Re: Slow restore

[Colin Percival <cperciva@tarsnap.com>]

On 06/06/12 03:35, Andreas Pattynama wrote:
> I'm trying out tarsnap and testing a restore of around 10 files (size of all
> files is around 20KB). The archive size is around 40GB. When I restore the
> files, it takes around 1-2 hours. Is it normal, that the recovery takes so much
> time?

Are all the files in the archive around 20 kB (making it a total of 2 million
files in the archive) or just the ones you're restoring?  Tarsnap does its best
to be efficient in restoring parts of archives, but it still needs to download
header information for each file to check if it matches what you asked to
extract.  For downloading 10 out of 2000000 files, almost all the time would be
spent looking for the files you need.

That said, Tarsnap extract performance is slower than I'd like it to be, and
this is something I'm working towards improving.

-- 
Colin Percival
Security Officer Emeritus, FreeBSD | The power to serve
Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid