From c821a61f0abc06eb5d87038e3f199808478e5b16 Mon Sep 17 00:00:00 2001
From: phantasia15 <omg.dog94@gmail.com>
Date: Thu, 24 Jun 2021 09:55:11 +0700
Subject: [PATCH] Correct planner's behaviour

---
 engine/planner.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/engine/planner.go b/engine/planner.go
index c6410790..2d3ae32a 100644
--- a/engine/planner.go
+++ b/engine/planner.go
@@ -75,8 +75,8 @@ func (p *planner) Plan(ctx context.Context) error {
 
 	ctx = logger.WithContext(ctx, log)
 
-	free := max(capacity-running-p.buffer, 0)
-	diff := serverDiff(pending, free, p.cap)
+	free := max(capacity-running, 0)
+	diff := serverDiff(pending+p.buffer, free, p.cap)
 
 	// if the server differential to handle the build volume
 	// is positive, we can reduce server capacity.