Looks good! Thanks, Jiangli
On Thu, Mar 14, 2019 at 9:26 AM Claes Redestad <claes.redes...@oracle.com> wrote: > Hi, > > this RFE was stalled due an interaction with SA that has since been > resolved. As it still applies cleanly I'll consider it reviewed. I'm > just going to do some sanity testing (tier1) before push. > > Thanks! > > /Claes > > On 2018-12-03 17:02, Claes Redestad wrote: > > Hi, > > > > initializing java.util.jar.Attributes.Name.<clinit> executes ~20k > > bytecodes setting up and eagerly calculating case-insensitive hash codes > > for a slew of Name objects. > > > > By archiving the resulting set of Names and initializing public > > constants from the archived map, we reduce time spent starting up > > (Name.<clinit> drops to 368 executed bytecodes) and improve the > > footprint sharing effect of using CDS: > > > > http://cr.openjdk.java.net/~redestad/8214712/jdk.00/ > > > > Testing: tier1-2 running > > > > Verified a 1-2.5ms startup improvement on java -jar Hello.jar > > - significant and stable reduction in instruction count, branches and > > branch misses > > - only adds ~1.1Kb to the dumped CDS archive > > > > Thanks! > > > > /Claes >
