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rsync transfer slow over network

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rsync transfer slow over network

McDowell, Blake

Hello,

 

We have our mac connected to a SAN via 10Gbe fiber network. Being thunderbolt model macs with no PCI slots we are using external boxes (Sonnet, ATTO) to interface between the thunderbolt and fiber connections.

 

When using rsync -avvPhi we get speeds of approx 110MB/s but with a simple drag-and-drop we get speeds of approx 620MB/s. BIG difference. We get the same speeds (roughly) whether we connect afp or smb.

 

Anyone have any suggestions for what to do to make the rsync transfer faster? These are local transfers with the SAN showing up as a shared drive on the desktop.

 

Thanks!


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Re: rsync transfer slow over network

Kevin Korb
Rsync is notoriously slow when used for a local copy.  You are better
off doing something like a cp -au.

On 03/06/2017 06:47 PM, McDowell, Blake wrote:

> Hello,
>
>  
>
> We have our mac connected to a SAN via 10Gbe fiber network. Being
> thunderbolt model macs with no PCI slots we are using external boxes
> (Sonnet, ATTO) to interface between the thunderbolt and fiber connections.
>
>  
>
> When using rsync -avvPhi we get speeds of approx 110MB/s but with a
> simple drag-and-drop we get speeds of approx 620MB/s. BIG difference. We
> get the same speeds (roughly) whether we connect afp or smb.
>
>  
>
> Anyone have any suggestions for what to do to make the rsync transfer
> faster? These are local transfers with the SAN showing up as a shared
> drive on the desktop.
>
>  
>
> Thanks!
>
>
>
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