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I know that XECUTE command is much less efficient since it needs both run-time compilation of the code and an entry in the invocation stack.
I have the following command
s var="s ^globalname(sub1,sub2,sub3)=value" or s var="s value=^globalname(sub1,sub2,sub3)"
Can someone give me some clue how much performance cost it is for the xecute command above? If that can save me a global access, should I go for it or the xecute command cost much more time than additional global hit.
Also another question:
Suppose a global is set in the database, I need to get the told value from global and update the global to a new value. there are two options:
1. Read the global, kill the global and then immediately set it with new value.
2. Read the global and then set the global with new value.
I know option 2 is more efficient. But does option 1 takes twice time as option 2 or just slightly more time than option 2 since it operate ones in cached data?
Thanks a lot.