Author Archives: jnthnwrthngtn

Most of my recent Perl 6 development time has been spent hunting down and fixing various concurrency bugs. We’ve got some nice language features in this area, and they’ve been pretty well received so far. However, compared with many areas … Continue reading →

I’ve had a post in the works for a while about my work to make return faster (as well as routines that don’t return), as well as some notable multi-dispatch performance improvements. While I get over my writer’s block on … Continue reading →

In the last weeks, I’ve been working on various Perl 6 performance improvements. They’ve led to changes in all of MoarVM, NQP, and Rakudo. For each improvement, there are usually three steps involved: Take some program that performs poorly, and … Continue reading →

This post covers the previous two weeks of my Perl 6 grant work. Last time I wrote here, I plotted changes to call frames in MoarVM. Or, as the wonderful Perl Weekly put it, provided way too much information about … Continue reading →

In this post I’ll be talking a lot about call frames, also known as invocation records. Just to be clear about what they are, consider a sub: sub mean(@values) { @values.sum / @values } Whenever we call mean, we create … Continue reading →

Last week, I finally hunted down and fixed the EVAL memory leak, with the help of the heap snapshot analyzer I wrote about recently. I also hunted down a hang in parallel runs of the Perl 6 specification test suite … Continue reading →

Last week wasn’t one of my most productive on Perl 6, thanks to a mix of Easter holiday, a little more work than expected on another project, and feeling a tad under the weather for a day or so. In … Continue reading →