Re: [infinispan-dev] Query integration tests performance and JGroups
What's that test doing ? Can this be reproduced in JGroups ?
Can you perhaps instrument the JGroups src code in Receiver.run() to
print out the number of bytes read and print the Throwable to stderr ?
Somehow this smells like a tight loop, but I wonder what would cause
this... A closed socket would terminate the loop and reading an EOF
would also terminate it...
On 11/06/14 10:52, Gustavo Fernandes wrote:
Hi,
While investigating some CI failures in query (timeouts), I've narrowed
down the issue to the Jgroups protocol stack being used.
Running a 'mvn clean install' in the query/ module takes about 6min
(when timeout does not happen). If I run instead:
mvn -Dtest.protocol.jgroups=udp clean install
Time goes down to around 50s. Recent changes in core's jgoups-tcp.xml
for the tests were the removal of the loopback=true and the modification
of the bundler_type, but they don't seem to affect the outcome.
FYI, taking a single test and stripping down from it everything but the
cluster formation and data population (5 objects) leads to the cpu
hotspot below, and it takes almost 1 minute
I'd be happy to change the query tests to udp, but first would like to
hear your thoughts about this issue
Gustavo
+----------------------------------------------------------------------------------+------------------+--------------------+
| Name |
Time (ms) | Invocation Count |
+----------------------------------------------------------------------------------+------------------+--------------------+
| +---java.net.SocketInputStream.read(byte[], int, int, int) |
101,742 100 % | 4,564 |
| | |
| |
| +---java.net.SocketInputStream.read(byte[], int, int) |
| |
| | |
| |
| +---java.io.BufferedInputStream.fill() |
| |
| | |
| |
| +---java.io.BufferedInputStream.read() |
| |
| | |
| |
| +---java.io.DataInputStream.readInt() |
| |
| | |
| |
| +---org.jgroups.blocks.TCPConnectionMap$TCPConnection$Receiver.run() |
| |
| | |
| |
| +---java.lang.Thread.run() |
| |
+----------------------------------------------------------------------------------+------------------+--------------------+
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--
Bela Ban, JGroups lead (http://www.jgroups.org)