Date: Mon, 26 Dec 2005 12:15:14 -0600 From: Skylar Thompson <skylar@cs.earlham.edu> To: freebsd-net@freebsd.org Subject: DHCP oddity Message-ID: <43B03332.2010904@cs.earlham.edu>
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While doing some network stress-tests from a dual-CPU x86 FreeBSD 5.4
server, I noticed that a "ping -f" drives dhcpd's CPU usage way up. I
put dhcpd into debug mode and didn't get any error messages. I then ran
dhcpd with strace, and saw loads of these messages when I started the
ping flood:
select(8, [?], [?], [?], NULL) = 1 ()
gettimeofday({...}, NULL) = 0
recvfrom(4, 0xbfbfe090, 1500, 0, {...}, [?]) = 84
select(8, [?], [?], [?], NULL) = 1 ()
gettimeofday({...}, NULL) = 0
recvfrom(4, 0xbfbfe090, 1500, 0, {...}, [?]) = 84
Does anyone know why this would happen?
--
-- Skylar Thompson (skylar@cs.earlham.edu)
-- http://www.cs.earlham.edu/~skylar/
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