Dell EMC VxFlex Ready Node - Optimize Linux; Test Ping to Ensure Mtu Setting

Procedure
1. Edit the /etc/sysconfig/network/ifcfg-<NIC_NAME>.
2. Add parameter mtu=9000 to the file.
3. To apply the changes type:
service network restart
4. Execute ifconfig command again to confirm that the settings have been
changed.
5. To test the command type:
ping –M do –s 8972 <DESTINATION_IP_ADDRESS>
Output should look similar to the following:
Figure 29 Test ping to ensure mtu setting
Optimize Linux
When using the SSD devices, it is recommended that the I/O scheduler of the devices
be modified.
Type the following on each server, for each SDS device:
echo noop > /sys/block/<device_name>/queue/scheduler
For example:
echo noop > /sys/block/sdb/queue/scheduler
When CPUs have more than twelve physical cores and more performance is required
from the node. For example: when CloudLink is being used for SW encryption or when
VxFlex OS performance fine-tuning
Dell EMC VxFlex Ready Node AMS User Guide 121