From mboxrd@z Thu Jan 1 00:00:00 1970 From: Carlos O'Donell Subject: Re: [parisc-linux] [Testers wanted] New glibc with profiling fixed. Date: Tue, 26 Jul 2005 13:16:27 -0400 Message-ID: <20050726171625.GA9703@systemhalted.org> References: <1122036994.10454.131.camel@thor.tres.org> <20050725000919.GA18659@colo.lackof.org> <1122272788.10644.71.camel@thor.tres.org> <20050726132402.GA32722@colo.lackof.org> <1122385036.10644.146.camel@thor.tres.org> <20050726141837.GB6663@parcelfarce.linux.theplanet.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Tres Melton , parisc-linux@lists.parisc-linux.org To: Matthew Wilcox Return-Path: In-Reply-To: <20050726141837.GB6663@parcelfarce.linux.theplanet.co.uk> List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: parisc-linux-bounces@lists.parisc-linux.org On Tue, Jul 26, 2005 at 03:18:37PM +0100, Matthew Wilcox wrote: > On Tue, Jul 26, 2005 at 07:37:16AM -0600, Tres Melton wrote: > > I'm advocating a way for user space to *know* what the kernel is > > running. It is this thinking crap that is messing things up. > > User space should not "know" what HZ the kernel is using. Instead, all > interfaces should be properly reported in terms of whatever HZ userspace > used to assume (100 on i386, other values on other platforms). I don't > know what interface gprof is using, but it needs to be fixed. > > Otherwise we stand no chance of going to a dynamic HZ in the future. Or better yet a precise time interface with feedback about the accuracy of the returned time. For example, while cr16 on parisc is a very precise measurement of insn execution speed, it varies too much to be used for a stable and accurate global clock. c. _______________________________________________ parisc-linux mailing list parisc-linux@lists.parisc-linux.org http://lists.parisc-linux.org/mailman/listinfo/parisc-linux