Juergen Gross
2009-Oct-16 12:40 UTC
[Xen-devel] [Patch] per-domain switch to disable oos shadow page tables
Hi, attached is a patch to be able to switch off OOS shadow page table optimization per domain. This enables BS2000 to run on non-hap hw with more than 4 vcpus with reasonable performance (8 vcpus are slower than 4 vcpus with OOS enabled). Specifiying oos = 0 in the domain config file will switch off OOS optimization, oos=1 is the default. The resulting performance is nearly the same as with OOS switches off at compile time. Tested on a x86_64 machine, compilation for 32 bit is okay. Juergen -- Juergen Gross Principal Developer Operating Systems TSP ES&S SWE OS6 Telephone: +49 (0) 89 636 47950 Fujitsu Technolgy Solutions e-mail: juergen.gross@ts.fujitsu.com Otto-Hahn-Ring 6 Internet: ts.fujitsu.com D-81739 Muenchen Company details: ts.fujitsu.com/imprint.html _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel