<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">Not the way the RPCDispatcher in JGroups works. I always pass in a List of buddies, and usually this list would have 1 element (if n=1). Either way, even if n=3 in a 500 node cluster the multicast is inefficient.<DIV><BR class="khtml-block-placeholder"></DIV><DIV>(moving this to the JBC dev list)<BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV>--</DIV><DIV>Manik Surtani</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Lead, JBoss Cache</DIV><DIV>JBoss, a division of Red Hat</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Email: <A href="mailto:manik@jboss.org">manik@jboss.org</A></DIV><DIV>Telephone: +44 7786 702 706</DIV><DIV>MSN: <A href="mailto:manik@surtani.org">manik@surtani.org</A></DIV><DIV>Yahoo/AIM/Skype: maniksurtani</DIV></SPAN></SPAN><BR class="Apple-interchange-newline"></SPAN> </DIV><BR><DIV><DIV>On 5 Oct 2006, at 11:58, Ben Wang wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"> <DIV dir="ltr" align="left"><SPAN class="481135610-05102006"><FONT face="Arial" color="#0000ff" size="2">I thought for BR, we do unicast now when there is only one buddy (the default) and switch to multicast where is more than one?</FONT></SPAN></DIV><BR> <DIV class="OutlookMessageHeader" lang="en-us" dir="ltr" align="left"> <HR tabindex="-1"> <FONT face="Tahoma" size="2"><B>From:</B> Bela Ban <BR><B>Sent:</B> Thursday, October 05, 2006 2:53 PM<BR><B>To:</B> Ben Wang; Brian Stansberry; Manik Surtani; Vladimir Blagojevic; Galder Zamarreno<BR><B>Subject:</B> Anycast<BR></FONT><BR></DIV> <DIV></DIV>FYI,<BR><BR>currently, buddy replication generates the *same* amount of traffic as multicasting to everyone. I created a JIRA issue, anycast, which when implemented will allow for sending of messages to a subset of the membership: <A class="moz-txt-link-freetext" href="http://jira.jboss.com/jira/browse/JGRP-338">http://jira.jboss.com/jira/browse/JGRP-338</A><BR><PRE class="moz-signature" cols="60">--
Bela Ban
Lead JGroups / Manager JBoss Clustering Group
JBoss - a division of Red Hat
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