Any updates on this ? I saw that this didn't hold up the next Infinispan
release...
On 6/12/13 10:54 AM, Radim Vansa wrote:
Hi,
I was going through the commits (running tests on each of them) to seek the performance
regression we've recently discovered and it seems that our test (replicated udp
non-transactional stress test on 4 nodes) experiences a serious regression on the commit
ISPN-2848 Use the new bundling mechanism from JGroups 3.3.0
(73da108cdcf9db4f3edbcd6dbda6938d6e45d148)
The performance drops from about 7800 writes/s to 4800 writes/s, and from 1.5M reads/s to
1.2M reads/s (having slower reads in replicated mode is really odd).
It seems that the bundler is not really as good as we hoped for - it may be the
bottleneck. I have tried to create another bundler which shares the queue between 4
instances of TransportQueueBundler (so, 4 threads are actually sending the messages which
go into one queue) and the performance mildly improved - to 5200 writes/s, but that's
not enough.
Radim
Note: you may have seen my conversation with Pedro Ruivo on IRC about the bundler several
days ago, in that time our configuration had old bundler. This was fixed, but as I have
not built Infinispan properly (something got cached), I have not noticed the regression
between these builds.
-----------------------------------------------------------
Radim Vansa
Quality Assurance Engineer
JBoss Datagrid
tel. +420532294559 ext. 62559
Red Hat Czech, s.r.o.
Brno, Purkyňova 99/71, PSČ 612 45
Czech Republic
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