Re: [Duplicity-talk] Transfer performance drops sharply after a few hours

[Scott Hannahs]

Try an rsync for a large multi GB folder.  See what happens.  I don't think it 
is duplicity since it always seems to have files waiting and it is just the 
ISP.  I have noticed the same thing from Comcast but I don't have "guaranteed" 
speeds.  Might want to check on that guarantee if rsync shows the same issue.

-Scott

On Oct 2, 2014, at 13:30, Carlos Chavez <address@hidden> wrote:

>    We have two 200Mbps links to the Internet (business grade with 
> "guaranteed" speeds) in our office and both show the same performance drop 
> after an hour or so.  We do not have any other application that needs that 
> much bandwidth for an extended period of time so I cannot say for sure my ISP 
> is doing something.  We used to have two separate servers until few weeks ago 
> and both finished their full backups in a few hours (one had a 10Mbps 
> connection and the other a 100Mbps connection).  Now that we are using a 
> single server it can take up to two days to complete a full backup.  The old 
> servers used older versions of Duplicity so maybe I will try downgrading to 
> see if that affects the transfer before getting into a shouting match with my 
> ISP.
> 
> On 10/2/14, 12:15 PM, Scott Hannahs wrote:
>> Bandwidth shaping by your ISP?  You state a 200 mbps link, but that may only 
>> be for short periods, the ISPs very rarely mention that this is not 
>> sustained bandwidth.
>> 
>> -Scott
>> 
>> On Oct 2, 2014, at 13:00, Carlos Chavez <address@hidden> wrote:
>> 
>>>    I am using duplicity to backup a remote server over the Internet.  A 
>>> full backup is about 150GB.  The remote server has a 1gbps link to the 
>>> INternet and the server in our office has a symetric 200mbps link.  When I 
>>> start the backup I can see the first transfers using all the available 
>>> bandwidth but after a few hours it drops and the rest of the transfers only 
>>> use around 6mbps.  Because of that the full backup can take days to 
>>> complete which makes things difficult.
>> 
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> 
> -- 
> Telecomunicaciones Abiertas de México S.A. de C.V.
> Carlos Chávez
> +52 (55)9116-91161
> 
> 
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