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From: "Bird, Timothy" <Tim.Bird@am.sony.com>
Date: Fri, 21 Oct 2016 19:44:19 +0000
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Subject: [Fuego] ssh timeout problem - was RE: [LTSI-dev] Fuego installation
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To: "Bird, Timothy" <Tim.Bird@am.sony.com>, anirudh vasudevan <vasuanirudh@gmail.com>, Daniel Sangorrin <daniel.sangorrin@toshiba.co.jp>
Cc: "ltsi-dev@lists.linuxfoundation.org" <ltsi-dev@lists.linuxfoundation.org>, "fuego@lists.linuxfoundation.org" <fuego@lists.linuxfoundation.org>



> -----Original Message-----
> From: ltsi-dev-bounces@lists.linuxfoundation.org [mailto:ltsi-dev-
> bounces@lists.linuxfoundation.org] On Behalf Of Bird, Timothy
> Sent: Friday, October 21, 2016 12:10 PM
> To: anirudh vasudevan <vasuanirudh@gmail.com>
> Cc: ltsi-dev@lists.linuxfoundation.org; fuego@lists.linuxfoundation.org
> Subject: Re: [LTSI-dev] [Fuego] Fuego installation
>=20
>=20
>=20
> > -----Original Message-----
> > From: ltsi-dev-bounces@lists.linuxfoundation.org [mailto:ltsi-dev-
> > bounces@lists.linuxfoundation.org] On Behalf Of anirudh vasudevan
> > Sent: Friday, October 21, 2016 11:52 AM
> > To: Bird, Timothy <Tim.Bird@am.sony.com>
> > Cc: ltsi-dev@lists.linuxfoundation.org; fuego@lists.linuxfoundation.org
> > Subject: Re: [LTSI-dev] [Fuego] Fuego installation
> >
> > Hi Tim,
> >
> >
> > I had already changed the timeout to 45 and ran and found no luck Now I
> > tried changing it to 80 and I was left with the same result.
> >
>=20
> Hmm.  I found a reference on the internet to changing the value of UseDNS
> on the
> target.  Can you do the following:
>=20
> On your target, in the file /etc/ssh/sshd_config, add a line containing:
> UseDNS no
>=20
> Then do: "sudo service ssh restart"
> on the target.
>=20
> Then re-run the test and see if you're still getting the timeout.
>=20
> I'm setting up an environment to test this on my side, but it will take a=
 while.
> (I have to reconstruct my setup from the tech showcase.)
> But if you could try this out real quick and let me know if it helps, tha=
t would
> be useful.

Just to report back.  I am testing a beaglebone black, using it's Ethernet =
connection,
on a private LAN (no connection to an external network for either the host =
or target).

I followed those instructions (setting 'UseDNS no') and the running Functio=
nal.bc
on the board took only 7.7 seconds, as opposed to the 4 minutes and 23 seco=
nds
it was taking before the change.

So, this solves this particular timeout problem for me.  Please let me know=
 if
it solves your timeout problem.

I believe we should have some "health check" tests in the test suite, to ch=
eck
a variety of items relating to the target (/proc filesystem availability, s=
sh
timing test, etc.) and the host/target connection, that would help us ident=
ify
and cure these problems.

Let me know what you think.
 -- Tim