Use jemalloc

Following https://github.com/romanz/electrs/issues/1114

Cargo.lock

@@ -402,6 +402,7 @@ dependencies = [
  "electrs-rocksdb",
  "env_logger",
  "hex_lit",
+ "jemallocator",
  "log",
  "parking_lot",
  "prometheus",
@@ -590,6 +591,26 @@ version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b1a46d1a171d865aa5f83f92695765caa047a9b4cbae2cbf37dbd613a793fd4c"
 
+[[package]]
+name = "jemalloc-sys"
+version = "0.5.4+5.3.0-patched"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac6c1946e1cea1788cbfde01c993b52a10e2da07f4bac608228d1bed20bfebf2"
+dependencies = [
+ "cc",
+ "libc",
+]
+
+[[package]]
+name = "jemallocator"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a0de374a9f8e63150e6f5e8a60cc14c668226d7a347d8aee1a45766e3c4dd3bc"
+dependencies = [
+ "jemalloc-sys",
+ "libc",
+]
+
 [[package]]
 name = "jobserver"
 version = "0.1.26"

Cargo.toml

@@ -29,6 +29,7 @@ configure_me = "0.4"
 crossbeam-channel = "0.5"
 dirs-next = "2.0"
 env_logger = "0.10"
+jemallocator = "0.5"
 log = "0.4"
 parking_lot = "0.12"
 prometheus = { version = "0.13", optional = true }

src/bin/electrs.rs

@@ -1,5 +1,10 @@
 use anyhow::Result;
 
+use jemallocator::Jemalloc;
+
+#[global_allocator]
+static GLOBAL: Jemalloc = Jemalloc;
+
 fn main() -> Result<()> {
     electrs::run()
 }