Module Name: src
Committed By: manu
Date: Sat May 28 00:53:41 UTC 2022
Modified Files:
src/share/man/man4: wm.4
Log Message:
Document hw.wmX.txex_workqueue sysctl
To generate a diff of this commit:
cvs rdiff -u -r1.42 -r1.43 src/share/man/man4/wm.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/wm.4
diff -u src/share/man/man4/wm.4:1.42 src/share/man/man4/wm.4:1.43
--- src/share/man/man4/wm.4:1.42 Wed Feb 17 08:15:43 2021
+++ src/share/man/man4/wm.4 Sat May 28 00:53:41 2022
@@ -1,4 +1,4 @@
-.\" $NetBSD: wm.4,v 1.42 2021/02/17 08:15:43 knakahara Exp $
+.\" $NetBSD: wm.4,v 1.43 2022/05/28 00:53:41 manu Exp $
.\"
.\" Copyright 2002, 2003 Wasabi Systems, Inc.
.\" All rights reserved.
@@ -184,6 +184,16 @@ utility configures the adapter to receiv
.\" .Sh DIAGNOSTICS
.\" XXX to be done.
.Sh OPTIONS
+The driver default behavior is to handle packets in interrupt context,
+which reduces the CPU time available to user processes when under
+heavy nerwork load. The
+.Em hw.wmX.txrx_workqueue
+.Xr sysctl 8
+alters this behavior so that packets are handled by a kernel thread,
+which executes at a lower priority. This gives user processes more
+opportunity to be executed, at the exepense of network throughput.
+.Pp
+The following options can be set at build time:
.Bl -tag -width WM_RX_INTR_PROCESS_LIMIT_DEFAULT -offset 3n
.It Dv WM_RX_PROCESS_LIMIT_DEFAULT
The maximum number of received packets processed in each
@@ -247,7 +257,8 @@ to
.Xr mii 4 ,
.Xr netintro 4 ,
.Xr pci 4 ,
-.Xr ifconfig 8
+.Xr ifconfig 8 ,
+.Xr sysctl 8
.Sh HISTORY
The
.Nm
