The hugepages are no longer a hook, but part of the code base. They can be configured via engine property `hugepages`, where the value of property is size of the pages in KiB (1048576 = 1G, 2048 = 2M). Specifying any other size not supported by the architecture (or just "1") will use platform's default hugepage size. On Mon, Sep 18, 2017 at 11:39 AM, Gianluca Cecchi <gianluca.cecchi@gmail.com> wrote:
Hello, I would like to go again in deep with what preliminary tested and already discussed here:
http://lists.ovirt.org/pipermail/users/2017-April/081320.html
I'm testing an oVirt node in 4.1.6-pre
I don't find the vdsm hook for huge pages; doing a search I get these:
vdsm-hook-ethtool-options.noarch : Allow setting custom ethtool options for vdsm controlled nics vdsm-hook-fcoe.noarch : Hook to enable FCoE support vdsm-hook-openstacknet.noarch : OpenStack Network vNICs support for VDSM vdsm-hook-vfio-mdev.noarch : Hook to enable mdev-capable devices. vdsm-hook-vhostmd.noarch : VDSM hook set for interaction with vhostmd vdsm-hook-vmfex-dev.noarch : VM-FEX vNIC support for VDSM
Did anything change between 4.1.1 and 4.1.5/4.1.6?
I'm making preliminary tests with an Oracle RDBMS and HammerDB in both a physical server and a "big" VM inside another same hw server configured with oVirt.
Results are not bad, but I would like to see having huge pages inside the guest how could change results.
Just for reference:
The 2 Physical server are blades with each one: 2 sockets, each one with 14 cores and ht enabled, so in total 56 computational threads 256Gb ram huge pages enabled
VM configured with this virtual hw on one of them: 2 sockets, each one with 6 cores and ht so in total 24 computational threads 64Gb ram no huge pages at the moment
Oracle SGA is 32Gb on both physical rdbms and virtual one.
Thanks for any insight to test huge pages in guest
Gianluca
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