From: Stef Coene <stef.coene@docum.org>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Upload rate also down
Date: Mon, 20 May 2002 13:19:56 +0000 [thread overview]
Message-ID: <marc-lartc-102190083600961@msgid-missing> (raw)
In-Reply-To: <marc-lartc-102189867531624@msgid-missing>
> without qdisc 100mbit LAN (Sis900 AMD Duron 850 128RAM)-server
> Realtek 8139 PIII-450 192RAN-client
> I try ftp and ssh(scp)
> upload ~7.5Mbyte/s
> download ~8.5Mbyte/s
>
> with tbf
> tc qdisc add dev eth0 root tbf rate 1mbit burst 10k latency 50ms
And where do you execute that command? On the server?
> download ~124kbyte/s
> upload ~1500kbyte/s Why !!! (I try htb - the same problem)
You ceil the download to 1Mbit ( = 125 kbyte/s) and use all that bandwidth to
download. But when you upload at the same time, there are also packets going
in the download direction (confirmation packets and others). But your
download is full, so they can't get thru. That's why upload is also slow and
that's why you have to shape in both directions.
Or be clever, and give more bandwidth in the download direction for the
packets needed for upload
Stef
--
stef.coene@docum.org
"Using Linux as bandwidth manager"
http://www.docum.org/
#lartc @ irc.openprojects.net
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next prev parent reply other threads:[~2002-05-20 13:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-20 12:37 [LARTC] Upload rate also down Alexey Talikov
2002-05-20 13:19 ` Stef Coene [this message]
2002-05-20 15:09 ` Alexey Talikov
2002-05-20 15:48 ` Alexey Talikov
2002-05-21 7:34 ` Alexey Talikov
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