diff --git a/cli/lsp/tsc.rs b/cli/lsp/tsc.rs
index c9b24176ad..48dcb79644 100644
--- a/cli/lsp/tsc.rs
+++ b/cli/lsp/tsc.rs
@@ -34,6 +34,7 @@ use crate::util::path::relative_specifier;
 use crate::util::path::to_percent_decoded_str;
 use crate::util::result::InfallibleResultExt;
 use crate::util::v8::convert;
+use crate::worker::create_isolate_create_params;
 use deno_core::convert::Smi;
 use deno_core::convert::ToV8;
 use deno_core::error::StdAnyError;
@@ -4760,6 +4761,7 @@ fn run_tsc_thread(
       specifier_map,
       request_rx,
     )],
+    create_params: create_isolate_create_params(),
     startup_snapshot: Some(tsc::compiler_snapshot()),
     inspector: has_inspector_server,
     ..Default::default()
diff --git a/cli/tsc/mod.rs b/cli/tsc/mod.rs
index 452d5c165a..8f8bed20a4 100644
--- a/cli/tsc/mod.rs
+++ b/cli/tsc/mod.rs
@@ -9,6 +9,7 @@ use crate::npm::CliNpmResolver;
 use crate::resolver::CjsTracker;
 use crate::util::checksum;
 use crate::util::path::mapped_specifier_for_tsc;
+use crate::worker::create_isolate_create_params;
 
 use deno_ast::MediaType;
 use deno_core::anyhow::anyhow;
@@ -1104,6 +1105,7 @@ pub fn exec(request: Request) -> Result<Response, AnyError> {
       root_map,
       remapped_specifiers,
     )],
+    create_params: create_isolate_create_params(),
     ..Default::default()
   });
 
diff --git a/cli/worker.rs b/cli/worker.rs
index 1afe37e346..c6cbf77f1b 100644
--- a/cli/worker.rs
+++ b/cli/worker.rs
@@ -555,6 +555,7 @@ impl CliMainWorkerFactory {
       permissions,
       v8_code_cache: shared.code_cache.clone(),
     };
+
     let options = WorkerOptions {
       bootstrap: BootstrapOptions {
         deno_version: crate::version::DENO_VERSION_INFO.deno.to_string(),
@@ -585,7 +586,7 @@ impl CliMainWorkerFactory {
       },
       extensions: custom_extensions,
       startup_snapshot: crate::js::deno_isolate_init(),
-      create_params: None,
+      create_params: create_isolate_create_params(),
       unsafely_ignore_certificate_errors: shared
         .options
         .unsafely_ignore_certificate_errors
@@ -786,6 +787,7 @@ fn create_web_worker_callback(
       },
       extensions: vec![],
       startup_snapshot: crate::js::deno_isolate_init(),
+      create_params: create_isolate_create_params(),
       unsafely_ignore_certificate_errors: shared
         .options
         .unsafely_ignore_certificate_errors
@@ -806,6 +808,17 @@ fn create_web_worker_callback(
   })
 }
 
+/// By default V8 uses 1.4Gb heap limit which is meant for browser tabs.
+/// Instead probe for the total memory on the system and use it instead
+/// as a default.
+pub fn create_isolate_create_params() -> Option<v8::CreateParams> {
+  let maybe_mem_info = deno_runtime::sys_info::mem_info();
+  maybe_mem_info.map(|mem_info| {
+    v8::CreateParams::default()
+      .heap_limits_from_system_memory(mem_info.total, 0)
+  })
+}
+
 #[allow(clippy::print_stdout)]
 #[allow(clippy::print_stderr)]
 #[cfg(test)]
diff --git a/runtime/lib.rs b/runtime/lib.rs
index 8a228c5b59..a6e60ced18 100644
--- a/runtime/lib.rs
+++ b/runtime/lib.rs
@@ -35,6 +35,7 @@ pub mod js;
 pub mod ops;
 pub mod permissions;
 pub mod snapshot;
+pub mod sys_info;
 pub mod tokio_util;
 pub mod web_worker;
 pub mod worker;
diff --git a/runtime/ops/os/mod.rs b/runtime/ops/os/mod.rs
index b10a2939e6..74c708c532 100644
--- a/runtime/ops/os/mod.rs
+++ b/runtime/ops/os/mod.rs
@@ -1,5 +1,6 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
+use crate::sys_info;
 use crate::worker::ExitCode;
 use deno_core::op2;
 use deno_core::v8;
@@ -11,8 +12,6 @@ use serde::Serialize;
 use std::collections::HashMap;
 use std::env;
 
-mod sys_info;
-
 deno_core::extension!(
   deno_os,
   ops = [
diff --git a/runtime/ops/os/sys_info.rs b/runtime/sys_info.rs
similarity index 100%
rename from runtime/ops/os/sys_info.rs
rename to runtime/sys_info.rs
diff --git a/runtime/web_worker.rs b/runtime/web_worker.rs
index b056e01fcb..8e0c870d1a 100644
--- a/runtime/web_worker.rs
+++ b/runtime/web_worker.rs
@@ -361,6 +361,8 @@ pub struct WebWorkerOptions {
   pub extensions: Vec<Extension>,
   pub startup_snapshot: Option<&'static [u8]>,
   pub unsafely_ignore_certificate_errors: Option<Vec<String>>,
+  /// Optional isolate creation parameters, such as heap limits.
+  pub create_params: Option<v8::CreateParams>,
   pub seed: Option<u64>,
   pub create_web_worker_cb: Arc<ops::worker_host::CreateWebWorkerCb>,
   pub format_js_error_fn: Option<Arc<FormatJsErrorFn>>,
@@ -563,6 +565,7 @@ impl WebWorker {
     let mut js_runtime = JsRuntime::new(RuntimeOptions {
       module_loader: Some(services.module_loader),
       startup_snapshot: options.startup_snapshot,
+      create_params: options.create_params,
       get_error_class_fn: options.get_error_class_fn,
       shared_array_buffer_store: services.shared_array_buffer_store,
       compiled_wasm_module_store: services.compiled_wasm_module_store,