XenServer Peformance: Disable Checksum Offload on PIF's/VIF's

Please create a backup copy of the xapi database.
You can do it using the following command:
xe pool-dump-database file-name=/tmp/xapi1.xml

Please use WinSCP to download the file xapi1.xml from the /tmp location to your workstation and keep it in a safe place.

We need to disable all the checksum offloading on all the interfaces in XenServer (this one will require XenServer reboot – do it in a maintenance window):

Please upload the unzipped script attached, into. e.g. /root directory and execute it, using the following guide:
Please note this file will generate a error if it is modified in windows and contains CR/LF.

if-set

Change directory
cd /root
Allow the script to be executed:
chmod u+x if-set
Execute:
./if-set
Now, script is disabling all the offload settings for all PIF and VIF interfaces. 

It is necessary to reboot the XenServer afterwards.