Ok, need to reply to myself:
CBQ borrow does work, even though little strangely.
For the record, here is what happened. Maybe someday will
someone find
this useful:
For the last two hours before I wrote my previous email, I
was running
tens after tens of bandwidth tests, trying to fine-tune the
queue
configuration to find out why 'borrow' refuses to take even
a bit of
free bandwidth, but to no avail. After I got tired of
executing every
possible load and queue combinations without any effect, I
tried to
google out some solution. I stumbled upon a number of
threads discussing
CBQ borrowing issues, with very similiar setups and symptoms
as was this
one.
After I wrote my "me too" email and was about to
tear down the whole
thing, I clicked for the last batch of tests on a nearby
client and was
struck with the results, with borrow clearly visible
working. This was
without any changes to the pf configuration or anything
else.
After that, I'm no longer able to reproduce the problem,
borrow works
pretty well with every *previously tried* combination I can
remember and
I can't force it to break again, even with hard reboots and
wicked
numbers.
The only explanation I have is that something went stuck
previously when
I was building and tuning the whole pf setup and pf flushed
it long
after, as there was about half an hour "cooldown"
after my previous
email, before I get back to shut it down (and found that
everything
already works perfectly). That's all I can guess as I really
don't see
into pf internals.
So, if you run into similiar issues, try to reboot the pf
machine a few
times just to be sure, it won't hurt anything.
m.
On Mon, 2007-08-20 at 15:01 +0200, Michal Varga wrote:
> Guys, can anyone tell me what is the current status of
this problem? -
> http://lists.freebsd.org/pipermail/freebs
d-pf/2007-February/003018.html
>
> I've run into the same issues under FreeBSD 6.2-STABLE:
Mon Aug 20
> 08:44:45 CEST 2007.
>
> Later in the thread, Max Laier wrote:
> "Is there a PR about the CBQ borrow issues? If
not, could you file one?
> I won't get to it shortly."
>
> I did search the PR database and didn't find anything
relevant, so, was
> this issue completely forgotten, or did I miss
something?
>
> Or, at least, if this is somewhat unimportant bug and
not to be fixed,
> does anyone know if the latest pf in -CURRENT behaves
ok with cbq
> borrowing?
>
> regards,
> m.
>
--
Michal Varga <varga stonehenge.sk>
Stonehenge
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