Date: Wed, 13 Feb 2008 11:01:05 -0500 From: Victor Farah <victor@netmediaservices.net> To: Derek Ragona <derek@computinginnovations.com> Cc: freebsd-questions@freebsd.org Subject: Re: Network Help Message-ID: <47B31441.8040801@netmediaservices.net> In-Reply-To: <6.0.0.22.2.20080212180525.024f9b80@mail.computinginnovations.com> References: <47B1F883.6020407@netmediaservices.net> <6.0.0.22.2.20080212180525.024f9b80@mail.computinginnovations.com>
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I'm updating the system to 6.3-release now.
All 13 machines are on the same subnet but they are scattered across
different switchs.
netstat -m:
7716/399/8115 mbufs in use (current/cache/total)
7388/326/7714/25600 mbuf clusters in use (current/cache/total/max)
7380/41 mbuf+clusters out of packet secondary zone in use (current/cache)
0/0/0/0 4k (page size) jumbo clusters in use (current/cache/total/max)
0/0/0/0 9k jumbo clusters in use (current/cache/total/max)
0/0/0/0 16k jumbo clusters in use (current/cache/total/max)
16705K/751K/17456K bytes allocated to network (current/cache/total)
0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
0/0/0 requests for jumbo clusters denied (4k/9k/16k)
0/6/6656 sfbufs in use (current/peak/max)
0 requests for sfbufs denied
0 requests for sfbufs delayed
0 requests for I/O initiated by sendfile
193374 calls to protocol drain routines
ifconfig -a:
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=b<RXCSUM,TXCSUM,VLAN_MTU>
inet 192.168.X.X netmask 0xffffff00 broadcast 192.168.X.255
ether 00:1b:fc:ef:34:de
media: Ethernet autoselect (1000baseTX <full-duplex>)
status: active
em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
options=b<RXCSUM,TXCSUM,VLAN_MTU>
inet X.X.X.X netmask 0xffffff00 broadcast X.X.X.255
ether 00:1b:fc:ef:34:df
media: Ethernet 1000baseTX <full-duplex>
status: active
plip0: flags=108810<POINTOPOINT,SIMPLEX,MULTICAST,NEEDSGIANT> mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
inet6 ::1 prefixlen 128
inet 127.0.0.1 netmask 0xff000000
Derek Ragona wrote:
> At 01:50 PM 2/12/2008, Victor Farah wrote:
>> Hello,
>> I have a machine setup with FreeBSD 6.3-PRERELEASE setup on a
>> 10/100/1000 switch. There are a pair of em interfaces, and the
>> network traffic on this machine is very spuratic. Both EM interfaces
>> reach 100Mbps and falls to 5~10Mbps, the very next minute, the traffic
>> is very spuratic. The media of the interfaces is as follows:
>> EM0: media: Ethernet autoselect (1000baseTX <full-duplex>)
>> EM1: media: Ethernet 1000baseTX <full-duplex>
>> Currently the EM1 card is in use.
>> I watch an MRTG that I have setup to see the machine failing at
>> sustaining its bandwidth.
>> I have 13 other machines setup the same way but traffic is running
>> fine and working very well, the only difference between those and the
>> new one, is that it's pushing much more data through it; almost the
>> same amount of data the 13 other machines push combined.
>
> First you should update this system to 6.3 release.
>
> Also you should post how your interfaces are configured, you can copy
> and paste the output from:
> ifconfig -a
>
> You also need to better explain the topology of your network. For
> instance are all 13 systems on the same subnet? or are you running
> multiple subnets with a switched backbone? How many switches are you
> using? Are you checking the throughput across a LAN segment or across
> multiple subnet segments?
>
> -Derek
>
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