From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hyochang Nam Subject: [Question] SMP for Linux Date: Thu, 17 Oct 2002 11:29:28 +0900 Sender: netdev-bounce@oss.sgi.com Message-ID: <20021017112928.B20854@toad.postech.ac.kr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@oss.sgi.com Return-path: To: niv@us.ibm.com Content-Disposition: inline Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Many people helped me to solve the interrupt distribution problem. We tested the throughput of Layer 3 forwarding on a SMP machine which equips two Zero proessor(2Ghz). This is our results: ------------------------- SMP | No SMP ------------------------- 230 Mbps | 330 Mbps ------------------------- We use RedHat Linux 8.0 (which uses Linux Kernel 2.4.18-14) and two intel Pro1000 Server Adopters. In the table, SMP means we use the kernel builted for SMP Machine, and "No SMP" means the kernel builted for single CPU mode. I expected that the SMP might show better throughput than "NO SMP" environments. But, contrary to my expectation, SMP showed poor results. I don't know what is my fault in the experiments. - Hyochang Nam