[CentOS] [OT] Memory Models and Multi/Virtual-Cores -- WAS: 4.0 -> 4.1 update failing

[Bryan J. Smith]

On Sat, 2005-06-25 at 18:09 -0400, Peter Arremann wrote:
> Heavy network IO for a webserver is a 100mbit link. 
> Heavy network IO for a database server is a trunked gigabit link or something 
> proprietary like a firelink. 
> Heavy disk IO is 4 to 8 fibre links to an EMC or netapp. 
> I was simply using IPM as an example because it runs on exactly the kind of 
> hardware we've been talking about - dual/quad opterons... v40z to be exact. 

I was just saying that "Heavy [network] IO" from a performance
standpoint of optimally leveraging Opteron NUMA/HyperTransport (or most
RISC/UNIX platforms) versus just your typical, desktop PC-focused (just
wider) Xeon MCH interconnect is rarely done with web apps.

Case-in-point:  I've seen far too many consultants used to designing web
servers install a piss-poor network fileserver or LAN application
server.  And when I've challenged them or their clients on this, they
have absolutely no idea what I'm talking about.  It's only when I put my
money where my mouth's at with a minimal investment and minor system
change that they realize what I'm talking about.


-- 
Bryan J. Smith                                     b.j.smith at ieee.org 
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