on mips64 xlr 732.  Our major application
> process is binded on CPU5,
> 
> In order to reduce the tlb miss of our major process, we took the
> following steps:

What page size are you using?  If you're still using 4K pages, try switching
to 16K or even 64K pages.  You also may want to look into using hugetlbfs.

  Ralf
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