[ipxe-devel] iPXE hogging CPU in a virtualized environment?

[Alessandro Salvatori]

This is the output of extop from a 12 cores host with a few idle virtual
machines and one virtual machine attempting to netboot via ipxe:

     ID    GID NAME             NWLD   %USED    %RUN    %SYS   %WAIT    %RDY
  %IDLE  %OVRLP   %CSTP  %MLMTD  %SWPWT
      1      1 idle               24 1097.88 1200.00    0.00    0.00  101.17
   0.00    1.45    0.00    0.00    0.00
   1948   1948 netbooting-vm       4  111.58  101.05    0.00  302.90    0.01
   0.00    0.06    0.00    0.00    0.00

the netbooting-vm has a full core reservation (2.4 GHz) and the netboot
server is powered off, so that no transfer would actually take place and i
can observe the so-to-speak "baseline" CPU utilization.

when the other virtual machines are not idle but actually doing some work,
this affects their performances and that's the reason I went and took a look
at it...

thank you in advance!
-alessandro-
 Here i am, A young man,
 A crashing computer program,
 Here is a pen, write out my name.
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