Re: {* 05.00 *}Re: Re: Re: Desperate with 870 QVO and ZFS

Hi Mike! 

Thanks a lot for your answer :) :) and your time :) :) 

Answering below in blue bold...

El 2022-04-07 13:25, mike tancsa escribió:

> On 4/7/2022 4:59 AM, egoitz@ramattack.net wrote: 
> 
>> 
> Hi,
> 
> With respect to compression, I think there is a sweet spot somewhere, where compression makes things faster if your disk IO is the limiting factor and you have spare CPU capacity.  I have a separate 13.x zfs server with ztsd enabled and I get compression rations of 15:1 as it stores a lot of giant JSON txt files. 
> 
> ZTSD OR ZTSD-2 AS IN SOME MAIL PREVIOUS STEFAN STATED?. I ASSUME ARE NOT THE SAME... ARE THEY?.
> 
> Think of the extreme case where you do something like
> 
> dd if=/dev/zero of=/tank/junk.bin bs=1m count=10000 
> 
> as this is a 20G file that takes just a few hundred bytes of write IO on a compressed system. Obviously, as the compress ratio reduces in the real world the benefits become less.  Where that diminishing return is, not sure.  But something to keep in mind 
> 
> TOTALLY TRUE AND TOTALLY AGREE MIKE!! 
> CHEERS!!