From 9ada1609d84cc954c9235e6bd056850c10dfccc5 Mon Sep 17 00:00:00 2001 From: Xavier Simonart Date: Fri, 28 Jun 2019 15:47:55 +0200 Subject: Add option to change scheduler policy to SCHED_RR and increase scheduler priority Set "realtime scheduling=yes" option to change Linux scheduler policy to SCHED_RR and increase the priority to the maximum possible for the policy. Change-Id: I3ecef5cbc3816cf2b56364bb4e806ae5ac093c23 Signed-off-by: Xavier Simonart --- VNFs/DPPD-PROX/thread_generic.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'VNFs/DPPD-PROX/thread_generic.c') diff --git a/VNFs/DPPD-PROX/thread_generic.c b/VNFs/DPPD-PROX/thread_generic.c index f596bf25..14fb943e 100644 --- a/VNFs/DPPD-PROX/thread_generic.c +++ b/VNFs/DPPD-PROX/thread_generic.c @@ -14,6 +14,7 @@ // limitations under the License. */ +#include #include #include @@ -83,6 +84,26 @@ static uint64_t tsc_ctrl(struct lcore_cfg *lconf) return lconf->ctrl_timeout; } +static void set_thread_policy(int policy) +{ + struct sched_param p; + int ret, old_policy, old_priority; + + memset(&p, 0, sizeof(p)); + ret = pthread_getschedparam(pthread_self(), &old_policy, &p); + if (ret) { + plog_err("Failed getting thread policy: %d\n", ret); + return; + } + old_priority = p.sched_priority; + p.sched_priority = sched_get_priority_max(policy); + ret = pthread_setschedparam(pthread_self(), policy, &p); + if (ret) { + plog_err("Failed setting thread priority: %d", ret); + } else + plog_info("Thread policy/priority changed from %d/%d to %d/%d\n", old_policy, old_priority, policy, p.sched_priority); +} + int thread_generic(struct lcore_cfg *lconf) { struct task_base *tasks[MAX_TASKS_PER_CORE]; @@ -99,6 +120,9 @@ int thread_generic(struct lcore_cfg *lconf) }; uint8_t n_tasks_run = lconf->n_tasks_run; + if (lconf->flags & LCONF_FLAG_SCHED_RR) + set_thread_policy(SCHED_RR); + if (lconf->period_func) { tsc_tasks[2].tsc = cur_tsc + lconf->period_timeout; tsc_tasks[2].tsc_task = tsc_period; -- cgit 1.2.3-korg