CFV: New Project: Lilliput

Andrew Haley aph at
Tue Mar 23 09:48:39 UTC 2021

Vote: yes

On 3/16/21 1:31 PM, Roman Kennke wrote:
> I hereby propose the creation of the Lilliput Project with
> Roman Kennke as the Lead and Hotspot as the sponsoring
> Group(s).
> Lilliput's primary goal is to explore techniques to downsize Java object 
> headers in the Hotspot JVM from currently 128 bits to 64 bits or even 
> less. This will reduce Java's memory footprint and we expect it to also 
> improve performance across most if not all workloads.
> Roman Kennke is a long-time OpenJDK contributor. He started contributing 
> to Swing and Java2D in 2007 and co-lead the Caciocavallo project (now 
> de-funct), contributed to Thermostat, and also worked on Zero 
> interpreter and Shark compiler. His primary occupation since 2013 is the 
> Shenandoah GC project, which produced the JEP 304: Garbage Collection 
> Interface and JEP 189: JEP 189: Shenandoah: A Low-Pause-Time Garbage 
> Collector.
> Suggested initial committers: John Rose, Dave Dice, Andrew Dinn, Andrew 
> Haley, Erik Österlund, Aleksey Shipilev, Coleen Phillimore, Stefan 
> Karlsson, Per Liden, Thomas Stuefe, Gil Tene, David Holmes, Kim Barrett, 
> Thomas Schatzl
> Votes are due by March, 31st, 2021.
> Only current OpenJDK Members [1] are eligible to vote on this
> motion.  Votes must be cast in the open on the discuss list.
> Replying to this message is sufficient if your mail program
> honors the Reply-To header.
> For Lazy Consensus voting instructions, see [2].
> Roman Kennke
> [1]
> [2]

Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <>
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