Very often MySQL is much less stable than we realize. In this video I explain how to detect and dianose these MySQL stalls that last for 5-10 seconds or more.
The reason nobody knows about these issues is that they’re:
c) monitoring software can’t catch them
You can use pt-stalk to detect and diagnose such issues. All of the tools I have mentioned in this video are part of Percona Toolkit (no wonder they all start with PT), you can find the toolkit here:
Here’s the main commands I have discussed in this video:
Starting pt-stalk in foreground
Starting pt-stalk in background with email notification:
# pt-stalk …[Read more]