Module Name: src
Committed By: jdolecek
Date: Fri Apr 24 13:47:50 UTC 2020
Modified Files:
src/share/man/man4: options.4
Log Message:
actually MBUFTRACE does splvm(), kpreempt_disable()/enable() and percpu,
this has non-slight overhead - amend documentation to stop claiming
the overhead is slight
adresses PR port-xen/50290
To generate a diff of this commit:
cvs rdiff -u -r1.510 -r1.511 src/share/man/man4/options.4
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/share/man/man4/options.4
diff -u src/share/man/man4/options.4:1.510 src/share/man/man4/options.4:1.511
--- src/share/man/man4/options.4:1.510 Sat Apr 4 15:32:42 2020
+++ src/share/man/man4/options.4 Fri Apr 24 13:47:50 2020
@@ -1,4 +1,4 @@
-.\" $NetBSD: options.4,v 1.510 2020/04/04 15:32:42 jdolecek Exp $
+.\" $NetBSD: options.4,v 1.511 2020/04/24 13:47:50 jdolecek Exp $
.\"
.\" Copyright (c) 1996
.\" Perry E. Metzger. All rights reserved.
@@ -1965,8 +1965,9 @@ This option assumes the presence of
.Em pseudo-device ipfilter .
.It Cd options MBUFTRACE
This option can help track down mbuf leaks.
-When enabled, mbufs are tagged with the devices and protocols using them,
-which slightly decreases network performance.
+When enabled, mbufs are tagged with the devices and protocols using them.
+This can significantly decrease network performance, particularly
+on MP systems.
This additional information can be viewed with
.Xr netstat 1 :
.Dl Ic netstat Fl mssv
