Re: [lc-devel] hello

[Bob A. <cu...@pb...>]

hmm.. can i enable page cache compression on machine with swap _partition_?
or should i fear of all rw filesystems damage?
i have such machine, and in doubt, it is remote machine, so i fear that i'll
loose it until i'll be able to go there physically ,
if something will go wrong (like /lib/ corruption)

> The default algorithm, which has achieved the best results, is
> LZO. However, you can enable WKdm or WK4x4 changing the "compalg="
> kernel parameter.
yep, WKdm gave me around 61% comp ratio (the lower % of ratio, the better 
compression is, i assume) while LZO around 41%-50% 

> There is no system detection concerning the amount of memory and
> compression algorithms that are best suited for each case.
if CPU is idle cache re-compression could be performed (trying to compress
'better' and re-insert page with 'better' version if possible)
 also, you probably noticed that LZO files can be sometimes compressed twice
(two pass)  with about 5%-20% of further gain (dunno wheter it isn't already 
implemented in LZO)

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