I am transferring files over the network to my other computers/server and I noticed I only transfer at 45-50 mb/s with DOpus, but when I disable DOpus, I get 100-140 mb/s.
I'm 100% sure this is a problem is DOpus. I have been researching this for the past 2-3 days and I have found that when I open my folders in windows explorer, rather than DOpus, they transfer at more than double the speed.
Sorry for the late response. I can't remember all the values I tried, but I was reading up on some other threads that mentioned the same thing and didn't have much success.
Here is some of the values I remember.
copy_nonbufferio_threshold at 0 and at 1.
copy_buffer_size: 64kb, 5GB, 15GB, 50GB
I also tried this forum, which is a good work around.
I decided to just manually open up windows explorer each time I wanted to move large files or use the solution from the link above.
I am using FlexRaid on Windows Home Server 2011. I also tested it on windows 7 with FlexRaid and just windows 7 alone, but I had the same result, even without FlexRaid. I think Directory Opus just caps at 50 mb/s over the network. After I changed the settings a bit, it ended up going to the 60's, but that still low compared to what I get with explorer.
Try 8KB, 256KB, 512KB, 1MB, 5MB, 10MB. (64KB is the default, and already tried, so no need to try that.)
It's also worth looking on the Networking tab of Task Manager to see when data is really being sent over the network, since speed indicators can be inconsistent between programs and even when the progress dialog says things are complete may be untrue, with the remaining data still being written from a cache.
If you see high network usage before the copy even starts, that indicates something may be using bandwidth to read the files, as could be triggered by a plugin or shell extension trying to read data for the existing files over the network in a poor way.