Increase the number of arenas

[Veeravadivel Duraisamy]

Hi,

I am running my application on a 24 core machine and I have 108 threads. I see a slight increase in latency with jemalloc when compared to tcmalloc. The jemalloc man page says by default 24*4 arenas will be created. I would like to increase the number of arenas to 108. What should be the value that i set the env variable MALLOC_CONF to?

Thanks,
Veera.
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