[dpdk-dev] Sharing Data structure between logical cores in DPDK- regarding

[Tom Barbette]

It depends on the datastructure.

If you use rte_hash, with the thread safety flags, it's safe.

In any case having a lot of cores accessing the same DS will lead to bad performance. You should try to have per-core data structures whenever possible.

Tom

________________________________________
De : dev <dev-bounces at dpdk.org> de la part de Perugu Hemasai Chandra Prasad <hemasaiperugu at 5g.iith.ac.in>
Envoyé : jeudi 5 décembre 2019 11:16
À : users at dpdk.org; dev at dpdk.org
Objet : [dpdk-dev] Sharing Data structure between logical cores in DPDK-        regarding

Hi All,
          I have a small doubt, can we share a data structure between
multiple logical cores in DPDK without locking? I have tested it by sharing
a small structure with two variable and incrementing them in all logical
cores. It ran smooth I didn't get any issue. But I doubt if we can run it
for long time with some huge data structure having many elements getting
accessed by multiple logical cores.
     Can anyone please clarify this.

Thanks and regards,
Hemasai.