So you get the 5 minutes down to what?  3-4?

-----Original Message-----
From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of
David Boyes
Sent: Wednesday, June 10, 2009 1:50 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: [LINUX-390] To kick or to clone ... that is the question

> David Boyes wrote:
> >> Are you using NFS to host the install tree?  In some recent tests,
I
> >> noticed a huge improvement installing over NFS when tweaking the
NFS
> >> mount options (rsize, wsize, tcp instead of udp, timeout).
> >
> > This is also one of the few cases where memory-mapping the install
> repository filesystem in XSTORE on the kickstart server is worth
> considering. Speeds up the process enormously at the cost of paging
> space and operations.
> Hmm, interesting..  do you mean creating a DCSS for the install tree?
> That would be blazing fast.

That's one idea (and since that filesystem usually doesn't change all
that often, it'd be a nifty way to share a single copy between multiple
servers -- just treat the DCSS as local disk for installation purposes).
If you have a lot of install/change traffic, that might be really
spiffy. 

I was just experimenting with ramdisks/the xpram driver and copying the
install files from real disk to ramdisk at system startup. Causes lots
and lots of I/O initially, but once the ramdisk is populated and
exported, it's *really really really* fast to do jumpstart installs. 

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