Regarding ISPN-1786, I'd like to work with Sanne/Mircea on trying out
the new UNICAST2. In my local tests, I got a 15% speedup, but this is
JGroups only, so I'm not sure how big the impact would be on Infinispan.
If we see a big speedup, UNICAST2 and NAKACK2 could then be backported
to a 3.0.4, and added to 5.1.1.
However, I want to spend some time on testing UNICAST2, so this won't be
available tomorrow...
On 1/26/12 11:42 PM, Manik Surtani wrote:
I really didn't want to do this, but it looks like a 5.1.1 will
be necessary. The biggest (critical, IMO, for 5.1.1) issues I see are:
1.
https://issues.jboss.org/browse/ISPN-1786 - I presume this has to do with a bug Mircea
spotted that virtual nodes were not being enabled by the config parser. Which meant that
even in the case of tests enabling virtual nodes, we still saw uneven distribution and
hence poor performance (well spotted, Mircea).
2. Related to 1, I don't think there is a JIRA for this yet, to change the default
number of virtual nodes from 1 to 100 or so. After we profile and analyse the impact of
enabling this by default. I'm particularly concerned about (a) memory footprint and
(b) effects on Hot Rod relaying topology information back to clients. Maybe 10 is a more
sane default as a result.
3.
https://issues.jboss.org/browse/ISPN-1788 - config parser out of sync with XSD!
4.
https://issues.jboss.org/browse/ISPN-1798 - forceReturnValues parameter in the
RemoteCacheManager.getCache() method is ignored!
In addition, we may as well have these "nice to have's" in as well:
https://issues.jboss.org/browse/ISPN-1787
https://issues.jboss.org/browse/ISPN-1793
https://issues.jboss.org/browse/ISPN-1795
https://issues.jboss.org/browse/ISPN-1789
https://issues.jboss.org/browse/ISPN-1784
What do you think? Anything else you feel that is crucial for a 5.1.1? I'd like to
do this sooner rather than later, so we can still focus on 5.2.0. So please respond
asap.
Paul, I'd also like your thoughts on this from an AS7 perspective.
Cheers
Manik
--
Manik Surtani
manik(a)jboss.org
twitter.com/maniksurtani
Lead, Infinispan
http://www.infinispan.org
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Bela Ban
Lead JGroups (
http://www.jgroups.org)
JBoss / Red Hat