From: Nuutti Kotivuori <naked@iki.fi>
To: user-mode-linux-devel@lists.sourceforge.net
Subject: [uml-devel] Re: tun/tap network throughput problem
Date: Tue, 08 Mar 2005 13:27:24 +0200 [thread overview]
Message-ID: <87psya4btv.fsf@aka.i.naked.iki.fi> (raw)
In-Reply-To: 3524bf1f05030712562d547e1c@mail.gmail.com
Young Koh wrote:
> i found other postings discussing queues of tun/tap devices when
> packets are coming to UML kernel and between two UML machines. but i
> couldn't find posting about packets from UML to other machine, even
> though they are all related, it looks.
>
> anybody has any idea where packets are being dropped and how i can
> solve it?
Remember to check the packet drop readings from inside the UML kernel
as well as on all interfaces on the host side.
Since you are sending large packets, I would suggest making sure that
all involved interfaces have large enough txqueues.
You can monitor queue buildup by:
watch -n1 tc -d -s qdisc show
There should be no places for silent drops in the packet handling
things - go around and try to find where the packets are dropping (or
being queued forever).
-- Naked
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next prev parent reply other threads:[~2005-03-08 11:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-07 20:56 [uml-devel] tun/tap network throughput problem Young Koh
2005-03-08 11:27 ` Nuutti Kotivuori [this message]
2005-03-08 16:42 ` [uml-devel] " Young Koh
2005-03-08 17:46 ` Nuutti Kotivuori
2005-03-08 18:51 ` Young Koh
2005-03-09 9:25 ` Nuutti Kotivuori
2005-03-09 11:48 ` Nuutti Kotivuori
2005-03-10 17:39 ` Rob Landley
2005-03-09 19:29 ` [uml-devel] " Blaisorblade
2005-03-09 21:46 ` Young Koh
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