(Cherry-pick) Add longevity results for 1.4.0 (#2427) (#2428)

Add longevity results for 1.4.0 (#2427)

Author: sjberman

tests/README.md

@@ -358,7 +358,7 @@ Finally, run
 make stop-longevity-test
 ```
 
-This will tear down the test and collect results into a file, where you can add the PNGs of the dashboard.
+This will tear down the test and collect results into a file, where you can add the PNGs of the dashboard. The results collection creates multiple files that you will need to manually combine as needed (logs file, traffic output file).
 
 ### Common test amendments
 

tests/results/longevity/1.4.0/oss-cpu.png

@@ -0,0 +1,94 @@
+# Results
+
+## Test environment
+
+NGINX Plus: false
+
+NGINX Gateway Fabric:
+
+- Commit: f765b79b6cb76bf18affd138604ca0ee12f57a19
+- Date: 2024-08-15T21:46:21Z
+- Dirty: false
+
+GKE Cluster:
+
+- Node count: 12
+- k8s version: v1.29.7-gke.1008000
+- vCPUs per node: 2
+- RAM per node: 4019160Ki
+- Max pods per node: 110
+- Zone: us-west2-a
+- Instance Type: e2-medium
+
+## Traffic
+
+HTTP:
+
+```text
+Running 5760m test @ http://cafe.example.com/coffee
+  2 threads and 100 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency   139.11ms  117.12ms   2.00s    91.14%
+    Req/Sec   396.68    259.55     2.08k    65.79%
+  268947649 requests in 5760.00m, 92.04GB read
+  Socket errors: connect 0, read 344704, write 0, timeout 565
+Requests/sec:    778.20
+Transfer/sec:    279.25KB
+```
+
+HTTPS:
+
+```text
+Running 5760m test @ https://cafe.example.com/tea
+  2 threads and 100 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency   131.64ms   94.48ms   1.99s    70.49%
+    Req/Sec   395.26    259.07     2.08k    65.47%
+  267943878 requests in 5760.00m, 90.15GB read
+  Socket errors: connect 0, read 338530, write 0, timeout 9
+Requests/sec:    775.30
+Transfer/sec:    273.51KB
+```
+
+### Logs
+
+No error logs in nginx-gateway
+
+No error logs in nginx
+
+### Key Metrics
+
+#### Containers memory
+
+![oss-memory.png](oss-memory.png)
+
+#### NGF Container Memory
+
+![oss-ngf-memory.png](oss-ngf-memory.png)
+
+### Containers CPU
+
+![oss-cpu.png](oss-cpu.png)
+
+### NGINX metrics
+
+![oss-stub-status.png](oss-stub-status.png)
+
+### Reloads
+
+Rate of reloads - successful and errors:
+
+![oss-reloads.png](oss-reloads.png)
+
+
+Reload spikes correspond to 1 hour periods of backend re-rollouts.
+
+No reloads finished with an error.
+
+Reload time distribution - counts:
+
+![oss-reload-time.png](oss-reload-time.png)
+
+## Comparison with previous runs
+
+Graphs look similar to 1.3.0 results.