22 Oct
2018
22 Oct
'18
6:54 p.m.
It's working now: wrsroot@compute-0 ~(keystone_admin)]$ openstack flavor set m1.small --property hw:mem_page_size=1GB [wrsroot@compute-0 ~(keystone_admin)]$ openstack server create --image cirros --flavor m1.small --nic net-id=net3 testvm [wrsroot@compute-0 ~(keystone_admin)]$ openstack server show testvm +-------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Field | Value | +-------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | wrs-res:pci_devices | | | wrs-res:topology | node:0, 1024MB, pgsize:1G, vcpus:0-3, pol:sha | | wrs-res:vcpus | [4, 4, 4] | | wrs-sg:server_group | | +-------------------------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ Thanks ! -Richo > -----Original Message----- > From: Michel Thebeau [mailto:michel.thebeau@windriver.com] > Sent: Monday, October 22, 2018 11:18 AM > To: Perez, Ricardo O <ricardo.o.perez@intel.com>; starlingx- > discuss@lists.starlingx.io > Subject: Re: [Starlingx-discuss] Question - Using 1Gb mem pages > > Hi Ricardo, > > I was able to select 4K and 2M pages in the following way (attached txt file). I'll > try to see if I can get a system up with 1G pages, and I'll follow up with you. > > > > M > > > On 2018-10-22 10:59 a.m., Michel Thebeau wrote: > > Hi Ricardo, > > > > The documentation indicates to configure the the huge pages per numa > > node on the compute, and to configure the flavour extra specs for the > > VM. I am not aware of anything else in particular. There's some tips > > and caveats in the document, but I don't see anything in your message > > to think of those. > > > > If there's any chance you are trying to do this under virtualization, > > I am not aware that that is currently supported. > > > > M > > > > > > On 2018-10-19 6:14 p.m., Perez, Ricardo O wrote: > >> Hi Michael, > >> > >> Thanks for your answer, I just forgot to put the computes information > >> about memory configuration, here is the info: > >> > >> Compute-0 > >> > >> VM Pages > >> 0 Reserved for Platform: 8000 MiB > >> Usable Total: 86387 MiB > >> Available: 84787 MiB > >> 4K Pages: > >> Total: 230656 > >> 2M Hugepages: > >> Total: 1271 > >> Available: 983 > >> 1G Hugepages: > >> Total: 80 > >> Available: 80 > >> > >> 1 Reserved for Platform: 2000 MiB > >> Usable Total: 93698 MiB > >> Available: 92674 MiB > >> 4K Pages: > >> Total: 29696 > >> 2M Hugepages: > >> Total: 5319 > >> Available: 5319 > >> 1G Hugepages: > >> Total: 80 > >> Available: 80 > >> > >> *********************************** > >> Compute-1 > >> Processor > >> Memory > >> VM Pages > >> 0 Reserved for Platform: 8000 MiB > >> Usable Total: 86504 MiB > >> Available: 84968 MiB > >> 4K Pages: > >> Total: 0 > >> 2M Hugepages: > >> Total: 1780 > >> Available: 1524 > >> 1G Hugepages: > >> Total: 80 > >> Available: 80 > >> > >> 1 Reserved for Platform: 2000 MiB > >> Usable Total: 93552 MiB > >> Available: 92528 MiB > >> 4K Pages: > >> Total: 0 > >> 2M Hugepages: > >> Total: 5304 > >> Available: 5304 > >> 1G Hugepages: > >> Total: 80 > >> Available: 80 > >> > >> Am I missing something else to made use of 1G memory pages ? > >> > >> Thanks > >> -Richo > >> > >>> -----Original Message----- > >>> From: Michel Thebeau [mailto:michel.thebeau@windriver.com] > >>> Sent: Friday, October 19, 2018 1:39 PM > >>> To: Perez, Ricardo O <ricardo.o.perez@intel.com>; starlingx- > >>> discuss@lists.starlingx.io > >>> Subject: Re: [Starlingx-discuss] Question - Using 1Gb mem pages > >>> > >>> On 2018-10-19 1:45 p.m., Perez, Ricardo O wrote: > >>>> Hello, > >>>> > >>>> I'm trying to execute a test, which his goal is to made use of huge > >>>> pages (2M / > >>> 1G) launching a VM. > >>>> I have already verified the configuration of the controllers GRUB > >>>> options and > >>> we have defined the variable hugepagesz=1G, however, inside the same > >>> parameters list, there is a "default_hugepagesz=2M". The default > >>> hugepagesz, has been modified to 1G, and the compute has been > >>> restarted with no issues. > >>> > >>> > >>> Hi Ricardo, > >>> > >>> You wrote, "controllers GRUB options" then "the compute has been > >>> restarted with no issues". Is there a GRUB option one can configure > >>> on the controller that is for the computes? I don't remember seeing > >>> one. If you're actually changing /etc/default/grub, I doubt that's > >>> supported. > >>> I did not find a procedure for changing default_hugepagesz on > >>> controllers or computes grub configuration. > >>> > >>> It's supposed to be an option, for example through in horizon > >>> interface or 'system host-memory-modify'... but you didn't quote > >>> either of those. > >>> > >>> > >>>> The flavor has been modified, with the following option: " > >>> hw:mem_page_size=104875" (1G) page. > >>> > >>> > >>> Is "104875" a typo? It looks a lot like 1024 * 1024 = 1048576, but > >>> not quite. > >>> > >>> > >>> M > >>> > >>> > >>>> However when I launch a VM using the modified flavor it creates the > >>>> VM, but if > >>> I check the field values of the VM using " openstack server show > >>> <vm_name>". > >>> I'm getting the following value for pgsize: > >>>> wrs-res:topology | node:0, 512MB, pgsize:2M, > >>>> vcpus:0, pol:sha | > >>>> > >>>> So, seems like it's still taking the 2M pagesize instead of the 1G. > >>>> > >>>> What I have already tried is to: > >>>> > >>>> * Change also the image metadata: hw:mem_page_size=large and > >>>> also > >>> 104875. Result, VM launched successfully, but pgsize value still 2M. > >>> > >>> There's the interesting "104875" again. > >>> > >>> > >>>> * Leave the GRUB default values, and use modified flavor to > >>> hw:mem_page_size=104875, launch the VM with ERROR status. > >>> > >>> 104875 > >>> > >>>> * Leave the GRUB default values, and use modified flavor to > >>> hw:mem_page_size=2048, launch the VM with success, , pgsize value is > >>> 2M, which is expected, ok. > >>>> * Leave the GRUB default values, and use modified flavor to > >>> hw:mem_page_size=small launch the VM with success, , pgsize value is > >>> 4k, which is expected, ok. > >>>> * Leave the GRUB default values, and use modified flavor to > >>> hw:mem_page_size=any launch the VM with success, , pgsize value is > >>> 2M, which is expected, ok. > >>>> Could be this an issue trying to use 1G mem pages or do I'm missing > >>>> some > >>> other configuration parameter? > >>>> Thanks in advance for your help > >>>> > >>>> > >>>> _______________________________________________ > >>>> Starlingx-discuss mailing list > >>>> Starlingx-discuss@lists.starlingx.io > >>>> http://lists.starlingx.io/cgi-bin/mailman/listinfo/starlingx-discus > >>>> s > >