[Samba] Performance Question: Lots of Small Files vs One Large File

Christopher Wensink cwensink at five-star-plastics.com
Tue Oct 6 18:09:08 UTC 2020

We had a similar issue that I fought for a while, and the issue was with 
the NIC Card settings on the PC's, Turn off energy efficient ethernet, 
Green Ethernet, set wake on magic packet  = disabled, turn off any other 
power saving modes on the NIC card.

You can also try adjusting MTU settings, but leave it at the default of 
1500 on both ends of the connection to start.

Take some base benchmarks for transferring a 10MB file, a 100 MB file 
and a 1 GB file without changing anything, then make those changes on 
one PC, then test again with the same files, and reply back with the 


On 10/6/2020 12:49 PM, Robert Buck via samba wrote:
> In an architecture where we have Samba running on RHEL exposing shares to
> Windows, when we have 1 large 1GB file, the write performance to storage is
> very fast, even over distances of 5000 miles. However, even writes to local
> Samba servers, with 100 10MB files being copied onto a shared drive,
> Windows Explorer is MUCH slower. I don't know if it's really Samba, but
> more than likely Windows.
> Does anyone on channel have experience with copying multiple small files
> onto shares? Are there any ways to make copying files onto a share faster?
> Thanks

Christopher Wensink
IS Administrator
Five Star Plastics, Inc
1339 Continental Drive
Eau Claire, WI 54701
Office:  715-831-1682
Mobile:  715-563-3112
Fax:  715-831-6075
cwensink at five-star-plastics.com

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