Reply to thread

Message

If you would like I'll get all technical here...
The main problem with Gb networking isn't really the networking bit at all - it's the HDDs and the speed that they can dump the data to the bus.
The PCI bus used can only go to the theoretical limit of 133 MB/s - GB ethernet max is 125 MB/s but you have to remember that everything is using the PCI bus in the PC. Every card you add in grabs some of the bandwidth = slower transfer speed.
PCIe gives 250MB/s to each channel - that's why its seriously faster.

To test you could always try transferring from a RAM disk - this eliminates the fragmentation and HDD problems.

Here's a few tips - hopefully something should work!
Make sure ALL the NICs are PCIe - I have yet to get a good Gb network speed on PCI NICs for the reason above.
Set the NICs to 1000/full
Disable any QOS you have going on
Make sure you have fast HDDs and are getting good throughput on them (5400 ain't too good for this, best with SSDs)
Disable Checksum Offloading
Disable any 'Green' or 'Eco' networking crap
Try changing the settings for - Jumbo Frames and flow control
Try disabling 'Auto tuning' - start >> run >> cmd >> netsh interface tcp set global autotuninglevel=disabled
Defrag your drives
Make sure your derives are not compressed (right click drive >> properties)
If Windows 7 - try disabling the 'Link-layer Topology Discovery Mapper I/O Driver'
Check your cables runs are as short as they can be and are away from power cables.
Try disabling SMB:
start >> run >> cmd >>
sc config lanmanworkstation depend= bowser/mrxsmb10/nsi
sc config mrxsmb20 start= disabled
(change disabled to auto to reenable SMB)
Open the registry to 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanworkstaion'.
Check DWORDs 'MaxCmds','MaxThreads' and 'MaxCollectionCount' under this branch.
Assign them a value of MaxCmds = 30, MaxThreads = 30 and MaxCollectionCount = 32 - make them if they are not there.
After you restart your system, you should see an increase in the performance.
Don't forget that your drives will have a real speed difference for read/write performance. Slow read or write on one drive will effect performance.
Also - try RoboCopy - it uses some of the changed API of the SMB copy.
If you are getting a transfer speed of about 20-80 mb/s you are doing quite well!

<blockquote data-quote="SpudR" data-source="post: 886452" data-attributes="member: 54104">If you would like I'll get all technical here...The main problem with Gb networking isn't really the networking bit at all - it's the HDDs and the speed that they can dump the data to the bus.The PCI bus used can only go to the theoretical limit of 133 MB/s - GB ethernet max is 125 MB/s but you have to remember that everything is using the PCI bus in the PC. Every card you add in grabs some of the bandwidth = slower transfer speed.PCIe gives 250MB/s to each channel - that's why its seriously faster.&nbsp;To test you could always try transferring from a RAM disk - this eliminates the fragmentation and HDD problems.&nbsp;Here's a few tips - hopefully something should work!<ul>
<li data-xf-list-type="ul">Make sure ALL the NICs are PCIe - I have yet to get a good Gb network speed on PCI NICs for the reason above.</li>
<li data-xf-list-type="ul">Set the NICs to 1000/full</li>
<li data-xf-list-type="ul">Disable any QOS you have going on</li>
<li data-xf-list-type="ul">Make sure you have fast HDDs and are getting good throughput on them (5400 ain't too good for this, best with SSDs)</li>
<li data-xf-list-type="ul">Disable Checksum Offloading</li>
<li data-xf-list-type="ul">Disable any 'Green' or 'Eco' networking crap</li>
<li data-xf-list-type="ul">Try changing the settings for - Jumbo Frames and flow control</li>
<li data-xf-list-type="ul">Try disabling 'Auto tuning' - start &gt;&gt; run &gt;&gt; cmd &gt;&gt; netsh interface tcp set global autotuninglevel=disabled</li>
<li data-xf-list-type="ul">Defrag your drives</li>
<li data-xf-list-type="ul">Make sure your derives are not compressed (right click drive &gt;&gt; properties)</li>
<li data-xf-list-type="ul">If Windows 7 - try disabling the 'Link-layer Topology Discovery Mapper I/O Driver'</li>
<li data-xf-list-type="ul">Check your cables runs are as short as they can be and are away from power cables.</li>
<li data-xf-list-type="ul">Try disabling SMB:</li>
<li data-xf-list-type="ul">start &gt;&gt; run &gt;&gt; cmd &gt;&gt; 
sc config lanmanworkstation depend= bowser/mrxsmb10/nsi 
sc config mrxsmb20 start= disabled 
(change disabled to auto to reenable SMB)</li>
<li data-xf-list-type="ul">Open the registry to 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanworkstaion'. 
Check DWORDs 'MaxCmds','MaxThreads' and 'MaxCollectionCount' under this branch. 
Assign them a value of MaxCmds = 30, MaxThreads = 30 and MaxCollectionCount = 32 - make them if they are not there. 
After you restart your system, you should see an increase in the performance.</li>
</ul>Don't forget that your drives will have a real speed difference for read/write performance. Slow read or write on one drive will effect performance.Also - try RoboCopy - it uses some of the changed API of the SMB copy.If you are getting a transfer speed of about 20-80 mb/s you are doing quite well!</blockquote>

[QUOTE="SpudR, post: 886452, member: 54104"] If you would like I'll get all technical here... The main problem with Gb networking isn't really the networking bit at all - it's the HDDs and the speed that they can dump the data to the bus. The PCI bus used can only go to the theoretical limit of 133 MB/s - GB ethernet max is 125 MB/s but you have to remember that everything is using the PCI bus in the PC. Every card you add in grabs some of the bandwidth = slower transfer speed. PCIe gives 250MB/s to each channel - that's why its seriously faster. To test you could always try transferring from a RAM disk - this eliminates the fragmentation and HDD problems. Here's a few tips - hopefully something should work! [LIST] [*]Make sure ALL the NICs are PCIe - I have yet to get a good Gb network speed on PCI NICs for the reason above. [*]Set the NICs to 1000/full [*]Disable any QOS you have going on [*]Make sure you have fast HDDs and are getting good throughput on them (5400 ain't too good for this, best with SSDs) [*]Disable Checksum Offloading [*]Disable any 'Green' or 'Eco' networking crap [*]Try changing the settings for - Jumbo Frames and flow control [*]Try disabling 'Auto tuning' - start >> run >> cmd >> netsh interface tcp set global autotuninglevel=disabled [*]Defrag your drives [*]Make sure your derives are not compressed (right click drive >> properties) [*]If Windows 7 - try disabling the 'Link-layer Topology Discovery Mapper I/O Driver' [*]Check your cables runs are as short as they can be and are away from power cables. [*]Try disabling SMB: [*]start >> run >> cmd >> sc config lanmanworkstation depend= bowser/mrxsmb10/nsi sc config mrxsmb20 start= disabled (change disabled to auto to reenable SMB) [*]Open the registry to 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanworkstaion'. Check DWORDs 'MaxCmds','MaxThreads' and 'MaxCollectionCount' under this branch. Assign them a value of MaxCmds = 30, MaxThreads = 30 and MaxCollectionCount = 32 - make them if they are not there. After you restart your system, you should see an increase in the performance. [/LIST] Don't forget that your drives will have a real speed difference for read/write performance. Slow read or write on one drive will effect performance. Also - try RoboCopy - it uses some of the changed API of the SMB copy. If you are getting a transfer speed of about 20-80 mb/s you are doing quite well! [/QUOTE]