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Re: Speed of Backup
- To: Colin Percival <cperciva@tarsnap.com>
- Subject: Re: Speed of Backup
- From: Mike Kallies <mike.kallies@gmail.com>
- Date: Wed, 26 Feb 2014 14:04:20 +0100
- Cc: tarsnap-users@tarsnap.com
- In-reply-to: <0000014469b112eb-0077f6a8-de85-4584-82f0-ef8b3055c695-000000@email.amazonses.com>
- References: <CAPYt=DF2-GHeL2RBmmiENazXxWcnmS6GhndCcsG9_swAVK20mw@mail.gmail.com> <0000014469b112eb-0077f6a8-de85-4584-82f0-ef8b3055c695-000000@email.amazonses.com>
On Tue, Feb 25, 2014 at 4:36 PM, Colin Percival <cperciva@tarsnap.com> wrote:
> On 02/25/14 03:15, Mike Kallies wrote:
>> We're doing nightly backups using Tarsnap, approximately 100G of data.
>> The backups are taking a very long time, and the time has been
>> increasing steadily since early January.
>
> Hmm...
>
>> Backups which would normally start around 9pm and finish around 5am,
>> now start at 9pm and finish around 2:30pm. There is not a huge
>> amount of change in the files. (~1-2G or so per day)
>
> Is that 1-2 GB based on tarsnap's statistics (--print-stats), or based
> on your internal reckoning of changing files?
Based on internal reckoning.
We had a DSL modem failure here, so there could have been packet loss
going on. Once we get the problem fixed properly, and have a clean
backup without possible impact from packet loss I'll send the numbers.
> Shouldn't be necessary... there's something weird going on for such a small
> amount of data to take so long.
Small amount being 100G? or the 2GB of changes?
Thanks for the response,
-Mike