virtio module question...

virtio module question...

[Vasiliy G Tolstov]

Good night or morning....

If i need to some kvm module, that runs in virtualized environment and
reports some statistics to qemu (disk free space, memory usage, cpu
utilization) what i need to write? 
I need kernel module, because userspace utilities under heavy load can't send such information via
network (for example snmp under load does not respond).

Does kvm have skeleton module, what i can use and append code needed
for me?

Or how can i get such information?

Thank You. Sorry for bad English.

-- 
Vasiliy G Tolstov <v.tolstov@selfip.ru>
Selfip.Ru

Re: virtio module question...

[Avi Kivity]

  On 07/30/2010 12:13 PM, Vasiliy G Tolstov wrote:
> Good night or morning....
>
> If i need to some kvm module, that runs in virtualized environment and
> reports some statistics to qemu (disk free space, memory usage, cpu
> utilization) what i need to write?
> I need kernel module, because userspace utilities under heavy load can't send such information via
> network (for example snmp under load does not respond).
>
> Does kvm have skeleton module, what i can use and append code needed
> for me?

I recommend using virtio-serial in userspace.  If your load is very 
high, you can use mlockall() and sched_setscheduler() to keep the 
process in memory and on a cpu.

If you absolutely need a kernel module, you can base it off virtio-serial.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.