Where to troubleshoot Intel PRO/1000 performance problems?

[Aaron Seelye]

So how about any irq conflicts?  tried netcat from this machine to another 
and vice versa?  duplexing/cabling problems?
----- Original Message ----- 
From: "Sally Janghos" <list at deeboz.ca>
To: "Aaron Seelye" <aseelye-lists at eltopia.com>
Cc: <freebsd-performance at freebsd.org>
Sent: Friday, March 23, 2007 11:14 AM
Subject: Re: Where to troubleshoot Intel PRO/1000 performance problems?


> Aaron,
>
>  Thanks for your reply.  Here is some output from some dd's on the disk 
> that I'm reading/writing to.
>
>> dd if=/dev/zero of=testfile count=1000000;dd if=testfile of=/dev/null
> 1000000+0 records in
> 1000000+0 records out
> 512000000 bytes transferred in 27.951769 secs (18317267 bytes/sec)
> 1000000+0 records in
> 1000000+0 records out
> 512000000 bytes transferred in 16.864945 secs (30358830 bytes/sec)
>> dd if=/dev/zero of=testfile count=1000000 ; dd if=testfile of=/dev/null
> 1000000+0 records in
> 1000000+0 records out
> 512000000 bytes transferred in 28.492921 secs (17969376 bytes/sec)
> 1000000+0 records in
> 1000000+0 records out
> 512000000 bytes transferred in 16.605797 secs (30832607 bytes/sec)
>
>  Am I reading right, the max network transfer rate from this disk will be 
> between 143Mbit and 246Mbit/sec?  Is there a way to determine if there is 
> an IRQ conflict?  How do you find out what IRQ's are currently used by the 
> system?
>
> Sally
>
> Thu, Mar 22, 2007 at 04:31:16PM -0700, Aaron Seelye wrote:
>> If it's platform agnostic, I'd start looking for IRQ conflicts.  It would
>> seems that your test all involve disk io, check that first and narrow 
>> down
>> that it's a network or disk problem.  You may have a bum raid card, irq
>> conflict on the network card, any number of things.
>>
>> -Aaron
>> ----- Original Message ----- 
>> From: "Sally Janghos" <list at deeboz.ca>
>> To: <freebsd-performance at freebsd.org>
>> Sent: Thursday, March 22, 2007 10:16 AM
>> Subject: Where to troubleshoot Intel PRO/1000 performance problems?
>>
>>
>> >I'm looking for some suggestions on where to start troubleshooting
>> >performance issues on a Intel PRO 1000 card.
>> >
>> >It's installed in a box with the following configuration:
>> >FreeBSD 6.1
>> >AMD Athlon(tm) XP 2100+ (1741.42-MHz 686-class CPU)
>> >Dell CERC SATA RAID 2
>> >
>> >The file transfer(ftp/smb/scp) speeds from/to this machine do not appear
>> >to go above 10Mb.  The other machine
>> >doing the transfers has similar specs(same Ethernet Card) but is a 
>> >Windows
>> >XP box.  I've tried replacing the switch with
>> >a crossover cable between the machines and the same speed persists.  Any
>> >suggestions on where to start and what tools
>> >should I use to do the benchmarks?
>> >
>> >Thanks,
>> > Sally
>> >_______________________________________________
>> >freebsd-performance at freebsd.org mailing list
>> >http://lists.freebsd.org/mailman/listinfo/freebsd-performance
>> >To unsubscribe, send any mail to
>> >"freebsd-performance-unsubscribe at freebsd.org"
>> >
>> >
>> >-- 
>> >No virus found in this incoming message.
>> >Checked by AVG Free Edition.
>> >Version: 7.5.446 / Virus Database: 268.18.17/730 - Release Date: 
>> >3/22/2007
>> >7:44 AM
>> >
>> >
>>
>
>
> -- 
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.5.446 / Virus Database: 268.18.17/730 - Release Date: 3/22/2007 
> 7:44 AM
>
>