Archive for the ‘Kernel’ Category

Activity of the ZFS ARC

Disk I/O is still a common source of performance issues, despite modern cloud environments, modern file systems and huge amounts of main memory serving as file system cache. Understanding how well that cache is working is a key task while investigating disk I/O issues. In this post, I’ll show the activity of the ZFS file [...]

Posted on January 9, 2012 at 4:50 pm by Brendan Gregg · Permalink · 3 Comments
In: Kernel · Tagged with: , , ,