Batch compilation saves time
After V8 9.2 revised memory management, version 9.3 is dedicated to faster compilation: it brings with it batch compilation for Sparkplug, because the security call
mprotect Until now, every compiled function has been a bottleneck when compiling. According to analyzes from the V8 development team, batch compilation should reduce compilation time by up to 44% when using Ignition and Sparkplug.
Android: Website isolation from Specter attacks
In response to the Specter processor vulnerability, Chrome introduced the website isolation option in 2018, and since Chrome 92, it is also available on many sites for Android, which contain sensitive data. V8 9.3 disables mitigation from the previous generation of code, which was not designed for permanent use, and also relies on website isolation on Android. This should both be more effective against attacks and improve benchmark performance on Android.
Further details on V8 9.3 can be found in a blog post.
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