On Wed, Apr 07, 2010 at 05:02:33PM -0400, Josh Malone wrote: > >>> OS is Ubuntu 9.04 32Bit > >>> IMHO it is better to migrate to a 64Bit-System!? > >> > >> I don't see an urgent reason to migrate to 64 bit... I would have > >> installed this machine 64 bit at the beginning, just because it's a 64 > >> bit machine. You'll lose some performance, but it might be barely > >> noticeable. > > > > I'm not so sure that's the case. My understanding is that a 32-bit OS > > can only address a little over 3GB of physical memory, since the > > system has 8GB, I would think you would want to upgrade to a 64-bit > > OK. > > > > Richard > > Using PAE, you can have >3.5 G of usable ram on a system. HOWEVER, each > individual process only has a 4GB virtual address space, so only 4G of ram > per process. If you have >1 memory-intensive process you can make use of 8G > of ram on a 32-bit system.
Right. But we're talking about BackupPC_nightly here which doesn't require loads of memory. As we can see in vmstat output, about 6 GB of RAM are used as disk cache. So we're on the safe side here regarding 32bit vs. 64bit. HTH, Tino. -- "What we nourish flourishes." - "Was wir nähren erblüht." www.lichtkreis-chemnitz.de www.tisc.de ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ BackupPC-users mailing list [email protected] List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
