PerformanceGetting started4 min read
Profiling an iPhone when you do not have a Mac
Instruments runs only on macOS and needs your project open. What a team on Windows can use to find out why an app is slow on a real device.
PerformanceQA3 min read
Chasing frame drops on hardware you did not choose
Why an average FPS hides stutter, how to read a frame drop against CPU, GPU and memory, and the five causes behind most mobile stutter.
EnergyPerformance3 min read
Turning a battery complaint into evidence
"Your app drains my battery" arrives with no timestamps and no steps to reproduce. A method for checking whether it is true, and what is responsible.
MemoryPerformance4 min read
Is that a memory leak, or just a cache?
Reading a memory trend on a real device. Sawtooth versus staircase, what jetsam looks like from outside, and why a crash with no exception is a memory bug.
PerformanceApp data3 min read
Measuring a mini-program's performance, not its host
A mini-program runs inside another company's app. How that affects your measurements, and how to attribute cost to the right process.