Joe Mario

Joe Mario's contributions

Article Thumbnail
Article

Get 1v1 performance help at Summit 2015! Beer, too.

Joe Mario

Is your server running slowly? Has your network tuning run a muck? Is Red Hat Atomic Host not scaling for you? Whatever your performance problem is (Base OS, Containers, Virtualization, OpenStack, Storage, Databases), stop by and talk with Red Hat's engineers face-to-face for 1:1 performance help. When and where: Performance analysis & tuning: An interactive mixer Wednesday 6:00-7:00 PM Room 206 Stop by for some food, beverage, and leave with with ideas to solve your performance problems! Joe

Article Thumbnail
Article

False cacheline sharing: New tool to pinpoint where it's happening - DevNation talk

Joe Mario

Is your application's performance having problems scaling properly? If so, do you know if it’s due to false cacheline sharing – causing the ping-ponging of cachelines between NUMA nodes? False sharing occurs when one or more processes or threads repeatedly modifies data co-located in the same cacheline. This forces the other processes and threads to invalidate their cached copies and reload, often from main memory, with the updated values. This can slow programs down considerably. Red Hat has developed an...