[Lustre-discuss] Tar on Lustre
pg_lus at lus.for.sabi.co.uk
Mon Feb 13 07:39:39 PST 2012
> We have a setup that requires a lot of tar being used on
That's your choice, however audacious it may be.
[ ... ]
> tar to extract a 5.2GB file on to the lustre system - 3m22s
> tar to extract the same 5.2GB file on to local disk - 1m06s
> tat to create a 5.2GB tar file on the lustre system - 4m10s
> tar to create the same 5.2GB file on to local disk - 2m21s
This depends a lot on what is inside the 'tar' file (and the
settings for the local file system), which do not seem important
to you, but really matter.
But in general this is not surprising. It is a FAQ: MDS updates
As its structure with a number of object/strip servers and many
file clients suggests, Lustre is meant to do well on parallel
workloads reading/writing large files. That involves tradeoffs.
[ ... ]
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