[ale] rsync comparisons

[Jeff Hubbs]

That could hurt you badly; I'm not clear on how rsync uses bandwidth at 
the same time but something tells me that with the NFS overhead in the 
mix (hmm, fool with NFS block sizes and enable jumbo frames, maybe?) an 
rsync operation that goes both in and out on the same NIC via NFS isn't 
necessarily going to utilize a duplex network connection cleanly.

Clearly turning on compression in rsync won't help.

Are the two NFS exports on two different machines?  If so, are you sure 
you can't have this operation take place just between the two of them, 
with one set up as the puller or pusher?

Can you afford the disk space on the rsyncing machine to hold a copy of 
what's being rsynced, such that you can do this in two stages?



On 4/1/10 4:11 PM, Robert Coggins wrote:
> Hmm good point.  I will have to check the nics out.  But yeah I think
> over same nic
>
> On 04/01/2010 04:08 PM, Jeff Hubbs wrote:
>    
>> Eww.  Over the same NIC?
>>
>> On 4/1/10 3:56 PM, Robert Coggins wrote:
>>      
>>> looks like it but they are 2 nfs mounts on one box.
>>>
>>> On 04/01/2010 03:55 PM, Jeff Hubbs wrote:
>>>
>>>        
>>>> Is this a box-to-same-box rsync?
>>>>
>>>>          
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