Re: [infinispan-dev] Baselining on Java 7
On 5/24/13 6:07 PM, cotton-ben wrote:
/> Besides NIO2 stuff, is there anything from 7 we want badly? /
Yes. In its version 7 release, Java introduces a Socket Direct Protocol
capability. For the first time ever, a Java API can accommodate a direct
bridge to ultra-low-latency physical network providers like Infiniband
(including access to native Infiniband VERBs).
Actually, this should work *without* changes to JGroups or Infinispan
TODAY, if you use JDK 7. According to [1], all you'd have to do is to
use a TCP based configuration, enable SDP sockets instead of TCP sockets
through a system property and provide a config file listing the target
addresses for which SDP sockets shoul be created.
I see that Socket and ServerSocket are already supported, so NIO2 is not
even needed (from an API viewpoint).
I know this is probably a very limited use case for you guys for
right now,
but, Java 7's SDP capability is a game changer. Bela and I have exchanged
musings about this potential to some-time being exposed through the
Infinispan/JGroups API stack(
https://community.jboss.org/message/810754#810754 ). It is something you
guys will definitely want to show case some day (btw, what is a more natural
name marriage than "Infinispan on Infiniband" ?) and with Java 7 SDP
capability you can start building that bridge now.
Unless I'm wrong above, it would be interesting to get some numbers on
running Infinispan/JGroups over Infiniband using SDP sockets. Are you
planning on doing this ?
I'm currently looking at reshuffling and re-prioritizing the JGroups
roadmap, but I don't think JDK 7 will be used in a 4.0 release, possibly
only in a 5.0 release... I'll blog about this shortly.
[1] http://docs.oracle.com/javase/tutorial/sdp/sockets/enable.html
--
Bela Ban, JGroups lead (http://www.jgroups.org)