Deployment spends a lot of time in the path() function.

[benjamin-heasly]

I noticed that deploying toolboxes can be slow. Even when the toolboxes are already up to date, adding them to the path can take a while.

I checked with the Matlab profiler on a usage that's typical for me: tbUse({'VirtualWorldColorConstancy', 'isetbio'}). About 85% of the time is spent on 16 calls to Matlab's path() function.

I'm not sure why path() is so slow.

Whatever the reason, we might be able to speed up deployments if we collect path entries during deployment, then apply them all in a single call to path().

[benjamin-heasly]

Here is a profiler screenshot.

[DavidBrainard]

Another thing that is slow is the 'reset','no-matlab' option.