Struct deno_core::HeapLimits

pub struct HeapLimits {
    pub initial: usize,
    pub max: usize,
}

Minimum and maximum bytes of heap used in an isolate

Fields

initial: usize

By default V8 starts with a small heap and dynamically grows it to match the set of live objects. This may lead to ineffective garbage collections at startup if the live set is large. Setting the initial heap size avoids such garbage collections. Note that this does not affect young generation garbage collections.

max: usize

When the heap size approaches max, V8 will perform series of garbage collections and invoke the NearHeapLimitCallback. If the garbage collections do not help and the callback does not increase the limit, then V8 will crash with V8::FatalProcessOutOfMemory.