device polling and high load averages
peceka
peceka at gmail.com
Tue Sep 27 04:02:54 PDT 2005
Witaj Glenn,
W Twoim liście datowanym 27 września 2005 (12:14:25) można przeczytać:
> At 02:41 AM 9/27/2005, Vlad GALU wrote:
>>On 9/27/05, peceka <peceka at gmail.com> wrote:
>> > Hi,
>> >
>> > I've got:
>> > fw3# uname -r
>> > 5.4-RELEASE-p7
>> >
>> > in my kernel config i've set:
>> > options HZ=1000
>> > options DEVICE_POLLING
>> >
>> > fw3# cat /etc/rc.conf | grep ifconfig
>> > ifconfig_em0="inet 192.168.1.251 netmask 255.255.255.0 polling"
>> >
>> > fw3# cat /etc/sysctl.conf | grep poll
>> > kern.polling.enable=1
>> > kern.polling.idle_poll=1
>> >
>> > And all the time i've got:
>> > fw3# uptime
>> > 11:22AM up 1:59, 1 user, load averages: 1.00, 1.00, 0.96
>> >
>> > from top:
>> > last pid: 88131; load averages: 1.00, 1.00, 0.96
>> > 24 processes: 1 running, 23 sleeping
>> > CPU states: 0.0% user, 0.0% nice, 99.2% system, 0.8%
>> interrupt, 0.0% idle
>> >
>> > But this machine do nothing, just pure FBSD system. So why there is
>> > such high load aver.?
>> >
>>
>> Because of kern.polling.idle_poll.
> and a load average of 1 isn't exactly "high" either...
But for machine which does nothing?
CPU: Intel(R) Pentium(R) 4 CPU 3.20GHz (3200.13-MHz 686-class CPU)
real memory = 1341063168 (1278 MB)
What to do with kern.polling.idle_poll? It is needed to be set to 1?
What does this do?
Best regards,
p.
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