Super Slow Transfer Speeds Between Shares

jtoone
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Joined: Fri Apr 08, 2016 11:19 am

Super Slow Transfer Speeds Between Shares

Postby jtoone » Sun May 01, 2016 3:50 pm

I'm getting very slow transfer speeds between shares. I have 4 HDDs connected. 2 250GB in RAID0, a 500GB WD Blue and 2TB WD Green. I'll transfer a file from my Windows PC to the HDA and it'll clock in at ~100MB/s. Then I'll try to transfer between shares and it'll transfer anywhere between 15-50 MB/s. Shouldn't these transfers be (theoretically) at SATA2 (what my board has) speeds? I've mounted shares such that the files are moved across HDDs, and it doesn't matter if the transfer is within the RAID or from the RAID to another HDD...it's still painstakingly slow.

I was really beginning to like what amahi could do. If anyone has any insight as to how to make share to share transfers faster, let me know!

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bigfoot65
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Re: Super Slow Transfer Speeds Between Shares

Postby bigfoot65 » Tue May 03, 2016 4:23 am

Are you using Greyhole?

Check the internet for potential solutions?
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jtoone
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Joined: Fri Apr 08, 2016 11:19 am

Re: Super Slow Transfer Speeds Between Shares

Postby jtoone » Tue May 03, 2016 8:50 am

I am using Greyhole, but I tested on non-greyhole shares as well as greyhole shares.

It seems like when transferring using windows (or Fedora GUI) the transfer runs through the local machine. I verified this by using my laptop on wifi w/ i5 3500M processor and desktop wired w/ i7 4790k @ 4.6Ghz. I was getting about 10-15 MB/s on the laptop and about 65 MB/s with the desktop. I also tried with the Fedora GUI and was getting about 30 MB/s with a q9550 @ 2.83 GHz.

This may just be a side effect of samba. One of those things where I'll just have to live with it and make inter-share transfers at night or something. The read/write on the server is 100+ MB/s so that isn't an issue at all.

Now I need to figure out how to leverage the 2 Gig-E ports on the server....

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bigfoot65
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Re: Super Slow Transfer Speeds Between Shares

Postby bigfoot65 » Tue May 03, 2016 2:19 pm

Not sure what the issue could be but probably Samba related.

Many see different network speeds, often limited by the hardware or network.

Hopefully you can pinpoint the problem. Sorry but I don't have any advice where to look.
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