diff --git a/Cargo.lock b/Cargo.lock
index 7659f5670a3..d2b13985de2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2292,6 +2292,12 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "fs_extra"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2022715d62ab30faffd124d40b76f4134a550a87792276512b18d63272333394"
+
 [[package]]
 name = "fuchsia-zircon"
 version = "0.3.3"
@@ -3174,6 +3180,38 @@ version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
 
+[[package]]
+name = "jemalloc-ctl"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c502a5ff9dd2924f1ed32ba96e3b65735d837b4bfd978d3161b1702e66aca4b7"
+dependencies = [
+ "jemalloc-sys",
+ "libc",
+ "paste",
+]
+
+[[package]]
+name = "jemalloc-sys"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0d3b9f3f5c9b31aa0f5ed3260385ac205db665baa41d49bb8338008ae94ede45"
+dependencies = [
+ "cc",
+ "fs_extra",
+ "libc",
+]
+
+[[package]]
+name = "jemallocator"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43ae63fcfc45e99ab3d1b29a46782ad679e98436c3169d15a167a1108a724b69"
+dependencies = [
+ "jemalloc-sys",
+ "libc",
+]
+
 [[package]]
 name = "js-sys"
 version = "0.3.46"
@@ -3338,9 +3376,9 @@ checksum = "66189c12161c65c0023ceb53e2fccc0013311bcb36a7cbd0f9c5e938b408ac96"
 
 [[package]]
 name = "libc"
-version = "0.2.82"
+version = "0.2.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89203f3fba0a3795506acaad8ebce3c80c0af93f994d5a1d7a0b1eeb23271929"
+checksum = "b7282d924be3275cec7f6756ff4121987bc6481325397dde6ba3e7802b1a8b1c"
 
 [[package]]
 name = "libflate"
@@ -3662,6 +3700,9 @@ dependencies = [
  "environment",
  "eth2_network_config",
  "futures 0.3.12",
+ "jemalloc-sys",
+ "jemallocator",
+ "libc",
  "lighthouse_version",
  "logging",
  "remote_signer",
@@ -4402,6 +4443,25 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "paste"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "45ca20c77d80be666aef2b45486da86238fabe33e38306bd3118fe4af33fa880"
+dependencies = [
+ "paste-impl",
+ "proc-macro-hack",
+]
+
+[[package]]
+name = "paste-impl"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d95a7db200b97ef370c8e6de0088252f7e0dfff7d047a28528e47456c0fc98b6"
+dependencies = [
+ "proc-macro-hack",
+]
+
 [[package]]
 name = "pbkdf2"
 version = "0.4.0"
@@ -7114,6 +7174,7 @@ dependencies = [
  "beacon_chain",
  "eth2",
  "headers",
+ "jemalloc-ctl",
  "lazy_static",
  "lighthouse_metrics",
  "safe_arith",
diff --git a/lighthouse/Cargo.toml b/lighthouse/Cargo.toml
index c0daf4455dd..09bf5246de4 100644
--- a/lighthouse/Cargo.toml
+++ b/lighthouse/Cargo.toml
@@ -5,6 +5,7 @@ authors = ["Sigma Prime <contact@sigmaprime.io>"]
 edition = "2018"
 
 [features]
+default = ["jemalloc"]
 # Writes debugging .ssz files to /tmp during block processing.
 write_ssz_files = ["beacon_node/write_ssz_files"]
 # Compiles the BLS crypto code so that the binary is portable across machines.
@@ -18,7 +19,7 @@ spec-minimal = []
 # Support spec v0.12 (used by Medalla testnet).
 spec-v12 = []
 # Use jemalloc as the global allocator
-jemalloc = ["environment/jemalloc", "beacon_node/jemalloc"]
+jemalloc = ["beacon_node/jemalloc", "jemallocator", "libc", "jemalloc-sys"]
 
 [dependencies]
 beacon_node = { "path" = "../beacon_node" }
@@ -43,6 +44,9 @@ directory = { path = "../common/directory" }
 lighthouse_version = { path = "../common/lighthouse_version" }
 account_utils = { path = "../common/account_utils" }
 remote_signer = { "path" = "../remote_signer" }
+jemallocator = { version = "0.3.2", optional = true }
+jemalloc-sys = { version = "0.3.2", optional = true }
+libc = { version = "0.2.86", optional = true }
 
 [dev-dependencies]
 tempfile = "3.1.0"
diff --git a/lighthouse/environment/Cargo.toml b/lighthouse/environment/Cargo.toml
index ed866a000c1..6e0556a6d2d 100644
--- a/lighthouse/environment/Cargo.toml
+++ b/lighthouse/environment/Cargo.toml
@@ -20,7 +20,3 @@ futures = "0.3.7"
 parking_lot = "0.11.0"
 slog-json = "2.3.0"
 exit-future = "0.2.0"
-jemallocator = { version = "0.3.2", optional = true }
-
-[features]
-jemalloc = ["jemallocator"]
diff --git a/lighthouse/environment/src/lib.rs b/lighthouse/environment/src/lib.rs
index 69ea757de53..fee7369ac39 100644
--- a/lighthouse/environment/src/lib.rs
+++ b/lighthouse/environment/src/lib.rs
@@ -27,11 +27,6 @@ use task_executor::TaskExecutor;
 use tokio::runtime::{Builder as RuntimeBuilder, Runtime};
 use types::{EthSpec, MainnetEthSpec, MinimalEthSpec, V012LegacyEthSpec};
 
-/// Global allocator
-#[cfg(feature = "jemalloc")]
-#[global_allocator]
-pub static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
-
 pub const ETH2_CONFIG_FILENAME: &str = "eth2-spec.toml";
 const LOG_CHANNEL_SIZE: usize = 2048;
 /// The maximum time in seconds the client will wait for all internal tasks to shutdown.
diff --git a/lighthouse/src/main.rs b/lighthouse/src/main.rs
index 53f3f2c1058..75e806e8a35 100644
--- a/lighthouse/src/main.rs
+++ b/lighthouse/src/main.rs
@@ -10,6 +10,27 @@ use std::process::exit;
 use types::{EthSpec, EthSpecId};
 use validator_client::ProductionValidatorClient;
 
+/// Global allocator
+#[cfg(feature = "jemalloc")]
+#[global_allocator]
+pub static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;
+
+union U {
+    x: &'static u8,
+    y: &'static libc::c_char,
+}
+
+#[cfg(feature = "jemalloc")]
+#[allow(non_upper_case_globals)]
+#[cfg_attr(prefixed, export_name = "_rjem_malloc_conf")]
+#[cfg_attr(not(prefixed), no_mangle)]
+pub static malloc_conf: Option<&'static libc::c_char> = Some(unsafe {
+    U {
+        x: &b"narenas:1\0"[0],
+    }
+    .y
+});
+
 pub const ETH2_CONFIG_FILENAME: &str = "eth2-spec.toml";
 
 fn bls_library_name() -> &'static str {