FS#18463 - use compcache to reduce RAM needed to install archlinux

Attached to Project: Release Engineering
Opened by solsTiCe (zebul666) - Thursday, 25 February 2010, 16:07 GMT
Last edited by Gerardo Exequiel Pozzi (djgera) - Monday, 22 October 2012, 23:12 GMT
Task Type Feature Request
Category ArchISO
Status Closed
Assigned To No-one
Architecture All
Severity Very Low
Priority Low
Reported Version 2009.08
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

hi.
at looking at the new feature of the just released 2.6.33kernel, one can look at http://lwn.net/Articles/334649/ compressed cache mechanism.

It could allow to use a compressed swap and this way reduces signifcativly the memory needed to install archlinux.
I know pacman is quite hungry of memory, especially during the install. So, this feature could be a good thing. And not that hard to implement.
just run
swapon /dev/ramzswap0

Of course, improvement in memory usage is not garanted. [test needed ?]

I put it here as a feature request just to be sure it is not forgotten but i am quite sure the devs have already spotted that.
This task depends upon

Closed by  Gerardo Exequiel Pozzi (djgera)
Monday, 22 October 2012, 23:12 GMT
Reason for closing:  Won't implement
Additional comments about closing:  This feature is still in staging. Anyway swap is active during detailed install process.
Comment by Gerardo Exequiel Pozzi (djgera) - Saturday, 02 July 2011, 17:42 GMT
I will look on this, maybe some kernel command line parameter like "swap_zram_size=". Also this can be useful for current dm-snapshot implementation, where cow device can be a zram "cow_zram_size=". I need to do some tests.
Comment by Gerardo Exequiel Pozzi (djgera) - Thursday, 01 September 2011, 01:02 GMT
what do you think about this?

   swap_on_zram (0.5 KiB)

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