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Date:      Wed, 14 Oct 2020 15:26:57 +0100
From:      RW <rwmaillists@googlemail.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: A couple of questions about SSDs
Message-ID:  <20201014152657.31e26ece@gumby.homeunix.com>
In-Reply-To: <20201014113635.ce39d02e.freebsd@edvax.de>
References:  <fee9e64d-4b27-d1cf-11c5-5af9ffa99935@netfence.it> <20201014113635.ce39d02e.freebsd@edvax.de>

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On Wed, 14 Oct 2020 11:36:35 +0200
Polytropon wrote:


> > Is anyone using Poudriere on SSDs? Are there any measures of the
> > impact on wear?  
> 
> No, I'm still using rotating rust for that. ;-)
> 
> But you're absolutely thinking into the right direction:
> Running poudriere causes a lot of writes, it's not just
> limited to swap (which gets activated only if RAM is full).
> During ports building, lots of files are being written,
> and _that_ probably is the significant question here.


For any port building I do I have the work directory on tmpfs backed by
swap.  With enough memory this eliminates the non-essential writes to
the drive leaving just the install or package writes.

I don't know whether it's sensible to do this with poudiere. I gather
it relies on ZFS snapshots for efficiency. 



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