From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Hesterberg Date: Wed, 02 Jun 2004 20:58:26 +0000 Subject: Re: Scalability enhancements for gettimeofday Message-Id: <20040602205826.GB4680@sgi.com> List-Id: References: <200405201205.57930.clameter@sgi.com> In-Reply-To: <200405201205.57930.clameter@sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Wed, Jun 02, 2004 at 10:33:39AM -0700, David Mosberger wrote: > Christoph> Also the fast system call handler for sys_gettimeofday() > Christoph> can only improve scalability if the ITC is the basis for > Christoph> gettimeofday which is also never the case on Altix SN2 > Christoph> systems. > > Does this really make a substantial difference? My guess is no and, > if so, I'd rather not add any more #ifdefs. It also only helps SN2 kernels and not generic kernels. I don't think this is they key part of the patch, so unless we see some compelling performance evidence, I'd agree it seems better to leave out the #ifdef. John