From: sthen <sthen@openbsd.org>
Date: Wed, 13 Apr 2022 10:08:10 +0000 (+0000)
Subject: Use a simpler "formula" to decide a default kern.maxthread value;
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=8458ad5d772e57b72cb636b6b463f8ad38873256;p=openbsd

Use a simpler "formula" to decide a default kern.maxthread value;
just 2*NPROCESS rather than NPROCESS+8*MAXUSERS. Results in a slightly
higher maxthread value - the previous value was fairly likely to be
exceeded on a system running a couple of heavily threaded processes.

>                             previous        new
> MAXUSERS    NPROCESS        maxthread       (2*NPROCESS)
> 80          1310            1950            2620
> 64          1054            1566            2108
> 32          542             798             1084

ok kettenis@
---

diff --git a/sys/conf/param.c b/sys/conf/param.c
index f5ea79cfd21..6a3cd398c55 100644
--- a/sys/conf/param.c
+++ b/sys/conf/param.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: param.c,v 1.46 2021/01/13 16:28:50 cheloha Exp $	*/
+/*	$OpenBSD: param.c,v 1.47 2022/04/13 10:08:10 sthen Exp $	*/
 /*	$NetBSD: param.c,v 1.16 1996/03/12 03:08:40 mrg Exp $	*/
 
 /*
@@ -81,7 +81,7 @@ int	utc_offset = 0;
 #define	NVNODE (NPROCESS * 2 + NTEXT + 100)
 int	initialvnodes = NVNODE;
 int	maxprocess = NPROCESS;
-int	maxthread = NPROCESS + 8 * MAXUSERS;
+int	maxthread = 2 * NPROCESS;
 int	maxfiles = 5 * (NPROCESS + MAXUSERS) + 80;
 long	nmbclust = NMBCLUSTERS;