diff options
| author |   Julian Klaiber <julian@klaiber.me> | 2023-08-14 11:39:13 +0000 |
|---|---|---|
| committer |   Dave Wallace <dwallacelf@gmail.com> | 2023-08-21 13:03:07 +0000 |
| commit | e3ce81e56a425eecfc254314f4db1d1774eeba0f (patch) | |
| tree | dcb65a2e2e2f001a9041e1ada65585f8418ff07b | |
| parent | a3808ee5b276d0ad17f01eefc891d24cb49d703d (diff) | |
sr: SRv6 Path Tracing midpoint processing performance improvement
Moved the kernel call for the timestamp outside of the inner loop to improve the batch proccessing, and minimizing the kernel calls.
Type: improvement
Change-Id: I0245c223fc8a178724bb8c5df2b98083be046c26
Signed-off-by: Julian Klaiber <julian@klaiber.me>
| -rw-r--r-- | src/vnet/srv6/sr_pt_node.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/vnet/srv6/sr_pt_node.c b/src/vnet/srv6/sr_pt_node.c index 338ec49102c..fa8b1f69b57 100644 --- a/src/vnet/srv6/sr_pt_node.c +++ b/src/vnet/srv6/sr_pt_node.c @@ -108,6 +108,10 @@ VLIB_NODE_FN (sr_pt_node) u32 n_left_to_next; vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + // Getting the timestamp (one for each batch of packets) + timestamp_64_t t64 = {}; + unix_time_now_nsec_fraction (&t64.sec, &t64.nsec); + // Single loop for potentially the last three packets while (n_left_from > 0 && n_left_to_next > 0) { @@ -123,7 +127,6 @@ VLIB_NODE_FN (sr_pt_node) to_next += 1; n_left_from -= 1; n_left_to_next -= 1; - timestamp_64_t t64 = {}; b0 = vlib_get_buffer (vm, bi0); iface = vnet_buffer (b0)->sw_if_index[VLIB_TX]; @@ -132,7 +135,6 @@ VLIB_NODE_FN (sr_pt_node) { en0 = vlib_buffer_get_current (b0); ip0 = (void *) (en0 + 1); - unix_time_now_nsec_fraction (&t64.sec, &t64.nsec); pt_midpoint_processing (vm, node, b0, ip0, ls, t64); pt_behavior = PT_BEHAVIOR_MID; } |