From e2816716a0d51eedb715f4eb94b3c108e42c2b43 Mon Sep 17 00:00:00 2001
From: dm9pZCAq <46228973+dm9pZCAq@users.noreply.github.com>
Date: Thu, 26 Sep 2024 12:31:28 +0000
Subject: [PATCH] feat: improve jemalloc memory efficiency (#1689)

---
 .cargo/config.toml | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 .cargo/config.toml

diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 00000000..e3e5301c
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,10 @@
+[env]
+# environment variable for tikv-jemalloc-sys
+#
+# https://jemalloc.net/jemalloc.3.html#opt.narenas
+# narenas is the maximum number of arenas to use for automatic multiplexing
+# of threads and arenas. The default is four times the number of CPUs,
+# or one if there is a single CPU.
+#
+# Improve memory efficiency by reducing fragmentation and ensuring all threads allocate from the same pool
+JEMALLOC_SYS_WITH_MALLOC_CONF = "narenas:1"