SV: Dummynet

Jon Otterholm jon.otterholm at ide.resurscentrum.se
Tue Sep 21 14:02:48 UTC 2010


Hi Vadim!

> -----Ursprungligt meddelande-----
> Från: owner-freebsd-stable at freebsd.org [mailto:owner-freebsd-
> stable at freebsd.org] För Vadim Goncharov
> Skickat: den 21 september 2010 14:48
> Till: freebsd-stable at freebsd.org
> Ämne: Re: Dummynet
> 
> Hi Jon Otterholm!
> 
> On Mon, 20 Sep 2010 10:00:48 +0200; Jon Otterholm wrote about
> 'Dummynet':
> 
> > Installed a new router running 8-stable and encounter some problems
> > when configuring dummynet pipes:
> 
> > When setting buckets above 1024...
> > ipfw pipe 91 config bw 100Mbit/s mask src-ip 0xffffffff buckets 4096
> 
> > ...I get the following error:
> > Clamp sched buckets to 1024 (was 4096)
> 
> Try to write "buckets 4096" before "mask", though this is unlikely to help,
> there are some troubles with 8.1's changes in parser.

Didn't help. 

> 
> > # sysctl net.inet.ip.dummynet.hash_size
> > net.inet.ip.dummynet.hash_size: 4096
> 
> Also, make sure you're doing this before any packets actually went to
> dummynet (e.g. just after reboot).

This is set in /etc/sysctl.conf ...

> 
> > from man ipfw:
> >     buckets hash-table-size
> >           Specifies the size of the hash table used for storing the
> > various
> >           queues.  Default value is 64 controlled by the sysctl(8)
> > variable
> >           net.inet.ip.dummynet.hash_size, allowed range is 16 to 65536.
> 
> > Am I missing something here? This worked fine in the 7-branch.
> 
> The reason is that luigi@ merged ipfw3 from -CURRENT between 8.0R and
> 8.1R.
> There are many new features and, as seen from many PRs, many new bugs.

OK. I just have to wait then for luigi@ to submit fixes.

Thanks for the tips and info.

Should I expect and be prepared for any other flaws from the current version of dummynet in 8-STABLE?

//JO


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