Date: Thu, 21 Oct 2004 20:36:01 +0400 From: "Lenar D. Tukhvatullin" <blackv@netroad.ru> To: "William D. Colburn (aka Schlake)" <wcolburn@nmt.edu> Cc: freebsd-net@freebsd.org Subject: Re: 9 second ping lag unless I run tcpdump on RELENG_5 Message-ID: <20041021163601.GA88117@proxy.netroad.ru> In-Reply-To: <20041021145654.GA19657@nmt.edu> References: <20041021145654.GA19657@nmt.edu>
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On Thu, Oct 21, 2004 at 08:56:54AM -0600, William D. Colburn (aka Schlake) wrote: > I have a RELENG_5 box on my desk. Unless I run the tcpdump program, it > responds progressively slower on the network. This seemed like the most > appropriate list to post this question too. > > This morning, for instance, it had a 9 second ping response time from a > machine on the same network segment as it when I came into work. As > soon as I typed 'tcpdump' on the freebsd box the ping time dropped to > nearly instantaneous. I killed tcpdump and let it run for a while. > About a thousand seconds later it suddenly jumped to 1 second, then to 2 > seconds. As soon as I ran tcpdump again it dropped back to normal. > > The uname ids it as 5.3-STABLE #14: Wed Oct 20 10:23:11 UTC 2004, > with a GENERIC kernel. I did a new cvsup (along with a tcpdump because > otherwise cvsup fails) this morning and nothing new came across. tcpdump (by default) puts interface into promiscuous mode. (or you can set this mode by hand: ifconfig <interface> promisc) Maybe your ethernet card broken? Try to replace it. -- Lenar D. Tukhvatullin
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