What is the overhead that Ninja is putting on my Exchange Server? How much CPU is it taking?
Most Exchange Servers are running with the CPU lower than 50%. During our testing we have seen that Ninja with antispam, antivirus and attachment filtering under full load adds about 10% to that load. So a server running at 50% CPU would now run at an average of 60%. However, it can be a lot less! As an example, our own production Exchange Server, a 2 CPU dual-core 3.2 GHz box with 3 gigs of RAM hosting 200 mailboxes, running Ninja processed just under 100,000 email messages in a 24-hour period with the average CPU utilization at 15% CPU, the total Ninja CPU utilization was less than 3% of the CPU.
