JEP proposed to target JDK 11: 318: Epsilon: An Arbitrarily Low-Overhead Garbage Collector (original) (raw)

Roger Riggs Roger.Riggs at Oracle.com
Thu Jan 18 13:56:47 UTC 2018

Hi Aleksey,

Does the entire test suite pass with this collector? In spite of Andrew's point, there are numerous tests of behavior that are effects/side effects of collectors that will fail. Does the JCK pass with this option (the all modes rule). If not will, will you modify all those tests to @require other collectors so they are not run with -XX:+UseNoGC?

It would be bad form to commit a change that causes a large number of regular tests to fail.

Thanks, Roger

On 1/18/2018 6:10 AM, Aleksey Shipilev wrote:

On 01/18/2018 10:26 AM, Erik Österlund wrote:

On 2018-01-18 10:12, Stefan Johansson wrote:

On 2018-01-17 10:43, Aleksey Shipilev wrote:

name. So, as long as there is no overwhelming amount of strong opinions against it, I'd keep the name as is. I'm with Charlie here, I think -XX:+UseNoGC would be better and much more descriptive name for this feature. This is not a garbage collector, because it does not collect garbage. It is an allocator. Therefore, I also think the -XX:+UseNoGC name is more descriptive. All right, I added -XX:+UseNoGC as the alias option to the current development patch: http://hg.openjdk.java.net/jdk/sandbox/rev/dd005db4ec5c I still believe the purpose for this thread is not about getting tangled up in implementation details and bikeshedding. We would decide which alias to drop later. Makes everyone happy at the moment? -Aleksey

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