From: Michael Tremer <michael.tremer@ipfire.org>
Date: Fri, 28 Nov 2025 13:27:25 +0000 (+0000)
Subject: graphs: unbound: Add a memory usage graph
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ec344c542879ed363083a55f515bf79a06c07f9f;p=telemetry.git

graphs: unbound: Add a memory usage graph

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/daemon/colors.h b/src/daemon/colors.h
index b8f7148..6faaf30 100644
--- a/src/daemon/colors.h
+++ b/src/daemon/colors.h
@@ -93,6 +93,9 @@
 #define COLOR_DNS_INFRA			COLOR_GREY
 #define COLOR_DNS_RRSETS		COLOR_BLUE
 #define COLOR_DNS_MSGS			COLOR_GREEN
+#define COLOR_DNS_RPZ			COLOR_RED
+#define COLOR_DNS_ITERATOR		COLOR_ORANGE
+#define COLOR_DNS_VALIDATOR		COLOR_PINK
 
 // CPU Colors
 
diff --git a/src/daemon/graphs.c b/src/daemon/graphs.c
index e6253a4..c61dfeb 100644
--- a/src/daemon/graphs.c
+++ b/src/daemon/graphs.c
@@ -71,6 +71,7 @@ static const td_graph_impl* graph_impls[] = {
 	// Unbound
 	&unbound_cache_performance_graph,
 	&unbound_cache_usage_graph,
+	&unbound_memory_usage_graph,
 	&unbound_recursion_time_graph,
 
 	// Legacy
diff --git a/src/daemon/graphs/unbound.c b/src/daemon/graphs/unbound.c
index 33db5ab..0096179 100644
--- a/src/daemon/graphs/unbound.c
+++ b/src/daemon/graphs/unbound.c
@@ -132,6 +132,70 @@ const td_graph_impl unbound_cache_usage_graph = {
 	.upper_limit = LONG_MAX,
 };
 
+static int unbound_memory_usage_title(td_ctx* ctx, td_graph* graph,
+		const char* object, char* title, size_t length) {
+	return __td_string_set(title, length, _("DNS Memory Usage"));
+}
+
+static int unbound_memory_usage_render(td_ctx* ctx, td_graph* graph,
+		const td_graph_render_options* options, td_args* args, const char* object) {
+	int r;
+
+	// Load all sources
+	r = td_graph_require_source(graph, args, "unbound", NULL);
+	if (r < 0)
+		return r;
+
+	// Draw the stacked background first
+	DRAW_AREA_BACKGROUND(args, "mem_mod_respip",    NULL, COLOR_DNS_RPZ, 0);
+	DRAW_AREA_BACKGROUND(args, "mem_mod_validator", NULL, COLOR_DNS_VALIDATOR, STACKED);
+	DRAW_AREA_BACKGROUND(args, "mem_mod_iterator",  NULL, COLOR_DNS_ITERATOR, STACKED);
+	DRAW_AREA_BACKGROUND(args, "mem_cache_rrset",   NULL, COLOR_DNS_RRSETS, STACKED);
+	DRAW_AREA_BACKGROUND(args, "mem_cache_message", NULL, COLOR_DNS_MSGS, STACKED);
+
+	// Draw the area outlines afterwards
+	DRAW_AREA_OUTLINE_WITH_LABEL(args, "mem_mod_respip", NULL,
+		COLOR_DNS_RPZ, 0, _("Request Policy Zones"));
+	PRINT_CAMM(args, "mem_mod_respip", NULL, BYTES);
+
+	DRAW_AREA_OUTLINE_WITH_LABEL(args, "mem_mod_validator", NULL,
+		COLOR_DNS_VALIDATOR, STACKED, _("Validator"));
+	PRINT_CAMM(args, "mem_mod_validator", NULL, BYTES);
+
+	DRAW_AREA_OUTLINE_WITH_LABEL(args, "mem_mod_iterator", NULL,
+		COLOR_DNS_ITERATOR, STACKED, _("Iterator"));
+	PRINT_CAMM(args, "mem_mod_iterator", NULL, BYTES);
+
+	DRAW_AREA_OUTLINE_WITH_LABEL(args, "mem_cache_rrset", NULL,
+		COLOR_DNS_RRSETS, STACKED, _("RRSet Objects"));
+	PRINT_CAMM(args, "mem_cache_rrset", NULL, BYTES);
+
+	DRAW_AREA_OUTLINE_WITH_LABEL(args, "mem_cache_message", NULL,
+		COLOR_DNS_MSGS, STACKED, _("Message Objects"));
+	PRINT_CAMM(args, "mem_cache_message", NULL, BYTES);
+
+	PRINT_EMPTY_LINE(args);
+
+	// Header
+	PRINT_HEADER4(args, _("Current"), _("Average"), _("Minimum"), _("Maximum"));
+
+	return 0;
+}
+
+const td_graph_impl unbound_memory_usage_graph = {
+	.name    = "UnboundMemoryUsage",
+	.render  = unbound_memory_usage_render,
+	.title   = unbound_memory_usage_title,
+	.vlabel  = td_graph_vlabel_bytes,
+
+	// Flags
+	.flags   = TELEMETRY_GRAPH_REVERSE,
+
+	// Limits
+	.lower_limit = 0,
+	.upper_limit = LONG_MAX,
+};
+
 static int unbound_recursion_time_title(td_ctx* ctx, td_graph* graph,
 		const char* object, char* title, size_t length) {
 	return __td_string_set(title, length, _("DNS Recursion Time"));
diff --git a/src/daemon/graphs/unbound.h b/src/daemon/graphs/unbound.h
index 669e352..41cdc41 100644
--- a/src/daemon/graphs/unbound.h
+++ b/src/daemon/graphs/unbound.h
@@ -25,6 +25,7 @@
 
 extern const td_graph_impl unbound_cache_performance_graph;
 extern const td_graph_impl unbound_cache_usage_graph;
+extern const td_graph_impl unbound_memory_usage_graph;
 extern const td_graph_impl unbound_recursion_time_graph;
 
 #endif /* TELEMETRY_GRAPH_UNBOUND_H */