Date: Fri, 26 Jun 2009 19:49:06 +0000 (UTC) From: Oleg Bulyzhin <oleg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r195075 - head/sbin/ipfw Message-ID: <200906261949.n5QJn6XW096929@svn.freebsd.org>
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Author: oleg Date: Fri Jun 26 19:49:06 2009 New Revision: 195075 URL: http://svn.freebsd.org/changeset/base/195075 Log: - 'burst' description rewritten. Submitted by: Ben Kaduk Approved by: re (kib) Modified: head/sbin/ipfw/ipfw.8 Modified: head/sbin/ipfw/ipfw.8 ============================================================================== --- head/sbin/ipfw/ipfw.8 Fri Jun 26 19:39:33 2009 (r195074) +++ head/sbin/ipfw/ipfw.8 Fri Jun 26 19:49:06 2009 (r195075) @@ -1944,13 +1944,18 @@ the granularity to 1ms or less). The default value is 0, meaning no delay. .Pp .It Cm burst Ar size -If the data rate exceeds the pipe bandwith limit -(and pipe was idle long enough), +If the data to be sent exceeds the pipe's bandwidth limit +(and the pipe was previously idle), up to .Ar size -bytes of data is allowed to bypass the +bytes of data are allowed to bypass the .Nm dummynet -scheduler (i.e. it will be sent without shaping), then transmission rate -will not exceed pipe bandwidth. Effective burst size calculated as follows: +scheduler, and will be sent as fast as the physical link allows. +Any additional data will be transmitted at the rate specified +by the +.Nm pipe +bandwidth. +The burst size depends on how long the pipe has been idle; +the effective burst size is calculated as follows: MAX( .Ar size ,
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