Add tests section

Signed-off-by: Ivan Bushchik <ivabus@ivabus.dev>

_posts/2023-10-21-overclocking-starfive-vf2.md

@@ -2,28 +2,28 @@
 layout: post
 summary: "Up to 1.8 GHz without throttling"
 title: "Overclocking StarFive VisionFive 2"
-toc: false
+toc: true
 ---
 
 # TL;DR
 
 Apply a [patch](/posts_media/2023-10-21-overclocking-starfive-vf2/overclock_vf2.patch) to JH7110_VisionFive2_upstream branch of [starfive-tech/linux](https://github.com/starfive-tech/linux). `make -j4; make modules_install; make install; make dtbs_install`. Edit /boot/uEnv.txt `fdtfile` with a proper devicetree path. Profit!
 
-# Introduction
+## Introduction
 
 The SiFive U74 frequency in StarFive JH7110 is 1.5 GHz by default, but it can work much better, because even under load the temperature never exceeds 50ºC, so overclocking is worth it. The JH110 can be overclocked to 1.8 GHz, which will be done in this article.
 
 Warning: You are responsible for the safety of your board.
 
-# Prerequisites
+## Prerequisites
 
 - Tree of [starfive-tech/linux](https://github.com/starfive-tech/linux)
 - [Patch](/posts_media/2023-10-21-overclocking-starfive-vf2/overclock_vf2.patch)
 - Some kind of cooling (just a fan, or with a heat sink)
 
-# Steps
+## Steps
 
-## Apply a patch
+### Apply a patch
 
 ```shell
 cd linux
@@ -31,14 +31,14 @@ git checkout JH7110_VisionFive2_upstream
 git apply /path/to/patch/overclock_vf2.patch
 ```
 
-## Compile the kernel
+### Compile the kernel
 
 ```shell
 make starfive_visionfive2_defconfig
 make -j4
 ```
 
-## Install new kernel
+### Install new kernel
 
 Run as root
 
@@ -48,7 +48,7 @@ make install
 make dtbs_install
 ```
 
-## Configure bootloader
+### Configure bootloader
 
 Your bootloader should be configured to use `starfive/jh7110-starfive-visionfive-2-v1.3b.dtb` devicetree file.
 
@@ -69,6 +69,16 @@ fdtfile=KERNEL_VERSION/starfive/jh7110-starfive-visionfive-2-v1.3b.dtb
 bootcmd=run load_distro_uenv;run bootcmd_distro
 ```
 
-## Reboot and have fun
+### Reboot and have fun
 
 After you successfully overclocked your VF2, you can ask yourself a question - "can it do better?". [No, it can't](http://forum.rvspace.org/t/how-do-you-overclock-the-vf2/2920/5).
+
+## Tests
+
+All tests were performed out at an ambient temperature of 21ºC.
+
+### Stress
+
+25-minute `stress -c 8` run. [Raw data (without heatsink) (timestamp, temp * 1000)](/posts_media/2023-10-21-overclocking-starfive-vf2/vf2_stress_data), [raw data (with heatsink)](/posts_media/2023-10-21-overclocking-starfive-vf2/vf2_stress_data_heatsink).
+
+![Stress test graph](/posts_media/2023-10-21-overclocking-starfive-vf2/vf2_stress.jpeg)