Gigabit Throughput on a windows 2003

We are connecting to a 1 GB ports, the highest throughput I am seeing using
a 32 K TCP Windows Size (32,768) using Iperf to test is about 530 MBytes per
second. Is this good or should it be more than that. I know that
ethernet you cannot use 100% on it.

We are using broadcom gigabit adapters with Cat 6 (HP and Dell) using a
Cisco 6513 switch/router.

Does any have an suggestion to any registry settings that might help
throughput?


On our backups across our network, (1 GB port and same vlans) the average we
are seeing is the following: 740 MB/Min

Any thoughts?

Thanks,
Eric Sabo

Hello,

just to clarify, it's Mbit/s not MBytes.

Do you have the latest driver ?
Did you raise network driver send & receive windows ?

For backup purpose, you ofter have one server and many clients sending their
flow at the same time. Raising the receive window in the network's card
property made our speed backup much greater.

--
Cordialement,
Mathieu CHATEAU
English blog: http://lordoftheping.blogspot.com
French blog: http://www.lotp.fr


"Sabo, Eric" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> We are connecting to a 1 GB ports, the highest throughput I am seeing
> using a 32 K TCP Windows Size (32,768) using Iperf to test is about 530
> MBytes per second. Is this good or should it be more than that. I
> know that ethernet you cannot use 100% on it.
>
> We are using broadcom gigabit adapters with Cat 6 (HP and Dell) using a
> Cisco 6513 switch/router.
>
> Does any have an suggestion to any registry settings that might help
> throughput?
>
>
> On our backups across our network, (1 GB port and same vlans) the average
> we are seeing is the following: 740 MB/Min
>
> Any thoughts?
>
> Thanks,
> Eric Sabo
>

Yes, the latest drivers are being used.

TcpWindowSize 32768

Tcp1323Opts - 2

NumForwardPackets 60000

ForwardBufferMemory 80000

TCPAckFrequency 13 - was set on the NIC interface

Do you see any registry changes I need to adjust? There are really no
articles that say do it this way.







"Mathieu CHATEAU" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> Hello,
>
> just to clarify, it's Mbit/s not MBytes.
>
> Do you have the latest driver ?
> Did you raise network driver send & receive windows ?
>
> For backup purpose, you ofter have one server and many clients sending
> their flow at the same time. Raising the receive window in the network's
> card property made our speed backup much greater.
>
> --
> Cordialement,
> Mathieu CHATEAU
> English blog: http://lordoftheping.blogspot.com
> French blog: http://www.lotp.fr
>
>
> "Sabo, Eric" <(E-Mail Removed)> wrote in message
> news:%(E-Mail Removed)...
>> We are connecting to a 1 GB ports, the highest throughput I am seeing
>> using a 32 K TCP Windows Size (32,768) using Iperf to test is about 530
>> MBytes per second. Is this good or should it be more than that. I
>> know that ethernet you cannot use 100% on it.
>>
>> We are using broadcom gigabit adapters with Cat 6 (HP and Dell) using a
>> Cisco 6513 switch/router.
>>
>> Does any have an suggestion to any registry settings that might help
>> throughput?
>>
>>
>> On our backups across our network, (1 GB port and same vlans) the average
>> we are seeing is the following: 740 MB/Min
>>
>> Any thoughts?
>>
>> Thanks,
>> Eric Sabo
>>
>

I was speaking about the receive window inside the network's card properties

--
Cordialement,
Mathieu CHATEAU
English blog: http://lordoftheping.blogspot.com
French blog: http://www.lotp.fr


"Sabo, Eric" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Yes, the latest drivers are being used.
>
> TcpWindowSize 32768
>
> Tcp1323Opts - 2
>
> NumForwardPackets 60000
>
> ForwardBufferMemory 80000
>
> TCPAckFrequency 13 - was set on the NIC interface
>
> Do you see any registry changes I need to adjust? There are really no
> articles that say do it this way.
>
>
>
>
>
>
>
> "Mathieu CHATEAU" <(E-Mail Removed)> wrote in message
> news:%(E-Mail Removed)...
>> Hello,
>>
>> just to clarify, it's Mbit/s not MBytes.
>>
>> Do you have the latest driver ?
>> Did you raise network driver send & receive windows ?
>>
>> For backup purpose, you ofter have one server and many clients sending
>> their flow at the same time. Raising the receive window in the network's
>> card property made our speed backup much greater.
>>
>> --
>> Cordialement,
>> Mathieu CHATEAU
>> English blog: http://lordoftheping.blogspot.com
>> French blog: http://www.lotp.fr
>>
>>
>> "Sabo, Eric" <(E-Mail Removed)> wrote in message
>> news:%(E-Mail Removed)...
>>> We are connecting to a 1 GB ports, the highest throughput I am seeing
>>> using a 32 K TCP Windows Size (32,768) using Iperf to test is about 530
>>> MBytes per second. Is this good or should it be more than that. I
>>> know that ethernet you cannot use 100% on it.
>>>
>>> We are using broadcom gigabit adapters with Cat 6 (HP and Dell) using a
>>> Cisco 6513 switch/router.
>>>
>>> Does any have an suggestion to any registry settings that might help
>>> throughput?
>>>
>>>
>>> On our backups across our network, (1 GB port and same vlans) the
>>> average we are seeing is the following: 740 MB/Min
>>>
>>> Any thoughts?
>>>
>>> Thanks,
>>> Eric Sabo
>>>
>>
>
>