diff options
| author |   Florin Coras <fcoras@cisco.com> | 2023-08-27 23:14:50 -0700 |
|---|---|---|
| committer |   Dave Wallace <dwallacelf@gmail.com> | 2023-09-01 02:31:42 +0000 |
| commit | da652cc46604f5c98736404a2342ac3a178240e7 (patch) | |
| tree | 577f3bfcefdcdfd34a1983ef371c745e622abdf8 | |
| parent | f234b0d4626d7e686422cc9dfd25958584f4931e (diff) | |
vcl: set min threshold for tx ntf
Make sure there's at least 3% space in the tx fifo before notifying vcl
of a tx event. The threshold is somewhat arbibrary but for a 4M fifo, it
now means that ~120kB of space should be available.
Should help minimize the amount of tx notifications generated by
session layer when apps are faster.
Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I11dd0931dca8f989000a2481f1f495bd267589c4
| -rw-r--r-- | src/vcl/vcl_private.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h index 8345e34e0c1..41a11b7123f 100644 --- a/src/vcl/vcl_private.h +++ b/src/vcl/vcl_private.h @@ -675,7 +675,11 @@ vcl_session_add_want_deq_ntf (vcl_session_t *s, svm_fifo_deq_ntf_t evt) { svm_fifo_t *txf = vcl_session_is_ct (s) ? s->ct_tx_fifo : s->tx_fifo; if (txf) - svm_fifo_add_want_deq_ntf (txf, evt); + { + svm_fifo_add_want_deq_ntf (txf, evt); + /* Request tx notification only if 3% of fifo is empty */ + svm_fifo_set_deq_thresh (txf, 0.03 * svm_fifo_size (txf)); + } } static inline void |