Date: Fri, 9 Feb 1996 16:19:14 +1030 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: koshy@india.hp.com (A JOSEPH KOSHY) Cc: hackers@FreeBSD.ORG Subject: Re: tcpdump / kernel dropping packets Message-ID: <199602090549.QAA20785@genesis.atrad.adelaide.edu.au> In-Reply-To: <199602090427.AA168780028@fakir.india.hp.com> from "A JOSEPH KOSHY" at Feb 9, 96 09:57:06 am
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A JOSEPH KOSHY stands accused of saying: > > I was testing my network driver and found that `tcpdump' was experiencing > a very high packet drop rate. > > If I run "tcpdump" without the "-n" option, I find (a) the output on > screen is `bursty' with long periods of silence (b) at the end of the run > tcpdump reports typically 90% of the packets "dropped by kernel". Your nameserver is not good. > I'd like to know if this behaviour is normal or whether there is something > wrong with my network setup (read: my driver :)). I can watch pretty busy networks (eg. campus backbone with >500 nodes) with an NE2000-klone without any great problems. (Obviously with '-n') Is the machine doing anything else? 8M and IDE make a very poor combination if the system has to go near the disk. > Koshy -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] "wherever you go, there you are" - Buckaroo Banzai [[
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