From: Mike Brady <4265913+mikebrady@users.noreply.github.com>
Date: Mon, 6 Dec 2021 18:48:38 +0000 (+0000)
Subject: Continue to experiment with late follow-up correction weights.
X-Git-Tag: 1.2~68
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=baf43f0bcc9fc68abbe5307aa4b338d22f7ba026;p=thirdparty%2Fnqptp.git

Continue to experiment with late follow-up correction weights.
---

diff --git a/nqptp-message-handlers.c b/nqptp-message-handlers.c
index fafb3a4..9eeaeed 100644
--- a/nqptp-message-handlers.c
+++ b/nqptp-message-handlers.c
@@ -388,9 +388,13 @@ void handle_follow_up(char *buf, __attribute__((unused)) ssize_t recv_len,
 
       if (jitter > -10000000) {
         // we take any positive or a limited negative jitter as a sync event
-        if (jitter < 0)
-          offset = clock_private_info->previous_offset + jitter / 32;
-        else if (clock_private_info->follow_up_number <
+        if (jitter < 0) {
+          if (clock_private_info->follow_up_number <
+                 (5 * 8)) // at the beginning (8 samples per second)
+            offset = clock_private_info->previous_offset + jitter / 16;
+          else
+            offset = clock_private_info->previous_offset + jitter / 16;            
+        } else if (clock_private_info->follow_up_number <
                  (5 * 8)) // at the beginning (8 samples per second)
           offset =
               clock_private_info->previous_offset + jitter / 2; // accept positive changes quickly