Date: Wed, 03 Jan 2007 10:55:16 -0500 From: =?ISO-8859-1?Q?Sten_Daniel_S=F8rsdal?= <lists@wm-access.no> To: Ensel Sharon <user@dhp.com> Cc: freebsd-ipfw@freebsd.org Subject: Re: Do we still care about HZ=1000 with dummynet ? Message-ID: <459BD1E4.1020201@wm-access.no> In-Reply-To: <Pine.LNX.4.21.0701011218080.21120-100000@shell.dhp.com> References: <Pine.LNX.4.21.0701011218080.21120-100000@shell.dhp.com>
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Ensel Sharon wrote: > I see in the dummynet man page: >=20 > Generally, the following options are required: >=20 > options IPFIREWALL > options DUMMYNET > options HZ=3D1000 # strongly recommended >=20 > But all of the NOTES and other documentation only mention setting the H= Z > value in conjunction with DEVICE_POLLING. >=20 > The man page for dummynet is dated October 2002. >=20 > So the question is: circa 6.1, does it matter anymore to set an HZ valu= e > if you aren't using DEVICE_POLLING ? >=20 > If so, why ? I understand the benefit when used with DEVICE_POLLING, b= ut > not for dummynet ... Every HZ (or divisor?) the dummynet pipes/queues are reprocessed and recalculated to see whether a packet should leave the dummynet pipes/queu= es. --=20 Sten Daniel S=F8rsdal
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