# slabinfo.plugin SLAB is a cache mechanism used by the Kernel to avoid fragmentation. Each internal structure (process, file descriptor, inode...) is stored within a SLAB. ## configuring Netdata for slabinfo The plugin is disabled by default because it collects and displays a huge amount of metrics. To enable it set `slabinfo = yes` in the `plugins` section of the `netdata.conf` configuration file. There is currently no configuration needed for the plugin itself. As `/proc/slabinfo` is only readable by root, this plugin is setuid root. ## For what use This slabinfo details allows to have clues on actions done on your system. In the following screenshot, you can clearly see a `find` done on a ext4 filesystem (the number of `ext4_inode_cache` & `dentry` are rising fast), and a few seconds later, an admin issued a `echo 3 > /proc/sys/vm/drop_cached` as their count dropped.