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appliance: Reenable ACPI.

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Previously I disabled ACPI because it was not necessary and was slow.
However measuring it again now, I can see no significant difference in
performance, and it is necessary if we are going to use DAX.

It's also useful to keep the appliance kernel state as similar to the
ordinary state, and setting acpi=off is a massive change to the way
that the kernel boots.

Therefore, reenable it.
This commit is contained in:
Richard W.M. Jones
2016-05-16 22:29:58 +01:00
parent aec89b62be
commit db1f811b29
1 changed files with 0 additions and 1 deletions
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src/launch.c
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@@ -367,7 +367,6 @@ guestfs_int_appliance_command_line (guestfs_h *g, const char *appliance_dev,
" udev.event-timeout=6000" /* for newer udevd */
" no_timer_check" /* fix for RHBZ#502058 */
"%s" /* lpj */
" acpi=off" /* ACPI is slow - 150-200ms extra on my laptop */
" printk.time=1" /* display timestamp before kernel messages */
" cgroup_disable=memory" /* saves us about 5 MB of RAM */
" usbcore.nousb" /* disable USB, only saves about 1ms */