Date: Fri, 12 Aug 2005 13:51:09 +0300 From: Volodya Pelekh <vpeleh@mail.lviv.ua> To: Chuck Swiger <cswiger@mac.com> Cc: freebsd-ipfw@freebsd.org Subject: Re[2]: Problem with dummynet Message-ID: <1961417412.20050812135109@mail.lviv.ua> In-Reply-To: <42FB83E1.5020706@mac.com> References: <1591062177.20050811190036@mail.lviv.ua> <42FB7A5A.5060802@mac.com> <875355983.20050811194820@mail.lviv.ua> <42FB83E1.5020706@mac.com>
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Thanks
When i set HZ=1000, delay stay normal, i try this on may
test computer, but i think it will be working and on server
Thank you
Thursday, August 11, 2005, 7:59:13 PM, You wrote:
> Volodya Pelekh wrote:
>> Yes it set at default value
>> sysctl kern.clockrate
>> kern.clockrate: { hz = 100, tick = 10000, profhz = 1024, stathz = 128 }
>>
>> but in freebsd 4.5, 5.3 in my network this set in HZ 100 too, and i
>> have not this problem on those computers
> How much of a difference changing HZ makes may depend on a lot of things such
> as whether you are using device polling, etc, but if you care about reducing
> the latency observed by network stats to below 10 ms, adding:
> kern.hz="1000"
> ...to /boot/loader.conf and rebooting is definitely worth the try. As the
> manpage for dummynet itself says:
> Generally, the following options are required:
> options IPFIREWALL
> options DUMMYNET
> options HZ=1000 # strongly recommended
> Additionally, one may want to increase the number of mbuf clusters (used
> to store network packets) according to the sum of the bandwidth-delay
> products and queue sizes of all configured pipes.
> Also, you ought to upgrade that 4.5 system to 4.11 if you can, there are some
> significant security issues which have been issued between the two, BTW.
----------------------------------------------------------------------
UARNet
Volodymyr Pelekh Tel: +38 0322 97 91 16
E-mail mailto:vpeleh@mail.lviv.ua
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