machine naming [was: Re: [tech] morwong NFS speed problem]

[James Andrewartha]

On Tue, 12 Jul 2005, Alastair Irvine wrote:

> On Tue, 12 July, 2005 at 08:12:30PM +0800, James Andrewartha wrote:
>> On Tue, 12 Jul 2005, Alastair Irvine wrote:
>>> I noticed that /home read and write speeds on morwong are pretty crap
>>> compared to mussel.  Any ideas?
>>
>> Yes, it's set to half-duplex. A quick investigation shows that's so, and
>> forcing it to full duplex gives performance equivalent to mussel.
>
> Would this be "SIMPLEX" mentioned below?
>
>  % ifconfig -a
>  ...
>  tu2: flags=200c63<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST,SIMPLEX,MULTINET>

RTFM

   SIMPLEX
       The interface cannot hear its own transmissions.  This is a read-only
       option that is set by the driver.

>> Not that you can use it for long, as we're about to shut it down and move
>> it to a dual 833mhz alpha with 2GiB of ram.
>
> I assume that the hard disk(s) containing the OS are being moved over?

Yes.

> It seems that this would violate the host naming recommendations (I forget
> the RFC number).  What is the case for doing this instead of commissioning
> the abovementioned machine with a new name and a fresh OSF/1 install?

morwong currently is a working install, and transferring the disks over is 
much less pain than reinstalling, as it has been customised quite a bit. I 
see no reason to duplicate this effort merely to conform to some RFC that 
you can't even remember the number of (google anyone?) and which is 
informational at best, therefore has no bearing on how UCC operates.

> PS -- Assuming the move goes ahead, shouldn't there be a message to
>      ucc-announce (or maybe ucc)?

Not really, there was discussion on ucc already about how tonight would be 
the continuation of the hardware night, and that morwong would be moved 
over during the proceeding.

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