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The time based scheduler poll context busy status at every micro-second during vGPU switch, it will make GPU idle for a while when the context is very small and completed before the next micro-second arrival. Trigger scheduling immediately after context complete will eliminate GPU idle and improve performance. Create two vGPU with same type, run Heaven simultaneously: Before this patch: +---------+----------+----------+ | | vGPU1 | vGPU2 | +---------+----------+----------+ | Heaven | 357 | 354 | +-------------------------------+ After this patch: +---------+----------+----------+ | | vGPU1 | vGPU2 | +---------+----------+----------+ | Heaven | 397 | 398 | +-------------------------------+ v2: Let need_reschedule protect by gvt-lock. Signed-off-by: Ping Gao <ping.a.gao@intel.com> Signed-off-by: Weinan Li <weinan.z.li@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.