Cpu usage what is nice

Performance Zone. Thanks for visiting DZone today,. Edit Profile. Sign Out View Profile. Over 2 million developers have joined DZone. Like 2. Join the DZone community and get the full member experience. Join For Free. Besides those two main categories, there are some more, and some subcategories. The kernel is responsible for low-level tasks, like interacting with the hardware, memory allocation, communicating between OS processes, running device drivers and managing the file system. If it stays high for longer periods of time, you might have a problem with a device driver.

These are higher-level processes, like your application, or the database server running on your machine. If it stays close to the maximum without leaving much idle time for too long, you might have a problem with your application, or another utility running on the machine. How can we visualize this data? One tool is top :. For example, here is the CPU Usage graph of a node in OpsDash, doing a kernel-intensive operation allocating and freeing pages of memory, using the stress utility :.

This can uncover interesting scenarios, like for example the throttling of CPU in an f1-micro instance on the Google Cloud Platform:. That is to say, a quick check of the CPU usage graph of a server can reveal a lot about the workload. For example:. It provides intelligent, customizable dashboards and spam-free alerting via email, HipChat, Slack, PagerDuty and Webhooks.

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