From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Chen, Kenneth W" Date: Fri, 13 Oct 2006 17:01:33 +0000 Subject: [patch 0/2] remove per-cpu dtr requirement Message-Id: <000001c6eee9$3d10ce20$ff0da8c0@amr.corp.intel.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Christoph's variable kernel page size support patch reminds me this 10 month old patch: http://marc.theaimsgroup.com/?l=linux-ia64&m4074826111970&w=2 I strongly believe it is stable enough for 2.6.19. Reposted here for mainline consideration. ---- Patch set that remove pinned DTR per-cpu TLB requirement. Instead we use DTC to map that translation. With these two patches, we measured substantial performance gain on a database benchmark, in the vicinity of 1.6%. I've also done extensive performance measurement on two other industry standard benchmarks (cpu, java), and have found to have small gain on those workloads. Detail description in the follow on patches. - Ken