[ipxe-devel] ROM timeout adjust

Gerd Hoffmann kraxel at redhat.com
Thu Sep 17 16:12:08 UTC 2015


> 2. One of debian's main uses of ipxe is to provide network roms for
> qemu (a machine emulator) in this use case, the ipxe delay may
> depending on other factors double the startup time of a virtual
> machine (I am sometimes slow slow and have used a thirty second delay
> on a virtual machine that boots in less than ten seconds do give me
> time to start vnc or terminal emulator). On a production virtual
> machine 99% of the time you do not need or want any delay here. On a
> debug setup five seconds may not be long enough as it is common to
> need to switch to another window to view the virtual machine's console
> or some log.

Just build with CONFIG=qemu.  That will will pick up the config from
src/config/qemu/general.h.  Load time delay is disabled, boot time delay
is 3 seconds (but only when actually doing a network boot).  You will
not notice ipxe in your guest unless you start qemu with a unbootable
disk or explicitly ask for network boot (qemu -boot=n).


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