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Created attachment 480790 [details] spreadsheet showing test and results. Description of problem: It looks like the presence of flow control has no impact when it is disabled (to be expected) but with flow control on I see about a 10% loss in thruput even though there's no actual flow control happening in this scenario. Version-Release number of selected component (if applicable): development How reproducible: 100% Steps to Reproduce: 1. use qpid-cpp-benchmark - see attached spreadsheet. 2. 3. Actual results: 10% loss in thruput when flow control configured, but thresholds not hit. Expected results: Negligible thruput loss would be expected. Additional info:
A fix has been submitted on trunk upstream: http://svn.apache.org/viewvc?view=revision&revision=1079385
merged to upstream 0.10 branch: http://svn.apache.org/viewvc?view=revision&revision=1079864
Verified on RHEL 5/6 - i686 / x86_64 Tested with 100 runs per arch. Max 0,02 troughput difference observed, with latest packages. # rpm -qa | grep qpid python-qpid-0.10-1.el5.noarch qpid-cpp-client-0.10-8.el5.i386 qpid-cpp-client-ssl-0.10-8.el5.i386 qpid-java-jca-0.10-6.el5.noarch qpid-cpp-mrg-debuginfo-0.10-7.el5.i386 qpid-qmf-devel-0.10-10.el5.i386 qpid-java-client-0.10-6.el5.noarch qpid-qmf-0.10-10.el5.i386 qpid-cpp-client-devel-0.10-8.el5.i386 qpid-cpp-server-xml-0.10-8.el5.i386 qpid-cpp-server-cluster-0.10-8.el5.i386 qpid-tools-0.10-6.el5.noarch rh-qpid-cpp-tests-0.10-8.el5.i386 qpid-java-example-0.10-6.el5.noarch qpid-cpp-client-devel-docs-0.10-8.el5.i386 python-qpid-qmf-0.10-10.el5.i386 qpid-cpp-server-store-0.10-8.el5.i386 qpid-cpp-server-devel-0.10-8.el5.i386 qpid-qmf-debuginfo-0.10-10.el5.i386 qpid-dotnet-0.4.738274-2.el5.i386 qpid-java-common-0.10-6.el5.noarch qpid-cpp-server-0.10-8.el5.i386 qpid-cpp-server-ssl-0.10-8.el5.i386 --> VERIFIED