Last time I checked we saw something like a 35% increase in overhead on AWSY going from 32-bit to 64-bit Firefox on 64-bit Windows, so yes there is a significant impact.
On the other hand you no-longer run into the OOM-because-of-address-space-exhaustion and OOM-because-we-can't-find-a-one-meg-chunk-in-this-horribly-fragmented-heap issues. In theory even if the physical memory usage gets too high we can hope that things get paged out rather than OOMing. So there's a reasonable argument for just upping everyone who can to 64-bit. -e On Thu, May 12, 2016 at 2:46 PM, Karl Tomlinson <mozn...@karlt.net> wrote: > Lawrence Mandel writes: > > > Do we need this criteria? > > > > RAM - Does it hurt to move an instance that has <4GB? > > Yes. OOM will be more common with 64-bit builds on systems with > less RAM because 64-bit builds use more memory. > _______________________________________________ > dev-platform mailing list > dev-platform@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-platform > _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
