Why DevTools throttling options are not changing my Lighthouse performance?
Every resource I can find about why Lighthouse performance scores are vastly different than desktop says it's because the bandwidth/throttling is set to 3G (still?), but changing the throttling settings doesn't change the performance rating for me. Am I using it wrong?
In the Lighthouse tab I select DevTools throttling (advanced):
There are no further settings after selecting the option, so I am presuming it uses whatever I have set in the Network tab, which is set for no throttling:
My other throttling options also do not affect the performance rating.
Could this be a browser bug?
Lighthouse has changed with the Update on august 2022. I found that they replaced the noThrottling option, with advanced Throttling. Unforgently the advanced Throttling setting will only affect the Trace display and not the performance score, as i understand it. THUS THE SCORE WILL ALLWAYS be affected by the simulated Throttling. Terrible product policy...
Lighthouse manual says:
The Lighthouse panel has a simplified throttling setup:
Simulated throttling remains the default setting. This matches the setup of PageSpeed Insights and the Lighthouse CLI default, maintaining cross-tool consistency.
If you click the View Original Trace button, the trace values will not match up with Lighthouse's metric results, as the original trace is prior to the simulation.
Applied throttling is available within the Lighthouse panel settings (⚙): uncheck the Simulated throttling checkbox.
In this mode, the performance data seen after clicking the View Trace button will match Lighthouses's numbers.
Find the documentation here:
- How to Implement an object pool in Java that does not create garbage as it grows?
- Performance degrade on JSObject after 2^23 items
- Most elegant way to find node's predecessors with networkX
- Why is bytes(lst) slower than bytearray(lst)?
- Initiate all potential props of the object right away or as you go?
- Maximizing Efficiency of Collatz Conjecture Program Python
- Making the Android emulator run faster
- Powershell version of cut -d is very slow on large files, am I missing the fast way to do it?
- Java foreach efficiency
- Why the use of name arguments in a function actually generate more code?
- Which bitset implementation should I use for maximum performance?
- Is there any performance benefit in using const or readonly modifiers on fields in c#?
- Producer consumer queue best practices and performance
- Does Java have any equivalent to C++ string_view?
- Efficient calculation of Fibonacci series
- Does the more time a function takes means its runtime complexity is larger?
- Improve INSERT-per-second performance of SQLite
- CASE vs Multiple UPDATE queries for large data sets - Performance
- how to tune out of memory exception spark
- Why does JIT order affect performance?
- Can some explain the performance behavior of the following memory allocating C program?
- How to debug a database query for performance
- Comparing two byte arrays in .NET
- Algorithm to find all the exact divisors of a given integer
- improve layout performance
- Why is processing a sorted array faster than processing an unsorted array?
- It is more efficient to use if-return-return or if-else-return?
- Bit Aligning for Space and Performance Boosts
- Terrific performance difference between almost equal methods
- Why does this simple and small Java code runs 30x faster in all Graal JVMs but not on any Oracle JVMs?