PerformanceGetting started4 min read
Profiling an iPhone when you do not have a Mac
Instruments is macOS-only and wants your project open. What is actually available to a Windows or Linux team that needs to know 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 tells you nothing, how to read a dip against CPU, GPU and memory, and the five causes that account for most mobile stutter.
EnergyPerformance3 min read
Turning a battery complaint into evidence
"Your app drains my battery" arrives with no timestamps and no reproduction. A method for finding out whether it is true, and what is actually 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 the 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 somebody else's app. What that does to your measurements, and how to attribute cost to the right process.