Red Hat I/O Usage Visualizer

Red Hat I/O Usage Visualizer displays a visualization of the I/O device usage statistics captured by the sar utility.

To view the visualizations, upload the sar and lsblk files from a system. The tool generates six charts to illustrate various device usage metrics. The following values (see definitions for each using the man sar command) are included in the displayed charts:

• tps
• rd_sec/s
• wr_sec/s
• avgrq-sz
• avgqu-sz
• await

As a default, the tool only displays statistics for devices that have a mount point in lsblk. To view statistics for other devices, use the chooser to add the target device and click "Apply". Use the displayed buttons to display or hide any of the listed devices.