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Date:      Mon, 14 Apr 97 11:10:41 EDT
From:      Gregory_D_Moncreaff@ccmail.res.ray.com
To:        gurney_j@resnet.uoregon.edu, Michael Smith <msmith@atrad.adelaide.edu.au>
Cc:        msmith@atrad.adelaide.edu.au, freebsd-hackers@freebsd.org
Subject:   Re[2]: dropped packet on de0
Message-ID:  <9703148610.AA861044057@ccmail.res.ray.com>

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     on 2.1.0 ping -l loses most of its packets when the socketbuffer 
       gets filled up.


______________________________ Reply Separator _________________________________
Subject: Re: dropped packet on de0
Author:  Michael Smith <msmith@atrad.adelaide.edu.au> at SMTP
Date:    4/12/97 12:02 AM


John-Mark Gurney stands accused of saying:
> Michael Smith scribbled this message on Apr 11:
> > 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.
> 
> not acording to the man page:
>      -f      Flood ping.  Outputs packets as fast as they come back or one 
>              hundred times per second, whichever is more.  For every
     
Sorry, right answer on my part, but wrong logic.  Ping -f waits for an 
answer to each packet before it sends the next one, to a maximum of 
10ms, so it will never fill the output queue.  Ping -l on the other 
hand just sends like crazy.
     
>   John-Mark
     
-- 
]] 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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