From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Chen, Kenneth W" Date: Tue, 25 Jan 2005 19:44:34 +0000 Subject: RE: optimize __gp location Message-Id: <200501251944.j0PJiZg17310@unix-os.sc.intel.com> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org >>>>> On Mon, 24 Jan 2005 08:51:17 +0100, Christian Hildner said: Christian> Did you have benchmarks? Or at least a comparison of the Christian> resulting code size. The code size should shrink when Christian> more items can be addressed directly. Furthermore the Christian> code size should be a good indicator for the performance Christian> gain you could achive. David Mosberger wrote on Monday, January 24, 2005 9:53 AM > I'm curious about this too. Ken, do you have a real-world benchmark > where improved GP-relative addressability actually made a significant > difference? I don't have any benchmark result off hand. But digging through recent data, for a well known db benchmark, GOT table access account to about 4% of total memory latency in the kernel. - Ken