From the course: Linux Foundation Certified System Administrator (LFCS) Cert Prep

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Monitor storage performance

Monitor storage performance - Linux Tutorial

From the course: Linux Foundation Certified System Administrator (LFCS) Cert Prep

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Monitor storage performance

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- [Instructor] In this lesson, we'll look at how we can monitor the performance of our storage devices. Just like CPU and RAM, storage devices have their limits. If a process is overusing the CPU, keeping it at 100%, the system will slow down considerably. And the same can happen if a storage device is overused. Now, we have utilities like top and htop to look at how processes are using the CPU and our RAM. But what about storage devices? How can we see what's reading and writing to these? There are many tools that can monitor read/write operations. Let's look at some of the simpler ones. There's a package called syssat that contains a few such tools, and we can install it with the usual command, sudo apt install syssat. This contains a few other system statistic utilities, but the ones we're interested in right now are called iostat and pidstat. Iostat's name comes from I/O statistics, and I/O is short for input and output, because we can input data to a storage device when we're…

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