node: re-tune maxconns and fly limits

kaambiz · Nov 20, 2023 · 4bad1fa · 4bad1fa
1 parent 0579ed3
commit 4bad1fa
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Showing 2 changed files with 8 additions and 8 deletions.
diff --git a/fly.toml b/fly.toml
@@ -32,8 +32,8 @@ swap_size_mb = 152
 
   [services.concurrency]
     type = "connections"
-    hard_limit = 375
-    soft_limit = 300
+    hard_limit = 775
+    soft_limit = 600
 
   [[services.tcp_checks]]
     # super aggressive interval and timeout because
@@ -61,8 +61,8 @@ swap_size_mb = 152
 
   [services.concurrency]
     type = "connections"
-    hard_limit = 375
-    soft_limit = 300
+    hard_limit = 775
+    soft_limit = 600
 
   [[services.tcp_checks]]
     # super aggressive interval and timeout because

diff --git a/src/commons/envutil.js b/src/commons/envutil.js
@@ -191,16 +191,16 @@ export function isCleartext() {
 
 // sysctl get net.ipv4.tcp_syn_backlog
 export function tcpBacklog() {
-  if (!envManager) return 300;
+  if (!envManager) return 600; // same as fly.service soft_limit
 
-  return envManager.get("TCP_BACKLOG") || 300;
+  return envManager.get("TCP_BACKLOG") || 600;
 }
 
 // don't forget to update the fly.toml too
 export function maxconns() {
-  if (!envManager) return 500;
+  if (!envManager) return 1000; // 25% higher than fly.service hard_limit
 
-  return envManager.get("MAXCONNS") || 500;
+  return envManager.get("MAXCONNS") || 1000;
 }
 
 export function minconns() {