From: Michael Tremer <michael.tremer@ipfire.org>
Date: Fri, 3 Oct 2025 11:06:34 +0000 (+0000)
Subject: graph: Measure the time it takes to generate a graph
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d9dc59e6502a134349f44902d65c69ced82c55b5;p=collecty.git

graph: Measure the time it takes to generate a graph

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

diff --git a/src/daemon/graph.c b/src/daemon/graph.c
index 5cbb5e3..92f0889 100644
--- a/src/daemon/graph.c
+++ b/src/daemon/graph.c
@@ -213,6 +213,10 @@ int collecty_graph_render(collecty_graph* self, const char* object,
 	double ymax = 0;
 	int r;
 
+	// Measure the runtime
+	clock_t t_start = 0;
+	clock_t t_end = 0;
+
 	// Log action
 	DEBUG(self->ctx, "Rendering %s...\n", collecty_graph_get_name(self));
 
@@ -220,6 +224,14 @@ int collecty_graph_render(collecty_graph* self, const char* object,
 	if (!self->impl->render)
 		return -ENOTSUP;
 
+	// Store the start time
+	t_start = clock();
+	if (t_start < 0) {
+		ERROR(self->ctx, "clock() has failed: %m\n");
+		r = -errno;
+		goto ERROR;
+	}
+
 	// Open a file handle to the output buffer
 	f = open_memstream(buffer, length);
 	if (!f) {
@@ -332,8 +344,17 @@ int collecty_graph_render(collecty_graph* self, const char* object,
 		goto ERROR;
 	}
 
+	// Store the end time
+	t_end = clock();
+	if (t_end < 0) {
+		ERROR(self->ctx, "clock() has failed: %m\n");
+		r = -errno;
+		goto ERROR;
+	}
+
 	// Log action
-	DEBUG(self->ctx, "Rendered graph %s:\n", collecty_graph_get_name(self));
+	DEBUG(self->ctx, "Rendered graph %s in %.2fms:\n",
+		collecty_graph_get_name(self), (double)(t_end - t_start) / CLOCKS_PER_SEC * 1000);
 	DEBUG(self->ctx, "    size     : %d byte(s)\n", ftell(f));
 	DEBUG(self->ctx, "    width    : %d\n", w);
 	DEBUG(self->ctx, "    height   : %d\n", h);