RFR: 8209120: Archive the Integer.IntegerCache (original) (raw)

Alan Bateman Alan.Bateman at oracle.com
Thu Aug 9 11:41:27 UTC 2018

On 09/08/2018 12:33, Claes Redestad wrote:

Hi,

using the new ability to archive immutable heap graphs into the CDS archive, even archiving small things like the Integer.IntegerCache can be profitable. Webrev: http://cr.openjdk.java.net/~redestad/8209120/open.00/ Bug: https://bugs.openjdk.java.net/browse/JDK-8209120 For a default cache (256 elements), this change saves us ~1 million instructions. Applications that use -XX:AutoBoxCacheMax can profit further (and we can use this to stress test the archiving feature..) The patch is built on top of and tested with Jiangli's patch for https://bugs.openjdk.java.net/browse/JDK-8207263 and I don't intent to push this before that is in. Nice! What would you think about testing a test to at least exercise combinations of AutoBoxCacheMax at dump time and run time.

-Alan

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