D-Link Forums
The Graveyard - Products No Longer Supported => D-Link Storage => DNS-323 => Topic started by: Clayton on November 20, 2009, 01:50:15 AM
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Just looking through my NIC driver advanced settings and was wondering what would be the best settings for faster speeds
Jumbo Frames
5KB MTU
6KB MTU
7KB MTU
8KB MTU
9KB MTU
DISABLED
Speed & Duplex
1.0Gbps Full Duplex
10Mbps Full Duplex
10Mbps Half Duplex
100Mbps Full Duplex
100Mbps Half Dulex
Auto Negotiation
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Actually there's no way we can answer that since we don't know anything about the rest of your network.
My suggestion would be that you leave it the speed/duplex on auto, and unless you have a network with a gigabit switch, that supports jumbo frame, and your computer(s) also support jumbo frame, that you leave jumbo frame disabled.
If your does support jumbo frame, then enable it and test throughput with the different frame sizes - what works best on my network may not be best on yours.
By the way - since your question displays an incredible amount of naivety - get a good book on ethernet networking (or use google) and learn what the terms mean and how things work - before trying to tweak them for greater throughput.
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Actually this depends more on your common file sizes. If you have large files such as a database that you are continually accessing or backing up, it would be reasonable to use jumbo frames. I would recommend that you create a test folder of files that you would normal use or backup. Create a batch file with a start time stamp, the copy instruction and stop time stamp. You will want two batch files where one is a copy from your PC to the NAS and another from the NAS to the PC. Run each batch file three times in order to get an average time for each direction of the copy. I would then change your NIC to the first jumbo size you mentioned and run the tests again. In comparing the test times you should see either a decrease or increase in copy time. I would keep increasing the block size setting until you find the sweet spot. My experience is for typical files is that your block size will be optimal at either the default or at the 5000 size. Your network should be set at the max your systems can handle assuming that you also have a 1Gig switch in the middle or are directly connected.
Another excellent tool that is more advanced for testing network performance is IPERF. You can GOOGLE it and find the program and instructions.
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There is an easier way - take a look at this thread (http://forums.dlink.com/index.php?topic=8974.0) - about 8 posts down, you'll find one by mig, with a link to a utility that will do your testing - although it will work with any NAS, it was actually written with the DNS-323 in mind.