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authorDave Barach <dave@barachs.net>2019-06-03 19:48:22 -0400
committerDamjan Marion <dmarion@me.com>2019-06-04 13:04:42 +0000
commitc602b384ac022f70690a3a7c711149f7cb63ad12 (patch)
treecad51d5702502d35c714b3a003d000ffe7aae4db /src/vlib/threads.h
parentc424de75e561b2197d29812b3900db58a06096d7 (diff)
sort worker-thread init functions in advance
Otherwise, all N worker threads try to sort the list at the same time: a good way to have a bad day. This approach performs *far* better than maintaing order by adding a spin-lock. By direct measurement w/ elog + g2: 11 threads execute the per-thread init function list in 22us, vs. 50ms with a CLIB_PAUSE() enabled spin-lock. Change-Id: I1745f2a213c0561260139a60114dcb981e0c64e5 Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vlib/threads.h')
-rw-r--r--src/vlib/threads.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/vlib/threads.h b/src/vlib/threads.h
index 5a295e03319..fc34074127f 100644
--- a/src/vlib/threads.h
+++ b/src/vlib/threads.h
@@ -206,6 +206,7 @@ u32 vlib_frame_queue_main_init (u32 node_index, u32 frame_queue_nelts);
void vlib_worker_thread_barrier_sync_int (vlib_main_t * vm,
const char *func_name);
void vlib_worker_thread_barrier_release (vlib_main_t * vm);
+void vlib_worker_thread_initial_barrier_sync_and_release (vlib_main_t * vm);
void vlib_worker_thread_node_refork (void);
static_always_inline uword