Network settings
Most operating systems are not prepared to efficiently handle very heavy network traffic out of the box. You will need to consult with your networking team on the right settings for your infrastructure and adapt to your kernel, Linux distribution, and network environment. In this section, we'll discuss several common changes that can benefit Ceph deployments.
Jumbo frames
We've mentioned before the value of Jumbo frames to increase performance by increasing network and protocol efficiency. A common raised MTU size is 9,000 bytes; this must be configured within your network infrastructure as well as your system's interface configuration. Depending on your distribution, you may configure this in /etc/network/interfaces
or, interface-specific files like /etc/sysconfig/network-scripts/ifcfg-eth0
.
Note
To dive more deeply into Linux network optimization, including topics like increasing NIC ring buffers, we suggest this document:https://access.redhat.com/sites/default/files/attachments...