search for: mem_paging

The following two patches are about how to speed up in xenpaging when page in pages. On suse11-64 with 4G memory,if we page out 2G pages,it will cost about 15.5 seconds, but take 2088 seconds to finish paging in.If page-in costs too much time,it will cause unmesurable problems when vm or dom0 access the paged_out page,such as BSOD,crash. What鈥檚 more,the dom0 is always in high I/O pressure.

...xen-access by using an independent ring buffer for each feature. Please review. v2: - update mem_event_check_ring arguments, check domain rather than domain_id - check ring_full first because its value was just evaluated - check if ring buffer is initialized before calling mem_access_domctl/mem_paging_domctl Olaf tools/libxc/Makefile | 2 tools/libxc/xc_mem_access.c | 21 ++- tools/libxc/xc_mem_event.c | 15 -- tools/libxc/xc_mem_paging.c | 33 +++- tools/libxc/xc_memshr.c | 16 +- tools/libxc/xenctrl.h | 9 - to...

...ion, and having the hypervisor memcpy from that buffer into the newly prepped page before promoting the gfn type. Second patch is a tools patch, cc''ed maintainers. Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org> xen/arch/x86/mm/mem_event.c | 2 +- xen/arch/x86/mm/mem_paging.c | 2 +- xen/arch/x86/mm/p2m.c | 52 +++++++++++++++++++++++++++++++++++++++++-- xen/include/asm-x86/p2m.h | 2 +- xen/include/public/domctl.h | 8 +++++- tools/libxc/xc_mem_event.c | 4 +- tools/libxc/xc_mem_paging.c | 23 +++++++++++++++++++ tools/libxc/xenctrl.h |...

Hi How do we get the number of page faults done by a guest in a scheduling epoch? Assuming only one VCPU per guest, can I get it from vcpu_info[]? I hope this is not a vey trivial question :) thanks Chintu -- View this message in context: http://xen.1045712.n5.nabble.com/Getting-the-page-fault-count-for-domU-tp4847541p4847541.html Sent from the Xen - Dev mailing list