On 10/22/2019 12:51 PM, Konstantin Ryabitsev wrote: > 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.
I've CC'd Taylor Blau for more information here. I'm biased, but I think the commit-graph is generally really good to have in almost all cases. I actually do not know of a good reason to _not_ have it. If you are managing reachability bitmaps, then most of the server-side stuff will use the bitmaps instead. However, creating those bitmaps will be slightly faster with the commit-graph. If you don't use bitmaps, then the commit-graph will help fetch negotiation and many other commit-walk experiences. If you have a lot of machinery around your server maintenance, then you can schedule commit-graph updates more frequently than bitmap computations, and you would get benefit by parsing commits faster in the zone "above" the bitmaps. Thanks, -Stolee