anchao commented on PR #7920:
URL: https://github.com/apache/nuttx/pull/7920#issuecomment-1357410744

   > @anchao
   > 
   > I noticed that `iperf -s` performance with `qemu-armv8a:netnsh_smp` is not 
so good compared to the latest upstream.
   
   @masayuki2009 ,
   
   I can not reproduce this issue on my local test, could you please check 
further which patch causing this issue?
   It may be that the cache miss causes the performance to deteriorate.
   
   ```
   00000000402d6df8 B g_iob_freelist
   00000000402d6e00 b g_iob_pool
   00000000402d7400 B g_iob_freeqlist
   00000000402d7408 b g_iob_qpool
   00000000402d7808 B g_iob_qcommitted
   00000000402d7810 B g_iob_committed
   00000000402d7818 b g_iob_buffer
   ```
   


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