Date: Thu, 25 Mar 2004 00:40:16 -0800 (PST) From: Artis Caune <artis@fbsd.lv> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/64690: rl device with polling enabled generates ~600000 outgoing "hidden" packets Message-ID: <200403250840.i2P8eGpO004072@www.freebsd.org> Resent-Message-ID: <200403250850.i2P8oJrk012829@freefall.freebsd.org>
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>Number: 64690
>Category: misc
>Synopsis: rl device with polling enabled generates ~600000 outgoing "hidden" packets
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Mar 25 00:50:19 PST 2004
>Closed-Date:
>Last-Modified:
>Originator: Artis Caune
>Release: 5.2.1, 4.9
>Organization:
>Environment:
FreeBSD fbsd.lv 5.2.1-RELEASE-p3 FreeBSD 5.2.1-RELEASE-p3 #0: Thu Mar 18 13:01:46 EET 2004 root@fbsd.lv:/usr/obj/usr/src/sys/KERNEL i386
>Description:
with polling enabled:
~16% interupts
'netstat -w1' show about 600000 outgoing packets
tcpdump is quiet
with polling disabled:
CPU is idle
'netstat -w1' show only some outgoing packets
tcpdump is also quiet ;-)
this is only for outgoing packets, incoming packets
works as expected.
same problem on 5.2.1 and 4.9
>How-To-Repeat:
get rl nic, recompile kernel with polling enabled, and watch:
top -u
netstat -w1
netstat -in
tcpdump -n -i rl0
>Fix:
disable polling:
sysctl kern.polling.enable=0
>Release-Note:
>Audit-Trail:
>Unformatted:
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