Comment 11 for bug 2021571

It examines the blkio device tree and sums data as far as i know. Removed devices do not get deleted from the blkio statistics tree and are just marked as offline somehow.

In our case racadm lclog created and destroyed usb devices to pull data and the blkio tree reached over 65000 leafs. It takes time to process a tree that large. WE believe our issue was caused by accumulation over time of the usb device leafs from racadm lclog. WE had it running in a cron which has now been stopped.