Michael,
This is currently BEA's top priority fix over all others. I know of no
documentation except a voluminous amount on the private engineering db
internal to BEA. It is a problem on all platforms but does not noticeably
manifest itself except on windows. The reason is weblogic uses multicast for
messaging in the cluster. Windows has a VERY small multicast buffer size.
Other platforms allow you to change the size of the multicast buffer and
alleviate communication problems.
So one, BEA screwed up using multicast for messaging large amounts of data
in a cluster. Other products like Gemstone have a much more mature cluster
technology and do not need to message to stay in synch.
Two, they are sychronizing much more data than they need to, up to 14meg has
been measured. Talk about performance downer...that will kill a CPU when you
have 4 plus instances all trying to talk at the same time.
Mica
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Micheal J
Sent: Friday, March 30, 2001 12:18 PM
To: [EMAIL PROTECTED]
Subject: RE: [JBoss-user] I need ammo. -WL SUX
Windows 2000 scales just fine Fillip. Certainly the 32-CPU Windows 2000
Datancentre boxes represent much more _vertical_ scalability than 90% or
more of businesses need or want I imagine. As for _horizontal_ scalability
you can scale till the cows...
More seriously, I am curious though about this problem with clustering and
why it only applies to Windows. If WebLogic admitted there was a problem
perhaps there is a link to some online description/notice?
Micheal
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Filip Hanik
> Sent: 30 March 2001 18:39
> To: [EMAIL PROTECTED]
> Subject: RE: [JBoss-user] I need ammo. -WL SUX
>
>
> > We've been trying to get an install of Weblogic51 up and running for 4
> > months! BEA has as of yet been unable to get it run either. They finally
> > admitted that they have a SERIOUS problem with windows and clustering.
>
> two thinks to consider, JBoss doesn't offer clustering yet. So
> the statement
> is no good.
> Also, why not cluster on Unix boxes, since you want scalability,
> Windows is
> not going to offer it anyway :)
>
> :)
>
> ~
> Namaste - I bow to the divine in you
> ~
> Filip Hanik
> Software Architect
> [EMAIL PROTECTED]
> www.filip.net
>
>
>
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