https://bugzilla.wikimedia.org/show_bug.cgi?id=51473
Web browser: ---
Bug ID: 51473
Summary: Vagrant very slow with two processor setting and
IO-APIC conflict
Product: Tools
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: MediaWiki-Vagrant
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Mobile Platform: ---
My vagrant instance ran very slowly, 50 seconds to view any page. The vagrant
box info in Oracle VM VirtualBox Manager (4.2.10_ubuntu) looks OK, but when I
click Settings, it warns
Non-optimal settings detected. ... you have assigned more than one virtual CPU
to this VM. This will not work unless the IO-APIC feature is also enabled. This
will be done... [when you press OK].
One problem is VBox Manager actually doesn't change this setting if vagrant is
running, it can't change it until you run `vagrant halt`. After halting
vagrant, VBox Manager > Settings does update it, and thereafter Vagrant runs
about 9x faster!
Ori asked me to report a bug, mentioning that the Vagrantfile sets
vb.customize ['modifyvm', :id, '--cpus', '2']
My Vagrant instance is months old, maybe this IO-APIC conflict doesn't occur
any more. If it does, perhaps this line should be commented out and users
should be recommended in installation instructions to review settings in
VirtualBox Manager. I added a section
https://www.mediawiki.org/wiki/MediaWiki-Vagrant/Troubleshooting#If_vagrant_is_slow
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