Jürgen Keil wrote:
It's been a long time, but I seem to recall that the ZFS internals were
written using values (ints, longs, etc) as found on 64-bit
architectures, and that there was the possibility that many of them
wouldn't operate properly in a 32-bit environment (i.e. size assumption
mismatches on values that might silently drop/truncate or screw up
calculations). I don't know if that's still correct (or if I'm getting
it completely wrong), but the word was (2 years ago), that 32-bit ZFS
might not just have performance problems, but might possibly be silently
besides performance aspects, what`s the con`s of
running zfs on 32 bit ?
The default 32 bit kernel can cache a limited amount of data
(< 512MB) - unless you lower the "kernelbase" parameter.
In the end the small cache size on 32 bit explains the inferior
performance compared to the 64 bit kernel.
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