diff options
| author |   Florin Coras <fcoras@cisco.com> | 2019-06-05 10:47:16 -0700 |
|---|---|---|
| committer |   Dave Barach <openvpp@barachs.net> | 2019-06-06 19:19:04 +0000 |
| commit | e003a1b9ffc51d16a0a4c617e173168973f0fe37 (patch) | |
| tree | 05a2cb7fabc68482415a40e0df9660640d753c1a /src | |
| parent | 922077505b43f9560550653f530cf93acc81044d (diff) | |
vcl: cap epoll dequeue batch size to max events
Type: fix
Change-Id: Ia9be1413cf9423552137885521cefdbecc3e5df5
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Ping Yu <ping.yu@intel.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/vcl/vppcom.c | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c index 1641beee9f6..8b81e260298 100644 --- a/src/vcl/vppcom.c +++ b/src/vcl/vppcom.c @@ -44,13 +44,13 @@ vcl_wait_for_segment (u64 segment_handle) } static inline int -vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq) +vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq, u32 n_max_msg) { svm_msg_q_msg_t *msg; u32 n_msgs; int i; - n_msgs = svm_msg_q_size (mq); + n_msgs = clib_min (svm_msg_q_size (mq), n_max_msg); for (i = 0; i < n_msgs; i++) { vec_add2 (wrk->mq_msg_vector, msg, 1); @@ -764,7 +764,7 @@ vcl_flush_mq_events (void) mq = wrk->app_event_queue; svm_msg_q_lock (mq); - vcl_mq_dequeue_batch (wrk, mq); + vcl_mq_dequeue_batch (wrk, mq, ~0); svm_msg_q_unlock (mq); for (i = 0; i < vec_len (wrk->mq_msg_vector); i++) @@ -1895,7 +1895,7 @@ vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq, } } } - vcl_mq_dequeue_batch (wrk, mq); + vcl_mq_dequeue_batch (wrk, mq, ~0); svm_msg_q_unlock (mq); for (i = 0; i < vec_len (wrk->mq_msg_vector); i++) @@ -2479,7 +2479,8 @@ vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq, } } } - vcl_mq_dequeue_batch (wrk, mq); + ASSERT (maxevents > *num_ev); + vcl_mq_dequeue_batch (wrk, mq, maxevents - *num_ev); svm_msg_q_unlock (mq); handle_dequeued: @@ -2487,10 +2488,7 @@ handle_dequeued: { msg = vec_elt_at_index (wrk->mq_msg_vector, i); e = svm_msg_q_msg_data (mq, msg); - if (*num_ev < maxevents) - vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev); - else - vec_add1 (wrk->unhandled_evts_vector, *e); + vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev); svm_msg_q_free_msg (mq, msg); } vec_reset_length (wrk->mq_msg_vector); @@ -2502,7 +2500,7 @@ static int vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events, int maxevents, u32 n_evts, double wait_for_time) { - double wait = 0, start = 0; + double wait = 0, start = 0, now; if (!n_evts) { @@ -2519,7 +2517,9 @@ vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events, if (wait == -1) continue; - wait = wait - (clib_time_now (&wrk->clib_time) - start); + now = clib_time_now (&wrk->clib_time); + wait -= now - start; + start = now; } while (wait > 0); @@ -2586,11 +2586,11 @@ vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events, events, &n_evts); if (n_evts == maxevents) { - i += 1; - break; + vec_delete (wrk->unhandled_evts_vector, i + 1, 0); + return n_evts; } } - vec_delete (wrk->unhandled_evts_vector, i, 0); + vec_reset_length (wrk->unhandled_evts_vector); } if (vcm->cfg.use_mq_eventfd) |