is commitGraph useful on the server side?

[Konstantin Ryabitsev]

Hi, all:

I've read the docs on commitGraph and it's not 100% clear to me if 
turning it on and generating commit graphs would be useful on the 
server-side. I know it's going to be enabled by default and 
automatically generated whenever "git gc" runs, so I'm trying to figure 
out if it'll be useful for git-daemon operations.

Thanks in advance for your help.

Best,
-K