openssl-speed: add page (#21691)

pages/common/openssl-speed.md

@@ -0,0 +1,32 @@
+# openssl speed
+
+> Benchmark OpenSSL algorithms.
+> More information: <https://docs.openssl.org/master/man1/openssl-speed/>.
+
+- Benchmark all available algorithms:
+
+`openssl speed`
+
+- Benchmark the most common algorithms:
+
+`openssl speed {{md5 sha1 sha256 aes rsa}}`
+
+- Benchmark a specific EVP cipher:
+
+`openssl speed -evp {{aes-256-cbc}}`
+
+- Benchmark algorithms for a specific duration (in seconds):
+
+`openssl speed -seconds {{10}}`
+
+- Benchmark using wall-clock time instead of CPU user time:
+
+`openssl speed -elapsed`
+
+- Output in machine readable format:
+
+`openssl speed -mr`
+
+- Benchmark multiple algorithms in parallel using all available CPU cores:
+
+`openssl speed -multi $(nproc)`