added jemallocator as default allocator

reasoning: we're going to be doing a lot of heap allocations

Cargo.lock

@@ -338,6 +338,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "fs_extra"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2022715d62ab30faffd124d40b76f4134a550a87792276512b18d63272333394"
+
 [[package]]
 name = "fuchsia-cprng"
 version = "0.1.1"
@@ -729,6 +735,27 @@ version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd25036021b0de88a0aff6b850051563c6516d0bf53f8638938edbb9de732736"
 
+[[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 = "kernel32-sys"
 version = "0.2.2"
@@ -1988,6 +2015,7 @@ dependencies = [
  "generational-arena",
  "getrandom 0.2.1",
  "hex-literal 0.3.1",
+ "jemallocator",
  "khash",
  "lazy_static",
  "log",

Cargo.toml

@@ -23,6 +23,7 @@ futures = "0.3.12"
 generational-arena = "0.2.8"
 getrandom = "0.2.1"
 hex-literal = "0.3.1"
+jemallocator = "0.3.2"
 khash = "2.0.0"
 lazy_static = "1.4.0"
 log = "0.4.11"

src/main.rs

@@ -26,6 +26,11 @@ use color_eyre::{
     SectionExt, Help
 };
 
+use jemallocator::Jemalloc;
+
+#[global_allocator]
+static GLOBAL: Jemalloc = Jemalloc;
+
 #[macro_use] mod ext; use ext::*;
 
 mod service;