[GitHub] [cloudstack] DennisKonrad edited a comment on issue #3923: cputune shares in domain xml set without CPU cap enabled

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DennisKonrad edited a comment on issue #3923: cputune shares in domain xml set without CPU cap enabled
URL: https://github.com/apache/cloudstack/issues/3923#issuecomment-593866590
 
 
   2 Cores * 1000 MHz / 10 = 200
   
   In reality theres 66 set. Did I get you right on the calculation? @weizhouapache
   
   **EDIT**
   I found why the shares are not set correctly anymore. In our last update the qemu.conf got replaced and there were no controllers configured. After repairing that the values match beween XML, schedinfo and cgroup.
   
   ```
   <domain type='kvm' id='148'>
   ...
     <currentMemory unit='KiB'>4194304</currentMemory>
     <vcpu placement='static'>2</vcpu>
     <cputune>
       <shares>66</shares>
     </cputune>
   ```
   
   Schedinfo is already wrong:
   ```
   Scheduler      : posix
   cpu_shares     : 1024
   vcpu_period    : 100000
   vcpu_quota     : -1
   ...
   ```
   
   Cgroup (or CFS) shares are set falsely set also (as one would expect):
   ```
   # cat cpu.shares
   1024
   # pwd
   /sys/fs/cgroup/cpu/machine.slice/machine-qemu\x2d148\x2di\x2d331\x2d2003\x2dVM.scope
   ```

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