On 11/17/2014 02:09 AM, Claes Redestad wrote: > http://cr.openjdk.java.net/~redestad/8065070/webrev.00 > https://bugs.openjdk.java.net/browse/JDK-8065070
(Not a Reviewer) The change looks very sane given the capture ranges are already available in Matcher. I wonder if you want to cache m.start() and m.end() in locals while you are at it -- I would think this amounts to moving tTStart, tTEnd a few lines before. > @Benchmark > public String formatIndexedDoubleExpr() { > return String.format("%1$2.3f", pi); > } > > before: 1082.564 18.943 ops/ms > after: 1309.945 18.219 ops/ms # 1.21x So this measures both the formatter setup costs and the actual formatting, right? 1.21x on that composite operation means even more speedup on formatter setup? Thanks, -Aleksey.