/tmp: change default to mdmfs and/or tmpfs?

[Dmitry Morozovsky]

On Sun, 9 Jun 2013, Ronald Klop wrote:

> > what do you think about stop using precious disk or even SSD resources for
> > /tmp?
> > 
> > For last several (well, maybe over 10?) years I constantly use md
> > (swap-backed)
> > for /tmp, usually 128M in size, which is enough for most of our server
> > needs.
> > Some require more, but none more than 512M.  Regarding the options, we use
> > tmpmfs_flags="-S -n -o async -b 4096 -f 512"
> > 
> > Given more and more fixes/improvements committed to tmpfs, switching /tmp to
> > it
> > would be even better idea.
> > 
> > You thoughts?  Thank you!
> > 
> > 
> 
> What keeps you from putting this in fstab and stop using the tmpmfs rc.conf
> variable?
> 'tmpfs           /tmp            tmpfs   rw,size=536870912      0       0'
> 
> I thought tmpmfs/varmfs infrastructure was more for diskless/full-NFS systems
> anyways.

I do not see much difference here, to be honest.  Either way, you have 
memory-backed /tmp (though via using /etc/rc.d/tmp you can fine-tune FS options 
a bit easier, at least for my PoV)

The question is: shouldn't we treat this as a default at least for usual 
amd64/i386 installation with "non-embedded" quantity of RAM (like, e.g. > 
512M)?

-- 
Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck at FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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