From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hyochang Nam Subject: [Question] SMP for TCP/IP Stack Date: Wed, 25 Sep 2002 11:27:31 +0900 Sender: netdev-bounce@oss.sgi.com Message-ID: <20020925112731.A19934@toad.postech.ac.kr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: To: netdev@oss.sgi.com Content-Disposition: inline Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org Can Linux Kernel 2.4.X handle two IP Packets at the same time in a SMP machine which has two CPUs? I have a SMP machine which equips two Intel Xeon CPUs and two Intel Gigabit Network Cards. When I sent small IP Packets to the machine, most of packets are dropped. When I watch CPU utlization with TOP program, only one CPU shows high value but the other shows much low value, ie. 10% CPU utlization. My test shows current IP Stack in Linux Kernel cannot provide SMP Processing properly. But, some articles said Linux Kernel 2.4 gives true SMP processing. What do you think my problem is? Best regards, Hyochang Nam