Samba tuning for large files

[Stefan (Stefan Nantz)]

Hi All,

how can I increase the samba transfer speeds for large files?

I am getting 50MB/sec with iperf3 but only 20MB/sec coping a large file. (wifi)

It is not the underlying storage. I get the same from SSD, internal transfer from one pool to another are well above 100MB/sec. Replication via ethernet gets 50MB/sec.

[phillxnet (Philip Guyton)]

@Stefan Hello again.
Re:

@Stefan

I am getting 50MB/sec with iperf3 but only 20MB/sec coping a large file. (wifi)

As your samba speed is roughly half your measured network speed (iperf3) I wandered if the client in use was using libsmbclient, i.e. a linux desktop client with GUI administered samba client connection to Rockstor’s samba server.

See the following thread if that is the case:

Slow transfer btw rockstor and linux

@buzzbuzz Welcome to the Rockstor community. Yes this is a know limitation on the client side when using gvfs (which in turn uses libsmbclient) where as if you test the same hardware having made the mount via for example 'mount -t cifs …" you would see the expected full line speed. Rather unfortunate that the linux desktop clients don’t have this one sorted yet. But it use to be much slower. You should be able to test the difference by first mounting, as I suspect you already have, via libsmb…

That’s all that springs to mind currently. Not sure is this is still currently relevant but linking just in case as easy to test given the info in that thread.

Hope that helps.

[Stefan (Stefan Nantz)]

Hi Phil,

that was it, using it with autofs and the throughput if great.

Thank you.

[phillxnet (Philip Guyton)]

@Stefan Thanks for the update and glad your now sorted.