Hello, Ivaylo! Friday, April 6, 2012, 5:48:51 PM, you wrote:
II> I have a strange performance problem with fb 2.5.X. My friend told me II> that a program that he uses is working faster when database is on II> Windows XP compared to database on Linux. I didn't believe and did some II> tests. I can't explain the results to myself. For the tests I've used mostly performance depends on disk and processor. disk drivers on Windows can be better or worse on Linux, resulting better or worse performance. No surprise. II> wait to finish. The tests were made on different virtual machine on II> VirtualBox Host. The host is Intel i3 2100T with 4GB DDR3 RAM and raid 5 II> array(linux software raid). Every virtual machine i've created was with II> similar parameters. 1GB RAM, 8GB HDD The results are: I'm very suspicious about test on virtual machines, especially VirtualBox. Again, performance depends on implementation of layer between virtual machine, used operating system, and hardware. By my tests performance on VMWare Desktop and Virtual PC is 1.5-2 times worse than on pure hardware, mostly on disk performance. So, I consider your tests unclear. -- Dmitry Kuzmenko, www.ib-aid.com
