Windows 10 Optimization: The untold story


For a few weeks, people in my house kept bugging me to fix our Internet problem. From time-to-time, devices were not able to connect. No eMail. No NetFlix. No Minecraft (this last one was devastating).

I tracked the issue down to my wireless router. The 4-5 year old device was extremely hot. There were 50+ devices connected to it!

After purchasing a new one, all of the connectivity issues went away. As I started looking at the features of the new router, I saw that there is a traffic monitor built-in. So, I turned it on.

The thing I find interesting with this graph at 3 AM.


There is a spike in the middle of the night. I tracked this over a few days and the spike consistently shows up. After doing some digging, it turns out that these spikes are my Windows 10 PCs and my Windows 7 Media Center PC doing their nightly updates.

This brings about an interesting point with regards to Windows 10 optimization. Although we said in Windows 10 Optimization Results blog that the optimizations gave us about a 20% boost in server density, what we have to remember is that many of the optimizations we implemented won’t be accounted for in the test time period.

Take the scheduled task “Customer Experience Improvement Program \ Consolidator” as an example. It runs every 6 hours starting at midnight. In order for this optimization to be reflected in our test results, the test must be run at one of the respective intervals. If my test only runs for 1 hour, there is a good probability I will not have a test running when this task is executing.

Many of the other scheduled tasks run at startup. Most performance tests I’ve seen only focus on the steady state, which means most of the startup scheduled tasks are also missed as part of the test.

So does this mean our 20% benefit for running the optimizations are false? Of course not, but it does indicate that over the course of a workday or workweek, the benefit might be larger than 20%.

But in the end, nothing will ever be better than a real-world comparison.

Daniel ()
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