Date: Mon, 20 Dec 2010 20:53:27 +0300 From: Lev Serebryakov <lev@serebryakov.spb.ru> To: freebsd-net@FreeBSD.org Subject: E4500 spend one core to saturate 1Gbit/s link with TCP -- is it nornal? Message-ID: <12810339411.20101220205327@serebryakov.spb.ru>
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Hello, Freebsd-net. I have file server with Core2Duo E4500 CPU and Intel gigabit adapter (82566DM). FreeBSD 8-STABLE (8.2-PRERELEASE #1: Fri Dec 3 2010) and samba35-3.5.6 are installed. This server could serve about 110MiB/s to one client over CIFS, but one core of CPU is completely busy in such situation: about 60% of CPU is occuped by "ketnel" and 35-40% occuped bu "smbd" accroding to "top -S" ouput. Is it normal, that 2.2GHz core is needed to saturate 1Gib link with only one client (and one TCP connction), or I have something misconfigured? --=20 // Black Lion AKA Lev Serebryakov <lev@serebryakov.spb.ru>
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