Enabling keepalives and new experiment results

Author: danielfireman

experiments/nginx.conf

@@ -20,18 +20,22 @@ http {
             #server 192.168.0.2:3000 max_fails=0 fail_timeout=15s;
             #server 192.168.0.3:3000 max_fails=0 fail_timeout=15s;
             #server 192.168.0.4:3000 max_fails=0 fail_timeout=15s;
+			keepalive 4;
         }
 
 
 	server {
 	    listen 80;
 
 	    location / {
-		proxy_pass http://backends;
-		proxy_next_upstream  timeout error http_503;
-		recursive_error_pages   on;
-		proxy_next_upstream_tries 0;
-		proxy_read_timeout 5m; 
+			proxy_pass http://backends;
+			proxy_next_upstream  timeout error http_503;
+			recursive_error_pages   on;
+			proxy_next_upstream_tries 0;
+			proxy_read_timeout 5m; 
+			 # Needed for keepalives.
+            proxy_http_version 1.1;
+            proxy_set_header Connection "";
 	    }
 	}
 
@@ -42,4 +46,3 @@ http {
 	access_log /var/log/nginx/access.log exp;
 	error_log /var/log/nginx/error.log;
 }
-

experiments/stateless.rmd

@@ -59,16 +59,16 @@ nogci.p999 <- quantile(al.nogci$latency, 0.999)
 ggplot(al.cmp, aes(latency, color=Type)) +
   stat_ecdf(size=0.8) +
   # P999
-  annotate(geom="text", x=nogci.p999-0.5, y=0.9906, label="99.999th", angle=90, color="red") + 
+  annotate(geom="text", x=nogci.p999+0.5, y=0.9906, label="99.999th", angle=90, color="red") + 
   geom_vline(xintercept=nogci.p999, linetype="dotted", size=0.8, alpha=0.5, color="red") +
-  annotate(geom="text", x=gci.p999+0.5, y=0.9906, label="99.999th", angle=90, color="blue") +
+  annotate(geom="text", x=gci.p999-0.5, y=0.9906, label="99.999th", angle=90, color="blue") +
   geom_vline(xintercept=gci.p999, linetype="dotted", size=0.8, alpha=0.5, color="blue") +
   
   
   # P99
-  annotate(geom="text", x=nogci.p99-0.5, y=0.9902, label="99th", angle=90, col="red") + 
+  annotate(geom="text", x=nogci.p99+0.5, y=0.9902, label="99th", angle=90, col="red") + 
   geom_vline(xintercept=nogci.p99, linetype="dotted", size=0.8, alpha=0.5, col="red") +
-  annotate(geom="text", x=gci.p99+0.5, y=0.9902, label="99th", angle=90, color="blue") + 
+  annotate(geom="text", x=gci.p99-0.5, y=0.9902, label="99th", angle=90, color="blue") + 
   geom_vline(xintercept=gci.p99, linetype="dotted", size=0.8, alpha=0.5, color="blue") +
 
   scale_x_continuous(breaks=seq(0, max(al.cmp$latency), 2)) +
@@ -78,7 +78,7 @@ ggplot(al.cmp, aes(latency, color=Type)) +
   theme_bw() +
   xlab("Latency(ms)") +
   ylab("ECDF at Tail") 
-#ggsave("stateless/ecdf_tail.png")
+ggsave("stateless/ecdf_tail.png")
 ```
 
 <!-- # Unavailability -->

experiments/stateless/plot_gci_java_1.html

@@ -1,6 +1,6 @@
 Requests      [total, rate]            9600, 80.01
-Duration      [total, attack, wait]    1m59.992301565s, 1m59.987482988s, 4.818577ms
-Latencies     [mean, 50, 95, 99, max]  4.202935ms, 4.043324ms, 5.827673ms, 7.762242ms, 18.676035ms
+Duration      [total, attack, wait]    1m59.990424736s, 1m59.987513498s, 2.911238ms
+Latencies     [mean, 50, 95, 99, max]  3.027682ms, 2.874455ms, 4.340408ms, 5.916129ms, 14.748965ms
 Bytes In      [total, mean]            0, 0.00
 Bytes Out     [total, mean]            0, 0.00
 Success       [ratio]                  100.00%

experiments/stateless/plot_nogci_java_1.html

@@ -1,6 +1,6 @@
 Requests      [total, rate]            9600, 80.01
-Duration      [total, attack, wait]    1m59.990190875s, 1m59.98741926s, 2.771615ms
-Latencies     [mean, 50, 95, 99, max]  3.360036ms, 3.153866ms, 4.804772ms, 7.52571ms, 32.164747ms
+Duration      [total, attack, wait]    1m59.989700175s, 1m59.98742456s, 2.275615ms
+Latencies     [mean, 50, 95, 99, max]  2.603616ms, 2.383129ms, 3.874837ms, 6.32035ms, 21.263766ms
 Bytes In      [total, mean]            0, 0.00
 Bytes Out     [total, mean]            0, 0.00
 Success       [ratio]                  100.00%