Re: xfsdump/xfsrestore questions.

[Wessel Dankers <wsl@fruit.eu.org>]

On 2002-05-20 18:53:27-0400, Greg Freemyer wrote:
>  
>  >>  > If your data is 2:1 compressible, that is 7.2 GB/hr uncompressed. 
>  >>  > That sounds like what you are getting on the windows box.
>  >>  > 
>  >>  The issue here is that both jobs are using compression, but Arcserve
>  >>  2000 on NT is performing faster than say, tar or xfsdump. The problem
>  >>  I've got with this though, is that it's so much longer there's got to be
>  >>  something I could tweak, either with xfsdump or the drive, so that's
>  >>  what prompted my query.
> 
> Tape drives slow down excessively when they go from a streaming to a non-streaming situation.
> 
> If your feedrate is borderline, then a small speed reduction in data throughput caused by the software, could have a huge impact on backup times.

Perhaps you should insert a small buffer between xfsdump, for example with
bfr: http://www.glines.org:8000/software/buffer.html

This will be most useful when dealing with a large number of small files.

Regards,

--
Wessel Dankers <wsl@fruit.eu.org>

your process is not ISO 9000 compliant