[Xen-users] xenpm (p-state) does not work

[tutu sky <ooohooo_u@xxxxxxxxxxx>]

hi all,
i compiled xen 4.4.2 on ubuntu 14.04 and wrote 'cpufreq=xen' in xen command 
line options.
but unfortunately, when using xenpm, i encountered the problem that: "invalid 
argument"; especially when i try set gornover, also 'xenpm get-cpufreq-states' 
gives me nothing.
I go to this address:
http://xenserver.org/partners/developing-products-for-xenserver/19-dev-help/138-xs-dev-perf-turbo.html

and as it mentioned, i try doing the instruction bellow before trying for 
setting gornover:
/opt/xensource/libexec/xen-cmdline --set-xen cpufreq=xen:performance

but bash give me the error about: no such file or directory.
so what should i do? is something wrong?

thanks and regards.

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