OrganizationServiceContext performance in MS Dynamic CRM 2013

The OrganizationServiceContext has a SaveChanges method that essentially does what it says on tin, namely the changes on the objects back to the database.

I've never used this method, preferring to use the regular Update method  on the IOrganizationService instead, but last week I had a moment of doubt, what if it is faster, what if it's multi-threaded, so I decided to run some tests to see whether there was any performance difference, spoiler alert: There wasn't

The tests consisted of the update of a three fields on the account entity for 2000 accounts and were run from an idle CRM server to minimize the influence of network traffic.

Results shown below are for the average of the three runs I did, except for the parallel version, using Parallel.ForEach, where it shows the single run I did.

OrganizationServiceContext	IOrganizationService	IOrganizationService (Parallel)
126.7 s	130.1 s	49.6 s

My fears were unfounded and the SaveChanges method, while slightly faster in these tests, does not seem to be appreciatively faster.

The difference is less than 3% and the slowest run using the OrganizationServiceContext was basically the same as the fastest with IOrganizationService : ~129 s

Housework

Over the past three and half months my lovely girlfriend has been suffering from terrible eczema, so she's basically not been helping much with the household chores, which is why I've been looking at how long I've spend doing housework everyday.

I have been measured how long I spent doing work and what sort of work it was. The measurements almost certainly an underestimate as I've probably missed little tasks here and there, e.g. cleaning up a spill or any such ad hoc task.

I've broken down the tasks in three categories: Cooking, Cleaning and Miscellaneous.

The first two are self explanatory, although it's worth mentioning that when it comes to cooking I have only counted the preparation time, except for when the cooking time was so short that it would not really allow me to do anything else, in practice this only has significant a bearing in Sundays figures as we normally have pancakes, french toast or eggs Benedict for breakfast.

Miscellaneous is anything that is not cooking or cleaning, e.g. tidying up, putting the washing away, etc..

We live in a, small?, two bedroom apartment (about 60 m²) and have no children or pets, don't eat out much (twice a month since the data keeping started) and mostly cook from scratch, so without further ado, these are the figures:

Total:

As a percentage: