Add Docs to nginx benchmark.

Adds docs to nginx and refactors both Httpd and Nginx benchmarks.

Key changes:
- Add docs and make nginx tests the same as httpd (reverse, all docs, etc.).
- Make requests scale on c * b.N -> a request per thread. This works well
with both --test.benchtime=10m (do a run that lasts at least 10m) and
--test.benchtime=10x (do b.N = 10).
-- Remove a doc from both tests (1000Kb) as 1024Kb exists.

PiperOrigin-RevId: 329751091

2 files changed, 29 insertions, 0 deletions

diff --git a/images/benchmarks/nginx/Dockerfile b/images/benchmarks/nginx/Dockerfile
index b64eb52ae..2444d04b1 100644
--- a/images/benchmarks/nginx/Dockerfile
+++ b/images/benchmarks/nginx/Dockerfile
@@ -1 +1,11 @@
 FROM nginx:1.15.10
+
+# Generate a bunch of relevant files.
+RUN mkdir -p /local && \
+        for size in 1 10 100 1024 10240; do \
+                dd if=/dev/zero of=/local/latin${size}k.txt count=${size} bs=1024; \
+        done
+
+RUN touch /local/index.html
+
+COPY ./nginx.conf /etc/nginx/nginx.conf
diff --git a/images/benchmarks/nginx/nginx.conf b/images/benchmarks/nginx/nginx.conf
new file mode 100644
index 000000000..2c43c0cda
--- /dev/null
+++ b/images/benchmarks/nginx/nginx.conf
@@ -0,0 +1,19 @@
+user  nginx;
+worker_processes  1;
+daemon off;
+
+error_log  /var/log/nginx/error.log warn;
+pid        /var/run/nginx.pid;
+
+events {
+    worker_connections  1024;
+}
+
+
+http {
+    server {
+      location / {
+        root /tmp/html;
+      }
+    }
+}