Xen users - Mar 2007 - xenperf and mini-os on xen 3.0.4_1 (2.6.16.33)

Hi all,

I just compiled and installed Xen-3.0.4_1.

1. My purpose is to use Xenperf tool for the pretty printing of hypercalls.
But no matter when I typed each of "xenperf -r", "xenperf
-p" and "xenperf
-f",
    I got "ERROR resetting performance counters: 38 (Function not
implemented)" or "ERROR getting perf counters: 38 (Function not
implemented)" .
    I added several debug lines into the main function in "xenperf.c",
for
example,
          --- printk("xc_handle = %d\n", xc_handle) after
"xc_handle xc_interface_open()"
          --- printk("iret = %d\n", iret) after  iret
xc_perfc_control(xc_handle, XEN_SYSCTL_PERFCOP_reset, NULL, NULL, NULL,
NULL) != 0
    Then I got xc_handle = 3.
                    iret = -1.
    I traced the source code of do_sysctl called by xc_perfc_control, and
the error number should be -EPERM (operation not permitted)


2. When I boot mini-os by "xm create -c domain_config". The periodic
thread
in minios just prints out no more than 100 lines of the time from
gettimeofday, and then does not print out time info any more.


Any help would be greatly appreciated!

Thank you,

-zheng


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On 3/15/07, Zheng CUI <zcui293@gmail.com> wrote:
>
> Hi all,
>
> I just compiled and installed Xen-3.0.4_1.
>
> 1. My purpose is to use Xenperf tool for the pretty printing of
> hypercalls. But no matter when I typed each of "xenperf -r",
"xenperf -p"
> and "xenperf -f", I got "ERROR resetting performance
counters: 38 (Function
> not implemented)" or "ERROR getting perf counters: 38 (Function
not
> implemented)" . Then I added several debug lines into the main
function in "
> xenperf.c", for example,
>           --- printk("xc_handle = %d\n", xc_handle) after
"xc_handle > xc_interface_open()"
>           --- printk("iret = %d\n", iret) after  iret >
xc_perfc_control(xc_handle, XEN_SYSCTL_PERFCOP_reset, NULL, NULL, NULL,
> NULL) != 0
>   Then I got xc_handle = 3. iret = -1.
>   I traced the source code of do_sysctl called by xc_perfc_control, and
> the error number should be -EPERM (operation not permitted)
>
>
> 2. When I boot mini-os by "xm create -c domain_config". The
periodic
> thread in minios just prints out no more than 100 lines of the time from
> gettimeofday, and then does not print out time info any more.
>
>
> Any help would be greatly appreciated!
>
> Thank you,
>
> -zheng
>
>

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Hi, zheng

I guess you should see xen/Rules.mk at first.

And, Isaku''s configuration is helpful. (at end of following article)
http://lists.xensource.com/archives/html/xen-ia64-devel/2006-09/msg00077.html

Also see 
http://www.cl.cam.ac.uk/research/srg/netos/xen/readmes/user.pdf

Thanks
Atsushi SAKAI

"Zheng CUI" <zcui293@gmail.com> wrote:
> Hi all,
> 
> I just compiled and installed Xen-3.0.4_1.
> 
> 1. My purpose is to use Xenperf tool for the pretty printing of hypercalls.
> But no matter when I typed each of "xenperf -r", "xenperf
-p" and "xenperf
> -f",
>     I got "ERROR resetting performance counters: 38 (Function not
> implemented)" or "ERROR getting perf counters: 38 (Function not
> implemented)" .
>     I added several debug lines into the main function in
"xenperf.c", for
> example,
>           --- printk("xc_handle = %d\n", xc_handle) after
"xc_handle > xc_interface_open()"
>           --- printk("iret = %d\n", iret) after  iret >
xc_perfc_control(xc_handle, XEN_SYSCTL_PERFCOP_reset, NULL, NULL, NULL,
> NULL) != 0
>     Then I got xc_handle = 3.
>                     iret = -1.
>     I traced the source code of do_sysctl called by xc_perfc_control, and
> the error number should be -EPERM (operation not permitted)
> 
> 
> 2. When I boot mini-os by "xm create -c domain_config". The
periodic thread
> in minios just prints out no more than 100 lines of the time from
> gettimeofday, and then does not print out time info any more.
> 
> 
> Any help would be greatly appreciated!
> 
> Thank you,
> 
> -zheng


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