On Thu, Jul 23, 2015 at 07:44:43PM -0500, Mark Linimon wrote: > On Fri, Jul 24, 2015 at 12:43:43AM +0000, Glen Barber wrote: > > Even on amd64, you need to tune the system with less than 4GB RAM. > > The only correct answer to "how much RAM do you need to run ZFS" is > "always more" AFAICT. >
There's a bit more to it than that. You *can* successfully run amd64 ZFS system with certain tunings (vfs.kmem_max IIRC), but you also need to adjust things like disabling prefetching with less than 4GB RAM (accessible to the OS). So yeah, "more RAM" is always a thing in this playing field. Glen
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