On 27-Feb-18 2:46 PM, Olivier Matz wrote:
The management threads must not bother the dataplane or service cores.
Set the affinity of these threads accordingly.
Signed-off-by: Olivier Matz <olivier.m...@6wind.com>
---
<...>
+ set_affinity = 0;
+ CPU_ZERO(&cpuset);
+ for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
+ if (eal_cpu_detected(lcore_id) &&
+ rte_lcore_has_role(lcore_id, ROLE_OFF)) {
+ CPU_SET(lcore_id, &cpuset);
+ set_affinity = 1;
+ }
+ }
+ if (set_affinity) {
+ ret = pthread_setaffinity_np(*thread, sizeof(cpuset), &cpuset);
+ if (ret < 0)
+ goto fail;
+ }
Hi Olivier,
Please correct me if i'm wrong here, but if all detected cores are busy
doing something (such as would be the case if DPDK is run without a
coremask specified), affinity is not set? Maybe set it to master lcore
instead (perhaps unconditionally - we usually recommend not using master
lcore for anything important - perhaps setting it to master core always
would be better, instead of trying to find unused lcores)?
--
Thanks,
Anatoly
