Subject: Re: MP AS4100 hanging
To: Havard Eidnes <he@netbsd.org>
From: Jeff Workman <jworkman@pimpworks.org>
List: port-alpha
Date: 01/02/2003 04:17:55
> I'm running 1.6K.  1.6-stable was far worse for NFS on an MP machine.
> It'd barf at the first sign of NFS activity, with lots of debug messages
> that my feeble brain cannot understand. However, with 1.6K, it just locks
> up hard, requiring a reboot, without any kind of logging or error message.

Also, it might be worth noting that I/O doesn't seem nearly as fast or 
smooth with 4x 300 MHz (2 MB cache) as it did when I was running 1x 400 MHz 
(4 MB cache)

I just FTP'd a 400 MB file from the Alpha to a 800 MHz P2 running Linux, 
and I'm only getting 2.19 megabyte/second on a 100 mbit fdx link on an 
otherwise idle network. I can't remember what my speeds were with the 
single 400 MHz processor but I'm pretty sure it was considerably faster 
than this.

As a comparison, I FTPd the same file from two other machines on the LAN to 
this same workstation and here's what I got:

133 MHz Pentium/Linux       2.6 megabyte/second
2x200 MHz Ultra 2/Solaris   6.7 megabyte/second

Also, I/O is noticably "choppy" when doing FTP or even untarring a  large 
file locally.  I noticed lots of 1/4 second or so pauses while performing 
either of these operations.  I never had this problem when running a single 
400 MHz processor

-Jeff

--
Jeff Workman | jworkman@pimpworks.org | http://www.pimpworks.org