Erik J. raises a good point in the bug report that
-XX:SharedArchiveFile=xxx should be used if we create the archive. The
build system has no business creating an archive inside the boot JDK.
David
On 3/10/2017 9:02 PM, David Holmes wrote:
Hi Claes,
On 3/10/2017 8:48 PM, Claes Redestad wrote:
Hi,
-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.
Ah okay.
In that case seems reasonable. But please test thoroughly across all
platforms in JPRT.
Thanks,
David
/Claes
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.
Cheers,
David
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
WebRev:
http://cr.openjdk.java.net/~ihse/JDK-8188312-use-CDS-for-bootjdk/webrev.01
/Magnus
