Try this one 
https://github.com/apache/logging-log4j2/blob/2.25.x/log4j-perf-test/src/main/java/org/apache/logging/log4j/perf/jmh/ThreadContextVsScopedContextBenchmark.java

Ralph

> On Aug 14, 2024, at 7:23 AM, John Engebretson <jengebr...@gmail.com> wrote:
> 
>  Ralph, I get a 404 on that link to your code, could you please verify the
> link is good?
> 
> FWIW:
> - the unit test on StringArrayThreadContextMap thoroughly tests puts
> (verified by gets).  I won't rule out a missed case, of course.
> - the JMH test on the underlying datastructure (UnmodifiableArrayBackedMap)
> is attached at https://github.com/apache/logging-log4j2/issues/2319, as
> well as a description of the performance characteristics.
> 
>  I'd love to hear more about any conflicting findings, and will dive in
> once I get your code.
>  Thanks!  :)
>    John
> 
> 
> 
> On Tue, Aug 13, 2024 at 5:07 PM Ralph Goers <ralph.go...@dslextreme.com>
> wrote:
> 
>> The benchmark code I used was
>> https://github.com/apache/logging-log4j2/blob/feature/move-thread-context/log4j-perf-test/src/main/java/org/apache/logging/log4j/perf/jmh/ThreadContextVsScopedContextBenchmark.java
>> 
>> Ralph
>> 
>>> On Aug 13, 2024, at 3:00 PM, Ralph Goers <ralph.go...@dslextreme.com>
>> wrote:
>>> 
>>> Piotr, I am still concerned that you never looked into the issues I had
>> with StringArrayThreadContextMap. My performance tests were showing that it
>> was fast because it wasn’t actually setting values.
>>> 
>>> Ralph
>>> 
>>>> On Aug 13, 2024, at 12:43 PM, Piotr P. Karwasz <piotr.karw...@gmail.com>
>> wrote:
>>>> 
>>>> Hi John,
>>>> 
>>>> On Tue, 13 Aug 2024 at 21:10, John Engebretson <jengebr...@gmail.com>
>> wrote:
>>>>> HI - just curious when the updated ThreadContextMap will be available?
>>>>> The latest release is 2.23.1, over five months ago.
>>>> 
>>>> We just finished a long series of documentation tasks that kept us
>>>> occupied for the past since May[1].
>>>> 
>>>> I will be able to concentrate on cutting this almost mythical 2.24.0
>>>> release in the next few weeks.
>>>> 
>>>> Piotr
>>>> 
>>>> [1] https://github.com/apache/logging-log4j2/issues/2542
>>> 
>> 
>> 

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