On Sat, 2016-01-23 at 09:27 -0600, Robert Nichols wrote: > On 01/22/2016 11:02 AM, Ed Heron wrote: > > I'm still running CentOS 5 with Xen. > > > > We recently replaced a virtual host system board with an Intel > > S1400FP4, so the host went from a 4 core Xeon with 32G RAM to a 6 core > > Xeon with 48G RAM, max 96G. The drives are SSD. > > > > I was recently asked to move an InterBase server from Windows 7 to > > Windows Server. The database is 30G. > > > > I'm speculating that if I put the database on a 35G virtual disk and > > mirror it to a 35G RAM disk, the speed of database access might improve. > > If that were running under Linux rather than Windows I'd suggest just > giving that extra 35GB to its kernel and letting its normal caching > keep everything in RAM. Whether Windows (7 or Server) would be clever > enough to do that is another question. Of course you could just let > the Linux host do the caching, but that runs the risk of other VMs > or host activity displacing some of that cache and affecting the > performance of your database VM. > Yes... You've got much of my thought process. The RAM disk mirror pre-loads the database into memory and forces it to stay in RAM. _______________________________________________ CentOS-virt mailing list CentOS-virt@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos-virt
