From f6113264f4fdae30528dfc5f0f5867faf0a667ba Mon Sep 17 00:00:00 2001
From: Harshavardhana <harsha@minio.io>
Date: Mon, 21 Mar 2022 19:05:04 -0700
Subject: [PATCH] add detection for GOMAXPROCS < NumCPU

---
 cmd/server-main.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/cmd/server-main.go b/cmd/server-main.go
index c299aae22..e99e41790 100644
--- a/cmd/server-main.go
+++ b/cmd/server-main.go
@@ -28,6 +28,7 @@ import (
 	"math/rand"
 	"os"
 	"os/signal"
+	"runtime"
 	"strings"
 	"sync"
 	"syscall"
@@ -453,6 +454,12 @@ func serverMain(ctx *cli.Context) {
 		logger.Info(color.RedBold("WARNING: Detected Linux kernel version older than 4.0.0 release, there are some known potential performance problems with this kernel version. MinIO recommends a minimum of 4.x.x linux kernel version for best performance"))
 	}
 
+	maxProcs := runtime.GOMAXPROCS(0)
+	cpuProcs := runtime.NumCPU()
+	if maxProcs < cpuProcs {
+		logger.Info(color.RedBold("WARNING: Detected GOMAXPROCS(%d) < NumCPU(%d), please make sure to provide all PROCS to MinIO for optimal performance", maxProcs, cpuProcs))
+	}
+
 	// Configure server.
 	handler, err := configureServerHandler(globalEndpoints)
 	if err != nil {