[CentOS-mirror] rsync lock files

El Viernes 08/03/2019 a las 16:09, David Richardson escribió:
> I'm quoted! I'm famous! :)

With reason, your flock advise was thoroughly implemented in our 
infrastructure :)

And lately I (almost accidentally) realised the good effects of lowering 
vm.vfs_cache_pressure, reinforced after re-reading your email :)

> There's two parts to what was quoted below:
>
> 1) Use flock to make sure you only have one update running. It'll do the
>     right thing if something happens and the job exits abnormally. Someone
>     else has already written a tool, so use their work instead of
>     reinventing it yourself.
>
> 2) Tune vm.vfs_cache_pressure. In my experience, this makes the operations
>     where you care about interactive performance (ls, du, find, rsync
>     updates from upstream) MUCH faster, and has little impact on
>     bulk-transfer performance.
>
> Thanks,
> DR


-- 
Ricardo J. Barberis
Senior SysAdmin / IT Architect
DonWeb
La Actitud Es Todo
www.DonWeb.com
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