Hi, I was running xenoprof on xen-3.0.4 and see "hypercall" and "hypercall_page" as one of the primary overhead for a benchmark. I am confused about both? Are they functions ? Does "hypercall" represents all the hypercall or its a function pointer. I am novice to xen. A little explanation will help my understanding. -John _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
can someone help me with this On 8/16/07, John mathews <john.xen@gmail.com> wrote:> > Hi, > > I was running xenoprof on xen-3.0.4 and see "hypercall" and > "hypercall_page" as one of the primary overhead for a benchmark. I am > confused about both? Are they functions ? Does "hypercall" represents all > the hypercall or its a function pointer. I am novice to xen. A little > explanation will help my understanding. > > -John >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Keir Fraser
2007-Aug-30 10:21 UTC
[Xen-users] Re: [Xen-devel] Re: questions about hypercall and xenoprof
>From the guest point of view all hypercall execution time is spent with theguest program counter in the hypercall page. I haven¹t used xenoprof much myself, but I expect that¹s what you¹re seeing here. The code sequences in the hypercall page are only a few instructions long, so you¹d have to execute them a lot to actually spend much time really executing within the hypercall page! -- Keir On 23/8/07 00:38, "John mathews" <john.xen@gmail.com> wrote:> can someone help me with this > > On 8/16/07, John mathews <john.xen@gmail.com> wrote: >> Hi, >> >> I was running xenoprof on xen-3.0.4 and see "hypercall" and "hypercall_page" >> as one of the primary overhead for a benchmark. I am confused about both? >> Are they functions ? Does "hypercall" represents all the hypercall or its a >> function pointer. I am novice to xen. A little explanation will help my >> understanding. >> >> -John >> > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users