Re: [Xen-devel] asterisk, ztdummy, and usb (and HZ = 100 under xen ???)

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 20 May 2005, at 02:54, James Harper wrote:

> The x86 arch sets the kernel internal timer to 1000HZ by default, but
> xen seems to set it to 100HZ (2.4 default).
>
> The ztdummy driver makes the assumption that under 2.6, HZ = 1000, but
> this isn't the case under xen which is probably the cause of all my
> problems.
>
> Is there a problem with me changing this, or is there a dynamic way to
> change this???
Having HZ differ between Xen and a guest doesn't really matter that 
much. The guest will get fewer upcalls than it expects, but it will 
count ten ticks for each upcall. So I doubt that thsi is your problem. 
Does ztdummy use the rtc driver? I'm not sure how weel we support that 
on Xen...
 -- Keir


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel