From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Friesen Subject: Re: RFC: NAPI packet weighting patch Date: Tue, 21 Jun 2005 22:44:16 -0600 Message-ID: <42B8ECA0.5060904@nortel.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: Andi Kleen , Rick Jones , netdev@oss.sgi.com, davem@redhat.com Return-path: To: Donald Becker In-Reply-To: Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Donald Becker wrote: > On Wed, 22 Jun 2005, Andi Kleen wrote: > > >>>While much has changed since then, the same basic parameters remain >>> - cache line size >> >>In 96 we had 32 byte cache lines. These days 64-128 are common, >>with some 256 byte cache line systems around. > > > Good point. > I believe that the most common line size is 64 bytes for L1 cache. If I recall, G4 chips are 32 bytes, and G5s are 128 bytes. Most current x86 chips are 64 bytes though. Chris