Date: Fri, 11 Apr 1997 11:25:42 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: Gregory_D_Moncreaff@ccmail.res.ray.com Cc: freebsd-hackers@freebsd.org Subject: Re: dropped packet on de0 Message-ID: <199704110155.LAA08171@genesis.atrad.adelaide.edu.au> In-Reply-To: <9703108606.AA860696480@ccmail.res.ray.com> from "Gregory_D_Moncreaff@ccmail.res.ray.com" at "Apr 10, 97 09:31:56 am"
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Gregory_D_Moncreaff@ccmail.res.ray.com stands accused of saying: > I was trying to see if I could make de0 drop packets > > I ran 3 "ping -f"s between different pairs of > nodes on a shared 10Mbit coax ethernet > > xperfmon++ reported ~1500 packets per second, ~700 collisions per > second. > > netstat -d -I didn't report a single drop > > when I used kgdb to watch the send queue, I did not ever see any > accumulation of data > > all this under 2.1.0 (p5-133, smc etherpower combo) > > My question, is it possible to load down the de0 send queue at all, > and if so, under what conditions? ping -f only sends at 100 packets/second; try 'ping -l 100000' to get ping to really push, or use one of the TCP throughput testing programs in the ports collection. -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[
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