Merge pull request #3421 from edx/pwnage101/PERF-372-x-queue-start

instruct nginx to add a X-Queue-Start header

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/analytics_api.j2

@@ -48,6 +48,10 @@ location @proxy_to_app {
     proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/cms.j2

@@ -94,6 +94,10 @@ error_page {{ k }} {{ v }};
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
     {% endif %}
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/credentials.j2

@@ -56,6 +56,10 @@ location @proxy_to_app {
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
     {% endif %}
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/ecommerce.j2

@@ -86,6 +86,10 @@ location @proxy_to_app {
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
     {% endif %}
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/edx_notes_api.j2

@@ -46,6 +46,10 @@ location @proxy_to_app {
     proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/forum.j2

@@ -52,6 +52,10 @@ location @proxy_to_app {
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
     {% endif %}
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/insights.j2

@@ -36,6 +36,10 @@ location @proxy_to_app {
     proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/lms-preview.j2

@@ -30,6 +30,10 @@ server {
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
     {% endif %}
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/lms.j2

@@ -123,6 +123,10 @@ error_page {{ k }} {{ v }};
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
     {% endif %}
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/programs.j2

@@ -102,6 +102,10 @@ location @proxy_to_app {
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
     {% endif %}
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/xqueue.j2

@@ -25,6 +25,10 @@ location @proxy_to_app {
     proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;

playbooks/roles/nginx/templates/edx/app/nginx/sites-available/xserver.j2

@@ -29,6 +29,10 @@ server {
     proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
     proxy_set_header X-Forwarded-Port $http_x_forwarded_port;
     proxy_set_header X-Forwarded-For $http_x_forwarded_for;
+
+    # newrelic-specific header records the time when nginx handles a request.
+    proxy_set_header X-Queue-Start "t=${msec}";
+
     proxy_set_header Host $http_host;
 
     proxy_redirect off;