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Re: [Duplicity-talk] Transfer performance drops sharply after a few hour
Re: [Duplicity-talk] Transfer performance drops sharply after a few hours
Thu, 2 Oct 2014 13:35:10 -0400
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.
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
> 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.
>> 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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