Re: DELL PowerEdge 860 and Broadcom Gigabit Ethernet poor performance.

On Wed, Dec 26, 2007 at 02:24:44PM -0500, Sten Daniel Soersdal said:
Jean-Claude MICHOT wrote:
The server is a DELL PowerEdge 860 freshly installed with
FreeBSD 7.0-BETA4 (GENERIC Kernel).

There's no problem with input throughput (upto 980 Mbits) but output
throughput never go upper to 540 Mbits :(

Just for test, i have add to this server an Intel Gigabit Ethernet board
(em) and there's no problem to output data up to around 980 Mbits with
this addon board.

If i boot the server with Linux Ubuntu, there's no output throughput
problem with Broadcom, so it seem to be FreeBSD bge driver problem.

I'm not the only one to have poor output performance with bge on
DELL PowerEdge 860
http://lists.freebsd.org/pipermail/freebsd-net/2007-June/014373.html

I have also try various patch or setup driver default values
http://lists.freebsd.org/pipermail/freebsd-net/2007-November/015951.html
http://lists.freebsd.org/pipermail/freebsd-net/2007-November/015956.html

But all theses attempts to get better ouput performance was unsuccessful :(

Any idea are welcome.

PS: If it's usefull to debug and try to fix the problem, i can provide
root access to a DELL PE860 test server with bge.

Have you tried setting the tcp send and receive windows?
The defaults are:

net.inet.tcp.sendspace: 32768
net.inet.tcp.recvspace: 65536

Also you might want to try to lower:

net.inet.tcp.delacktime: 100

Yes, no difference. But as i said, same freebsd "config" with Intel em
board instead of Broadcom bge, and there's no output throuhgput problem.

JC

--
"Those people who think they know everything are a great annoyance
to those of us who do." Isaac Asimov

_______________________________________________
freebsd-performance@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-performance
To unsubscribe, send any mail to "freebsd-performance-unsubscribe@xxxxxxxxxxx"

Relevant Pages

  • Re: DELL PowerEdge 860 and Broadcom Gigabit Ethernet poor performance.
    ... FreeBSD 7.0-BETA4. ... There's no problem with input throughput (upto 980 Mbits) but output ... so it seem to be FreeBSD bge driver problem. ...
    (freebsd-net)
  • Re: FreeBSD 5.3b7and poor ata performance
    ... FreeBSD all I can to do is formulate a theory about the problem. ... windows shows a normal throughput. ... so I don't think it's a problem with the promise controller, ... Test over disks as raw devices have the ...
    (freebsd-current)
  • some simple nfs-benchmarks on 5.4 RC2
    ... simple benchmarks against a FreeBSD 5.4 RC2-server. ... The purpose of this test was *not* to measure throughput using various ... So all clients were mounted using r/w-sizes of 32768. ... Will I get better performance upgrading the server from dual PIII to dual Xeon? ...
    (freebsd-performance)
  • some simple nfs-benchmarks on 5.4 RC2
    ... simple benchmarks against a FreeBSD 5.4 RC2-server. ... The purpose of this test was *not* to measure throughput using various ... So all clients were mounted using r/w-sizes of 32768. ... Will I get better performance upgrading the server from dual PIII to dual Xeon? ...
    (freebsd-stable)
  • Re: Difference between 6.2 and 7.0 Adaptec 39320D - 7.0 performing less
    ... I am toying with Freebsd 7 to see if it will and how it runs on my new ... 7.0-Current-200704 the throughput of the SCSI drive seems halved. ... Recompile your kernel with debugging options disabled before making ... The detection of devices is not ...
    (freebsd-current)