-----Original Message-----
From: Mao Shou Yan
Sent: 2005年8月11日 10:34
To: 'Dave+Seddon'
Subject: RE: Why Ierrs is so high?
I'm also using polling enable and set HZ to 10000, the CPU is p4 3.0G.
The system is 5.4 too.
My conf:
kern.polling.enable=1
kern.polling.burst_max=600
kern.polling.each_burst=10
And also gots lots of kern.polling.lost_polls and kern.polling.suspect.
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave+Seddon
Sent: 2005年8月11日 10:26
To: freebsd-net@freebsd.org
Subject: Re: Why Ierrs is so high?
Greetings,
Yeah I'd say there is something funny also. I've stuffed around with HZ and
polling settings heaps and could only manage about 120MB/s-ish of HTTP
traffic. I'm as running 5.4-stable from about 2-3 weeks ago.
/etc/sysctl.conf
kern.polling.enable=1
kern.polling.each_burst=50
#need to edit /usr/src/sys/kern/kern_poll.c for set this
kern.polling.burst_max=1500
#DO NOT SET THIS HIGHER THAN 65536 * 2 (FREEBSD BUG)
net.inet.tcp.sendspace=131072
net.inet.tcp.recvspace=131072
kern.random.sys.harvest.ethernet=0
kern.random.sys.harvest.interrupt=0
kern.ipc.somaxconn=1024
I still get lots of kern.polling.lost_polls and kern.polling.suspect.
How do you edit the RXD is 256, TXD is 256?
---> in /usr/src/sys/dev/em/if_em.h, the default is 256/256.
How do you view the errors when you set "sysctl hw.em0.stats=1"?
----> sysctl hw.em0.stats=1, then see it using dmesg.
Regards,
Dave
Mao Shou Yan writes:
> Hi, all,
>
> I have a machine with 3 Intel pro1000 cards.
>
> em0 is in promisc mode, whose MAC controller is 82543 using fiber line
> connected.
>
> em1, em2 is not connected with cable.
>
> Driver configuration is the default, RXD is 256, TXD is 256.
>
>
>
> Result of "netstat -i":
>
>
>
> Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
> em0 1500 <Link#1> 00:03:47:de:72:36 1701943600 369823630 1 0 0
> em1 1500 <Link#2> 00:10:dc:56:8b:b5 5561 0 4608 0 0
> em2 1500 <Link#3> 00:03:47:42:6d:17 0 0 0 0 0
>
>
>
> Pps of em0 is about 20k/pps, and bandwidth is no more than 150Mbps.
>
> When I use "sysctl hw.em0.stats=1", I found the number of "missed
> packets" is very high, which is about equal Ierrs.
>
> And I also found the number of"receive with no buffers"is raising with
> about 10 per second.
>
>
>
> The machine is no extra load, only a raw system with em0 in promisc
> mode!
>
>
>
> I'm looking forward your help!
>
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