From: Michael Tremer <michael.tremer@ipfire.org>
Date: Wed, 18 Mar 2026 15:03:17 +0000 (+0000)
Subject: graphs: processor: Use NaN-safe addition
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0cee01a613b27b8b26fd5a234dcb7c8873a7d2f8;p=telemetry.git

graphs: processor: Use NaN-safe addition

This is needed so that we can import incomplete data from collectd where
guest and guest_nice don't exist. We will just treat those values as
zero.

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

diff --git a/src/daemon/graphs/processor.c b/src/daemon/graphs/processor.c
index 74f9079..8eb0d91 100644
--- a/src/daemon/graphs/processor.c
+++ b/src/daemon/graphs/processor.c
@@ -40,7 +40,8 @@ static int processor_render(td_ctx* ctx, td_graph* graph,
 
 	// Add up all used cycles
 	r = td_args_push(args,
-		"CDEF:usage=user,nice,+,sys,+,wait,+,irq,+,softirq,+,steal,+,guest,+,guest_nice,+");
+		"CDEF:usage=user,nice,ADDNAN,sys,ADDNAN,wait,ADDNAN,irq,ADDNAN,"
+		"softirq,ADDNAN,steal,ADDNAN,guest,ADDNAN,guest_nice,ADDNAN");
 	if (r < 0)
 		return r;