Concurrent instances of InstaDMG

[bw38]

Is it possible to run concurrent instances of InstaDMG? If yes, any pros or cons to be aware of?

[Allister Banks]

Due to the lack of parallelism in the underlying frameworks(installer and diskutil), it is not recommended.

However, InstaUp2Date specifically acknowledges this common need, so you can just chain all your catalogs together when you run the command to have them built one after the other(in serial).

Hope that helps, Allister

[larkost]

Actualy, the installer works just fine in parallel in normal cases. The reason you can’t have multiple concurrent InstaDMG processes is that we have to cheat a bit to get more instlalers to work and so put one of the background daemons in a chroot jail that focuses on the location of one install.

But there really would be little-to-no advantage in having 2 simultanious installers unless you could set them up to use completely different disks. InstaDMG (as with most installers) is almost completly I/O bound. If you are looking to speed things up, then get faster disks, and use the ‘-t’ option to split the process between two disks (much faster, but must be seperate disks rather than partions).

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