From 687c88bea07d535440bd6680c363a86d25a94e6c Mon Sep 17 00:00:00 2001
From: Gunnar Beutner <gunnar.beutner@netways.de>
Date: Fri, 15 Nov 2013 14:04:03 +0100
Subject: [PATCH] Don't kill too many worker threads at once.

Refs #5050
---
 lib/base/threadpool.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/base/threadpool.cpp b/lib/base/threadpool.cpp
index 1e184c3ba..91facda70 100644
--- a/lib/base/threadpool.cpp
+++ b/lib/base/threadpool.cpp
@@ -253,6 +253,10 @@ void ThreadPool::ManagerThreadProc(void)
 				if (alive + tthreads < 8)
 					tthreads = 8 - alive;
 
+				/* Don't kill more than 8 threads at once. */
+				if (tthreads < -8)
+					tthreads = -8;
+
 				/* Spawn more workers if there are outstanding work items. */
 				if (tthreads > 0 && pending > 0)
 					tthreads = (Utility::GetTime() - Application::GetStartTime() < 300) ? 128 : 8;