Add wait between requests

Author: thomaschaaf

README.md

@@ -1,6 +1,6 @@
 #  Tool to test how many dns loopups are slower than 100 ms
 
-You can specify the `DNS_NAME` and `DNS_NAME_TIMEOUT` environment variables.
+You can specify the `DNS_NAME`, `DNS_NAME_TIMEOUT` and `WAIT_BETWEEN_REQUESTS` environment variables.
 
 Start with:
 

index.js

@@ -10,6 +10,7 @@ const dnsLoopupAsync = util.promisify(dns.lookup);
 
 const dnsName = process.env.DNS_NAME || 'kubernetes.default.svc.cluster.local';
 const dnsTimeout = parseInt(process.env.DNS_NAME_TIMEOUT, 10) || 100;
+const waitBetweenRequests = parseInt(process.env.WAIT_BETWEEN_REQUESTS, 10) || 100;
 
 (async () => {
   const timeout = new Timeout();
@@ -37,7 +38,7 @@ const dnsTimeout = parseInt(process.env.DNS_NAME_TIMEOUT, 10) || 100;
       timeout.clear();
     }
 
-    await sleep(10);
+    await sleep(waitBetweenRequests);
 
     if (lookups % 100 == 0) {
       const time = Math.round((+new Date() - startDate) / 1000);

kubernetes/deployment.yml

@@ -12,4 +12,6 @@ spec:
       - name: DNS_NAME
         value: 'kubernetes.default.svc.cluster.local'
       - name: DNS_NAME_TIMEOUT
-        value: '100'
+        value: '300'
+      - name: WAIT_BETWEEN_REQUESTS
+        value: '50'