[jboss-jira] [JBoss JIRA] (JGRP-2056) Measure latency for RPCs
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https://issues.jboss.org/browse/JGRP-2056?page=com.atlassian.jira.plugin....
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Bela Ban commented on JGRP-2056:
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Latency for members A and B in the same JVM is ~60us for regular messages (JChannel) (bla)
and 3-4us higher for MessageDispatcher (bla2).
Using {{SenderSendsBundler}}, the numbers drop to 42us (bla) and 47us (bla2).
RoundTrip shows RTT times (A and B are 2 processes on the same box) of 102us
({{TransferQueueBundler}}) and 83us ({{SenderSendsBundler}}), which is about twice the
latency, which is OK.
Measure latency for RPCs
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Key: JGRP-2056
URL: https://issues.jboss.org/browse/JGRP-2056
Project: JGroups
Issue Type: Task
Reporter: Bela Ban
Assignee: Bela Ban
Fix For: 4.0
Measure latency for single-thread tests between a sender and a receiver, and identify
potential slow-downs. Look at
* message bundlers at the sender and
* message batch handling at the receiver
This needs to be done for both requests and responses.
Perhaps provide a way for callbacks to be invoked to measure the latency, e.g. request
sent (dest, ID), response received (ID), so that tests like IspnPerfTest could collect
them and create histograms.
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