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ASF subversion and git services commented on PROTON-1911: --------------------------------------------------------- Commit b5ef5e625fa21537bbe8aae574684368e31d252e in qpid-proton-j's branch refs/heads/master from [~gemmellr] [ https://git-wip-us.apache.org/repos/asf?p=qpid-proton-j.git;h=b5ef5e6 ] PROTON-1911: add JMH test of encoding message with various elements of string metadata and payload > Performance issue in EncoderImpl#writeRaw(String) > ------------------------------------------------- > > Key: PROTON-1911 > URL: https://issues.apache.org/jira/browse/PROTON-1911 > Project: Qpid Proton > Issue Type: Improvement > Components: proton-j > Affects Versions: proton-j-0.25.0, proton-j-0.28.0 > Reporter: Jens Reimann > Priority: Major > Labels: pull-request-available > Attachments: qpid_encode_1.png, qpid_encode_2.png, qpid_encode_3.png, > qpid_encode_4.png, strings_encode_after.json, strings_encode_before.json > > > While digging into performance issues in the Eclipse Hono project I noticed a > high consumption of CPU time when encoding AMQP messages using proton-j. > I made a small reproducer and threw the same profiler at it, here are the > results: > As you can see in the attach screenshot (the first is the initial run with > the current code) most of the time is consumed in > EncoderImpl#writeRaw(String). This due to the fact that is call "put" for > every byte it want to encode. > The following screenshots are from a patched version which uses a small > thread local buffer to locally encode the raw data and then flush it to the > buffer in bigger chunks. > Screenshot 3 and 4 show the improve performance, but also show that the > memory consumption stays low. > -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@qpid.apache.org For additional commands, e-mail: dev-h...@qpid.apache.org