From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Thu, 14 Mar 2024 14:37:15 +0000 (+0100)
Subject: ntp: avoid unnecessary restart of resolving round on refresh
X-Git-Tag: 4.6-pre1~34
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=863866354d058554e691959870770a8a07350431;p=thirdparty%2Fchrony.git

ntp: avoid unnecessary restart of resolving round on refresh

Don't call NSR_ResolveSources() when a resolving round is already
started. This cuts the number of calls of the system resolver made due
to the refresh command to half.
---

diff --git a/ntp_sources.c b/ntp_sources.c
index 1257f577..64d9a8b4 100644
--- a/ntp_sources.c
+++ b/ntp_sources.c
@@ -1056,7 +1056,10 @@ resolve_source_replacement(SourceRecord *record, int refreshment)
   us->address = *record->remote_addr;
 
   append_unresolved_source(us);
-  NSR_ResolveSources();
+
+  /* Don't restart resolving round if already running */
+  if (!resolving_source)
+    NSR_ResolveSources();
 }
 
 /* ================================================== */