From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3FD8A1A8.2060409@bluewin.ch> Date: Thu, 11 Dec 2003 17:56:08 +0100 From: Wolfgang Grandegger MIME-Version: 1.0 To: Jon Masters Cc: Dan Malek , linuxppc-embedded@lists.linuxppc.org Subject: Re: 405 TLB miss reduction References: <3FBD5348000912F8@mssbzhh-int.msg.bluewin.ch> <3FD75312.7070701@embeddededge.com> <3FD84905.5090802@bluewin.ch> <3FD89FC3.3020301@jonmasters.org> Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: On 12/11/2003 05:48 PM Jon Masters wrote: > > Wolfgang Grandegger wrote: > > | We have been surprised, that CONFIG_PIN_TLB was able to reduce the page > | miss rate already by approx. 40%. We are also working on the > | optimization/tuning of our application and likely there we can gain more > | than by further squeezing the TBL management of the Linux kernel, I agree. > > I noticed a possible improvement in performance however have not yet > done a set of tests to back this up. I saw the huge TLB stuff in > 2.6.0-test11 and nearly fell off my chair - can someone here provide > some reference to read on this so I can be more useful talking about it? I found "Documentation/vm/hugetlbpage.txt" in linuxppc-2.5 from BK. Wolfgang. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/