Re: solid-state drives

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx>]

:On Wed, Aug 01, 2012 at 06:16:13PM -0400, Pierre Abbat wrote:
:> This is a spinoff of the Aleutia question, since Aleutia puts SSDs in 
:> computers. How does the periodic Hammer job handle SSDs? Does reblocking do 
:> anything different than on an HDD? If a computer has an SSD and an HDD, which 
:> should get the swap space?
:> 
:> Pierre
:
:On my workstation I use an SSD for the root filesystem, swapcache and
:/usr/pkg.
:
:The current configuration has snapshots set to 1d (10d retention time)
:and reblocking is set to 7d (1m runtime). All other option (prune,
:rebalance, dedup and recopy) are disabled.
:
:Currently it is running fine, but in my opinion running swapcache on a
:workstation that just runs for a couple of hours is not always
:necessary. I'm just running this setup to play with the swapcache and
:the SSD, because I think it is a very nice feature.
:
:Regards,
:Sven

    You will definitely want to turn pruning on, it doesn't do all that much
    I/O and its needed to clean up the fine-grained snapshots.  Rebalance,
    dedup, and recopy can be left turned off.

					-Matt
					Matthew Dillon 
					<dillon@backplane.com>