RE: Bandwidth Throttling

Interesting, look into PMTUD (Path MTU Discovery) and set your mtu
correctly. Mtu will be set on your border device. PMTUD understanding is a
great addition to the soup...If for nothing else...

--eddie

-----Original Message-----
From: aklug-bounce@aklug.org [mailto:aklug-bounce@aklug.org] On Behalf Of
Kevin Miller
Sent: Tuesday, January 09, 2007 7:44 AM
To: aklug@aklug.org
Subject: RE: Bandwidth Throttling

Royce Williams wrote:
> Kevin Miller wrote, on 1/5/2007 12:20 PM:
>> I'm with you. They also seem to throttle news groups. I can go to a
>> web page and pull it up pretty quickly, but sometimes have to wait
>> for 10 or 15 seconds or more for a 10 line text usenet post to come
>> in. Sometimes (very rarely) it'll be almost instantaneous but most of
>> the time it's a pig.
>=20
> There's no per-user or per-connection newsgroup throttling that I'm
>aware of, but I don't manage our news server, so I can't speak
>definitively to that.

I asked tech support about it once, but didn't get anywhere. They told me
to change the MTU to 1460. I tried to set that on my WAP but couldn't find
a clear way to do so, but in poking around it looked like it negociated to
1492 or something like that. But I don't think it's the packet size. If I
go to the Novell/SuSE newsgroups (different
server) I get instantaneous results.

Someone else mentioned that ACS is running their own server and caching from
upstream. I presume they're doing a sort of reverse proxy - that would
explain the symptoms. Sometimes a message will come in really fast, other
times (most times) it's slow. I suspect that when they do come in fast that
it is a cached result, and the rest have to wait for the upstream server. I
do get a message now and again that says "Error:
timeout waiting for upstream server".

The groups I watch are woodworking related - probably not a whole lot of
demand on them. I'm sure if I was looking at pron like any normal
red-blooded pervert I'd get much better service. ;-)

..Kevin
--=20
Kevin Miller Registered Linux User No: 307357
CBJ MIS Dept. Network Systems Admin., Mail Admin.
155 South Seward Street ph: (907) 586-0242
Juneau, Alaska 99801 fax: (907 586-4500
---------
To unsubscribe, send email to <aklug-request@aklug.org> with 'unsubscribe'
in the message body.

---------
To unsubscribe, send email to <aklug-request@aklug.org>
with 'unsubscribe' in the message body.
Received on Tue Jan 9 10:53:16 2007