> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Will Murnane > > > I am surprised with the performances of some 64-bit multi-threaded > > applications on my AMD Opteron machine. For most of the applications, > > the performance of 32-bit version is almost same as the performance of > > 64-bit version. However, for a couple of applications, 32-bit versions > > This list discusses the ZFS filesystem. Perhaps you'd be better off > posting to perf-discuss or tools-gcc? > > That said, you need to provide more information. What compiler and > flags did you use? What does your program (broadly speaking) do? > What did you measure to conclude that it's slower in 64-bit mode?
Not only that, for most things the 32 vs 64bit architectures are expected to perform about the same. The 64bit architecture exists mostly for higher memory addressing bits, not for twice the performance. YMMV. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
