[pve-devel] Fw: Error in PVE with win2008r2 and 256GB RAM

[Cesar Peschiera]

Hi Alexandre

Many thanks for your answer, but i am not sure if it is a good idea due to 
that i don't understand the advantage since that i can disable the huge 
pages of this mode:

shell> vim /etc/default/grub:
GRUB_CMDLINE_LINUX_DEFAULT="...transparent_hugepage=never"

shell> update-grub

Moreover, i have a serious problem with the PVE cluster communication in two 
of eight PVE nodes, and with a VM, if you can help me, i will be extremely 
grateful, please see this link:
http://forum.proxmox.com/threads/20523-Quorum-problems-with-PVE-2-3-and-3-3?p=104995#post104995

Best regards
Cesar

> ----- Original Message ----- 
> From: "Alexandre DERUMIER" <aderumier at odiso.com>
> To: "Cesar Peschiera" <brain at click.com.py>
> Cc: "pve-devel" <pve-devel at pve.proxmox.com>
> Sent: Thursday, December 18, 2014 2:24 AM
> Subject: Re: [pve-devel] Error in PVE with win2008r2 and 256GB RAM
>
>
> Note that currently,
>
> hugepages are managed with transparent hugepage mecanism.
>
> But it's seem that we can defined manually hugepages by numa nodes
>
> -object
> memory-backend-file,prealloc=yes,mem-path=/dev/hugepages/libvirt/qemu,size=1024M,id=ram-node0
> -numa node,nodeid=0,cpus=0,memdev=ram-node0
> -object
> memory-backend-file,prealloc=yes,mem-path=/dev/hugepages/libvirt/qemu,size=1024M,id=ram-node1
> -numa node,nodeid=1,cpus=1,memdev=ram-node1
>
>
> I'll try to make a patch if you want to test.
>
>
> ----- Mail original -----
> De: "aderumier" <aderumier at odiso.com>
> À: "Cesar Peschiera" <brain at click.com.py>
> Cc: "pve-devel" <pve-devel at pve.proxmox.com>
> Envoyé: Jeudi 18 Décembre 2014 06:15:44
> Objet: Re: [pve-devel] Error in PVE with win2008r2 and 256GB RAM
>
>>>Moreover, i guess that i have problems of Hugapages.
>
> I have found interesting blog:
>
> http://developerblog.redhat.com/2014/03/10/examining-huge-pages-or-transparent-huge-pages-performance/
>
> It's explain how to see if hugepage impact performance or not.
>
>
>
> ----- Mail original ----- 
> De: "Cesar Peschiera" <brain at click.com.py>
> À: "aderumier" <aderumier at odiso.com>, "pve-devel"
> <pve-devel at pve.proxmox.com>
> Envoyé: Jeudi 18 Décembre 2014 03:44:33
> Objet: Re: [pve-devel] Error in PVE with win2008r2 and 256GB RAM
>
> Hi Alexandre
>
> I have installed your patches and with some test of MS-SQL-Server, i see a
> better behavior in terms of speed (soon i will give the comparisons).
>
> Moreover, i guess that i have problems of Hugapages.
> Please see this link, and answer me if you can:
> http://forum.proxmox.com/threads/20449-Win2008R2-exaggeratedly-slow-with-256GB-RAM-and-strange-behaviours-in-PVE?p=104996#post104996
>
>
> ----- Original Message ----- 
> From: "Alexandre DERUMIER" <aderumier at odiso.com>
> To: "Cesar Peschiera" <brain at click.com.py>
> Cc: <pve-devel at pve.proxmox.com>
> Sent: Tuesday, December 02, 2014 9:50 AM
> Subject: Re: [pve-devel] Error in PVE with win2008r2 and 256GB RAM
>
>
> Hi,
> can you test this:
>
> http://odisoweb1.odiso.net/pve-qemu-kvm_2.2-2_amd64.deb
> http://odisoweb1.odiso.net/qemu-server_3.3-5_amd64.deb
>
>
> then edit your vm config file:
>
>
> sockets: 2
> cores: 4
> memory: 262144
> numa0: memory=131072,policy=bind
> numa1: memory=131072,policy=bind
>
>
> (you need 1 numa by socket, total numa memory must be equal to vm memory).
>
> you can change cores number if you want.
>
>
> and start the vm ?
>
>
> ----- Mail original ----- 
>
> De: "Alexandre DERUMIER" <aderumier at odiso.com>
> À: "Cesar Peschiera" <brain at click.com.py>
> Cc: pve-devel at pve.proxmox.com
> Envoyé: Mardi 2 Décembre 2014 12:40:29
> Objet: Re: [pve-devel] Error in PVE with win2008r2 and 256GB RAM
>
> Hi,
>
> some news.
>
> It's seem that current proxmox qemu build don't have numa support enable.
>
> So, previous command line don't work.
>
>
> I'll send a patch for pve-qemu-kvm and also to add numa options to vm 
> config
> file.
>
>
>
> ----- Mail original ----- 
>
> De: "Alexandre DERUMIER" <aderumier at odiso.com>
> À: "Cesar Peschiera" <brain at click.com.py>
> Cc: pve-devel at pve.proxmox.com
> Envoyé: Mardi 2 Décembre 2014 07:05:47
> Objet: Re: [pve-devel] Error in PVE with win2008r2 and 256GB RAM
>
>>>at i would like to ask you if you can give me your suggestions in
>>>practical terms, besides the brief theoretical explanation, this is due 
>>>to
>>>that i am not a developer and i don't understand as apply it in my PVE.
>
> About the command line, each vm is a kvm process.
>
> So start your vm with current config, do a "ps -aux" , copy the big 
> "kvm -id
> ... " command line for your vm,
>
> stop the vm.
>
> then,
>
> add my specials lines about numa,
>
> and paste the command line to start the vm !
>
>
> (kvm is so simple ;)
>
>
> _______________________________________________
> pve-devel mailing list
> pve-devel at pve.proxmox.com
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
> _______________________________________________
> pve-devel mailing list
> pve-devel at pve.proxmox.com
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
> _______________________________________________
> pve-devel mailing list
> pve-devel at pve.proxmox.com
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
> _______________________________________________
> pve-devel mailing list
> pve-devel at pve.proxmox.com
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
> _______________________________________________
> pve-devel mailing list
> pve-devel at pve.proxmox.com
> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
>