[GitHub] [nuttx] xiaoxiang781216 commented on pull request #10605: Try to implement fair spinlock

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xiaoxiang781216 commented on PR #10605:
URL: https://github.com/apache/nuttx/pull/10605#issuecomment-1722279026

   > > > > You should try to stress it more to see if you don't hit any 
dead-locking on one cpu, process timing is important, so try to process heavy / 
greedy calls in each context, like allocating, read-write file, socket streams 
(triggering nasty interrupts in the middle), leaking memory on purpose, calls 
to getpid and alike, anything that is known to be resource system intensive.
   > > > 
   > > > 
   > > > I have two question:
   > > > ```
   > > > 1. mem allocating and  read-write file seems to use mutex, is it means 
that I have to modify these to use fair spinlock ?
   > > > 
   > > > 2. How can I test performance, can I test it on qemu? I have no 
physical board.
   > > > ```
   > > > 
   > > > 
   > > >     
   > > >       
   > > >     
   > > > 
   > > >       
   > > >     
   > > > 
   > > >     
   > > >   
   > > > Could you explain more detail?
   > > 
   > > 
   > > I think you can use QEMU or even the SIM on Linux, but you will need to 
add some instrumentation to confirm everything is working as expected.
   > 
   > I try following 
[doc](https://nuttx.apache.org/docs/latest/guides/tasktraceuser.html) to enable 
INSTRUMENTATION. But the result shows <img alt="image" width="1440" 
src="https://user-images.githubusercontent.com/33004323/268450133-e18063b3-1c0d-45b0-bea2-662dc993d776.png";>
   > 
   > This result is different from what I excepted. Is the reason is encode my 
shell and ash?
   
   You need redirect the output to file and open it with 
https://ui.perfetto.dev/ or https://eclipse.dev/tracecompass/.


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