From 95e660f3f43ac33350039261caa927eca6cc9a7b Mon Sep 17 00:00:00 2001
From: Lynn <zimu_xia@126.com>
Date: Fri, 10 Feb 2023 12:15:59 +0800
Subject: [PATCH] util/gpool/spmc: add a sleep to a simple `for` (#41240)

close pingcap/tidb#41205
---
 util/gpool/spmc/spmcpool.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/util/gpool/spmc/spmcpool.go b/util/gpool/spmc/spmcpool.go
index d1a3bbb80c4aa..8afdf9db0c253 100644
--- a/util/gpool/spmc/spmcpool.go
+++ b/util/gpool/spmc/spmcpool.go
@@ -249,6 +249,7 @@ func (p *Pool[T, U, C, CT, TF]) ReleaseAndWait() {
 		if p.Running() == 0 && p.heartbeatDone.Load() && p.waitingTask.Load() == 0 {
 			return
 		}
+		time.Sleep(5 * time.Millisecond)
 	}
 }