On Wed, 24 May 2017 15:45:45 +0300 Andrew Savchenko <birc...@gentoo.org> wrote:
> - smaller CPU overhead: not every i/o is being compressed, e.g. if > there is sill enough RAM available it is used without compression > overhead as usual, but if memory is not enough, swapped out pages > are being compressed instead of swapping out to disk; I found the opposite problem somehow. CPU started becomming frequently pegged in zswap for no obvious reason, while the underlying IO that zswap was doing was only measurable in kb/s , far, far, far below the noise thresholds and by no means a strain on even my crappy spinning rust based swap. And to add to that, zswap introduced general protection faults and kernel panics. So nah, I'm glad I turned that off, it was a huge mistake.
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