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 f5ea79c..6a3cd39 100644 (file)
--- 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;