Problem with Intel 82540EM Gigabit Ethernet Controller

[Gabor Esperon]

--- Subhro <subhro.kar at gmail.com> wrote:

> Enable Devcice Polling iof it is supported by your
> NIC. Refer to the
> NOTES to find out which NICs support that feature.
> 
> Regards
> S.
> 
> On Tue, 31 Aug 2004 23:49:25 -0700 (PDT), Gabor
> Esperon
> <gesperon at yahoo.com> wrote:
> > Hi!
> > 
> > I have an Intel 82540EM Gigabit Ethernet
> Controller
> > working at 100Mb/s on FreeBSD 5-CURRENT and
> FreeBSD
> > 5-BETA3:
> > 
> > em0:
> > flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST>
> mtu
> > 1500
> > 
> > options=1b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING>
> >        inet 192.168.1.32 netmask 0xffffff00
> broadcast
> > 192.168.1.255
> >        ether 00:07:e9:09:a7:37
> >        media: Ethernet autoselect (100baseTX
> > <full-duplex>)
> >        status: active
> > 
> > thats ok, but in both systems I can only get
> transfers
> > at 2.xMb/s (MBytes) as the following "netstat -w1
> -I
> > em0" show:
> >            input          (em0)           output
> >   packets  errs      bytes    packets  errs
> > bytes colls
> >       782     0      46920       1438     0
> > 2177132     0
> >       788     0      53500       1452     0
> > 2209768     0
> >       886     0      53160       1628     0
> > 2464792     0
> >       788     0      53904       1452     0
> > 2208882     0
> >       799     0      50672       1452     0
> > 2198328     0
> >       789     0      53572       1451     0
> > 2206080     0
> >       785     0      47100       1442     0
> > 2186216     0
> >       795     0      53944       1462     0
> > 2218898     0
> >       787     0      47220       1451     0
> > 2195386     0
> >       780     0      53004       1437     0
> > 2189490     0
> >       797     0      47820       1466     0
> > 2216496     0
> >       790     0      53692       1452     0
> > 2209900     0
> >       787     0      47220       1448     0
> > 2195300     0
> >       792     0      53832       1456     0
> > 2210390     0
> >       766     0      45960       1408     0
> > 2131712     0
> >       789     0      53472       1452     0
> > 2211110     0
> >       790     0      47400       1452     0
> > 2198168     0
> >       784     0      53352       1445     0
> > 2198982     0
> >       786     0      47160       1444     0
> > 2183992     0
> >       791     0      53652       1452     0
> > 2209708     0
> > 
> > What could be the problem here?
> > 
> > =====
> > Gabor
> > Net/Sys Admin
> > 
> > _______________________________
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> >
>
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> > 
> 
> 
> -- 
> Subhro Sankha Kar
> School of Information Technology
> Block AQ-13/1 Sector V
> ZIP 700091
> India
> 

Hi!

I tried before with and without DEVICE_POLLING
(HZ=1000) and I still have < 24Mbit/s.

=====
Gabor
Net/Sys Admin


		
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