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Given that Corretto is in production at Amazon today could this by default become the most popular (by production instances) JVM? Let's say Corretto becomes the

Given that Corretto is in production at Amazon today could this by default become the most popular (by production instances) JVM? Let's say Corretto becomes the default in BeanStalk, Lambda, and maybe some popular AMI's. Would that be enough? Let's say sometime next year some performance benchmarks come out and Corretto is in fact faster than Oracle's JVM. Would people be quick to switch? Would enough people switch? I feel like the Java ecosystem has been at the verge of a "phase shift" for a long time. There's a lot of pent up demand for features and Oracle and the governance process just aren't delivering. So now Amazon steps in and, just think about it, what are the odds this JVM ends up faster, better, and gasp with some new features people want.

chrisseaton 8y ago
> Let's say sometime next year some performance benchmarks come out and Corretto is in fact faster than Oracle's JVM. What tricks do you think they've got up their sleeve to make it faster?
wjoe 8y ago
I suspect it already is in use in Lambda, an AWS rep mentioned something about them using a custom JVM internally for Lambdas when they gave a talk at our company recently, so this is probably that. As for the default on AMIs, it probably will go that way when OpenJDK 8 support ends next year. They'll have the option of distributing RedHat's OpenJDK build with their patches, or packaging their own. It'll probably be similar to the `mysql` package actually providing MariaDB, and no one will really notice. I am intrigued if there will be noticable performance improvements. They do mention performance enhancements on the page, but I believe this is more about dealing with Oracle's licensing changes and maintaining support for the LTS releases. But there's plenty of incentive for them to make it better performing than alternatives too. I expect my company will switch to this because we're already on Amazon Linux 2, and have been struggling to make a decision on how to update the JDK with future releases. But if there are performance improvements, that might push some more AWS users to switch to Amazon Linux over Ubuntu and other distros in EC2.

chrisseaton 8y ago

> Let's say sometime next year some performance benchmarks come out and Corretto is in fact faster than Oracle's JVM. What tricks do you think they've got up their sleeve to make it faster?

wjoe 8y ago

I suspect it already is in use in Lambda, an AWS rep mentioned something about them using a custom JVM internally for Lambdas when they gave a talk at our company recently, so this is probably that. As for the default on AMIs, it probably will go that way when OpenJDK 8 support ends next year. They'll have the option of distributing RedHat's OpenJDK build with their patches, or packaging their own. It'll probably be similar to the `mysql` package actually providing MariaDB, and no one will really notice. I am intrigued if there will be noticable performance improvements. They do mention performance enhancements on the page, but I believe this is more about dealing with Oracle's licensing changes and maintaining support for the LTS releases. But there's plenty of incentive for them to make it better performing than alternatives too. I expect my company will switch to this because we're already on Amazon Linux 2, and have been struggling to make a decision on how to update the JDK with future releases. But if there are performance improvements, that might push some more AWS users to switch to Amazon Linux over Ubuntu and other distros in EC2.