RFR: JDK-8188312 Use CDS if present when running the Boot JDK during build
david.holmes at oracle.com
Tue Oct 3 11:02:10 UTC 2017
On 3/10/2017 8:48 PM, Claes Redestad wrote:
> -Xshare:auto silently ignores failures to map the shared archive and
> should be safe to use. I think you're thinking of -Xshare:on which will
> fail/abort the VM if mapping fails.
In that case seems reasonable. But please test thoroughly across all
platforms in JPRT.
> On 2017-10-03 12:28, David Holmes wrote:
>> Hi Magnus,
>> As I just put in the bug report, it isn't quite this simple. You have
>> to be able to tolerate/recover from failure to map the shared archive.
>> On 3/10/2017 8:24 PM, Magnus Ihse Bursie wrote:
>>> We should use CDS to minimize Java startup time during build. We run
>>> multiple Java commands, and every second counts.
>>> On my machine, I get a ~3% build time speedup with this fix.
>>> Bug: https://bugs.openjdk.java.net/browse/JDK-8188312
More information about the build-dev