From zhangjian2011 at cn.fujitsu.com Wed Aug 12 06:15:50 2015 Content-Type: multipart/mixed; boundary="===============4270950829814431145==" MIME-Version: 1.0 From: zhangjian2011 To: users at ovirt.org Subject: [ovirt-users] CPU Threads Help!!! Date: Wed, 12 Aug 2015 18:06:11 +0800 Message-ID: <55CB1A93.6070501@cn.fujitsu.com> --===============4270950829814431145== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable --------------020500020201060207010309 Content-Type: text/plain; charset=3D"UTF-8"; format=3Dflowed Content-Transfer-Encoding: 8bit Hi, Guys Recently I am investigating the Optimization Policy in Cluster and try = to use =E2=80=9CCPU Threads=E2=80=9D. As the manual of description: =3D=3D=3D=3D=3D=3D=3D=3D For example, a 24-core system with 2 threads per core (48 threads total) can run virtual machines with up to 48 cores each =3D=3D=3D=3D=3D=3D=3D=3D My host CPU is i3-2120 CPU (2 cores 4 threads) So I think the expect result case is : 1. If the =E2=80=9CCount Threads As Cores=E2=80=9D *disable*, we can=E2=80= =99t run virtual vm = with above 2 vCPU 2. If the =E2=80=9CCount Threads As Cores=E2=80=9D *enable*, we can=E2=80= =99t run virtual vm = with above 4 vCPU Now the problem is about result case 1: 1. When I set =E2=80=9CCount Threads As Cores=E2=80=9D *disable*, I still c= an run = virtual vm with 4 vCPU Can anyone help me to explain it ??? Regards, Jian --------------020500020201060207010309 Content-Type: text/html; charset=3D"UTF-8" Content-Transfer-Encoding: 8bit

Hi, Guys<= /p> Recently I am investigating the Optimization Policy in Cluster and try to use =E2=80=9CCPU Threads=E2=80=9D.=

As the manual of description:

=3D=3D=3D=3D=3D=3D=3D=3D

= For example, a 24-core

= system with 2 threads per core (48

= threads total) can run virtual machines with

up to 48 cores each=

=3D=3D=3D=3D=3D=3D=3D=3D

=C2=A0

My host CPU is

i3-2120 CPU=C2=A0 (2 cores 4 threads)

=C2=A0

So I think the expect result case is :

1. If the =E2=80=9C<= span style=3D"font-family:"Arial Unicode MS","sans-serif";color:black;background:white" lang=3D"EN-US">Count Threads As Cores= =E2=80=9D disable, we can=E2=80=99t run virtual vm with above 2 vCPU<= o:p>

2. If the =E2=80=9C<= span style=3D"font-family:"Arial Unicode MS","sans-serif";color:black;background:white" lang=3D"EN-US">Count Threads As Cores= =E2=80=9D enable, we can=E2=80=99t run virtual vm with above 4 vCPU<= o:p>

=C2=A0

Now the problem is about result case 1:

1. When I set =E2=80=9CCount Threads As Cores= =E2=80=9D disable, I still can run virtual vm with 4 vCPU<= /span>

=C2=A0

Can anyone help me to explain it ???

Regards,
Jian
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Date: Wed, 12 Aug 2015 06:55:49 -0400 Message-ID: <320993691.11987871.1439376949049.JavaMail.zimbra@redhat.com> In-Reply-To: 55CB1A93.6070501@cn.fujitsu.com --===============2585356262543015228== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Can you please provide output of lscpu for your host please. Thanks ----- Original Message ----- From: "zhangjian2011" To: users(a)ovirt.org Sent: Wednesday, August 12, 2015 1:06:11 PM Subject: [ovirt-users] CPU Threads Help!!! Hi, Guys Recently I am investigating the Optimization Policy in Cluster and= try to use =E2=80=9C CPU Threads =E2=80=9D. = As the manual of description: = =3D=3D=3D=3D=3D=3D=3D=3D = For example, a 24-core = system with 2 threads per core (48 = threads total) can run virtual machines with = up to 48 cores each = =3D=3D=3D=3D=3D=3D=3D=3D = My host CPU is = i3-2120 CPU (2 cores 4 threads) = So I think the expect result case is : = 1. If the =E2=80=9C Count Threads As Cores =E2=80=9D disable , we can=E2=80= =99t run virtual vm with above 2 vCPU = 2. If the =E2=80=9C Count Threads As Cores =E2=80=9D enable , we can=E2=80= =99t run virtual vm with above 4 vCPU = Now the problem is about result case 1: = 1. When I set =E2=80=9C Count Threads As Cores =E2=80=9D disable , I still = can run virtual vm with 4 vCPU = Can anyone help me to explain it ??? = Regards, = Jian = _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users --===============2585356262543015228==-- From rgolan at redhat.com Thu Aug 13 01:54:55 2015 Content-Type: multipart/mixed; boundary="===============8796208214966568108==" MIME-Version: 1.0 From: Roy Golan To: users at ovirt.org Subject: Re: [ovirt-users] CPU Threads Help!!! Date: Thu, 13 Aug 2015 08:54:50 +0300 Message-ID: <55CC312A.7060306@redhat.com> In-Reply-To: 320993691.11987871.1439376949049.JavaMail.zimbra@redhat.com --===============8796208214966568108== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On 08/12/2015 01:55 PM, Artyom Lukianov wrote: > Can you please provide output of lscpu for your host please. > Thanks > ----- Original Message ----- > From: "zhangjian2011" > To: users(a)ovirt.org > Sent: Wednesday, August 12, 2015 1:06:11 PM > Subject: [ovirt-users] CPU Threads Help!!! > > > > Hi, Guys Recently I am investigating the Optimization Policy in Cluster a= nd try to use =E2=80=9C CPU Threads =E2=80=9D. > > As the manual of description: > > =3D=3D=3D=3D=3D=3D=3D=3D > > For example, a 24-core > > system with 2 threads per core (48 > > threads total) can run virtual machines with > > up to 48 cores each > > =3D=3D=3D=3D=3D=3D=3D=3D > > > > My host CPU is > > i3-2120 CPU (2 cores 4 threads) > > > > So I think the expect result case is : > > 1. If the =E2=80=9C Count Threads As Cores =E2=80=9D disable , we can=E2= =80=99t run virtual vm with above 2 vCPU > > 2. If the =E2=80=9C Count Threads As Cores =E2=80=9D enable , we can=E2= =80=99t run virtual vm with above 4 vCPU > > > > Now the problem is about result case 1: > > 1. When I set =E2=80=9C Count Threads As Cores =E2=80=9D disable , I stil= l can run virtual vm with 4 vCPU > > Can anyone help me to explain it ??? Like Artyom mentioned, it best to see your lscpu output but my guess is = that the 4 threads is actually 2 per core. And there are 2 core and 2 sockets. this means 4 cpus without hyper = threading and 8 with. BTW the Host "General" subtab on the webadmin should output all this = info as well. Check it out. > Regards, > Jian > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users --===============8796208214966568108==-- From shuriku at shurik.kiev.ua Thu Aug 13 11:01:45 2015 Content-Type: multipart/mixed; boundary="===============8407417381751816996==" MIME-Version: 1.0 From: Alexandr Krivulya To: users at ovirt.org Subject: Re: [ovirt-users] CPU Threads Help!!! Date: Thu, 13 Aug 2015 17:42:56 +0300 Message-ID: <55CCACF0.2080604@shurik.kiev.ua> In-Reply-To: 55CC312A.7060306@redhat.com --===============8407417381751816996== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 13.08.2015 08:54, Roy Golan =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > On 08/12/2015 01:55 PM, Artyom Lukianov wrote: >> Can you please provide output of lscpu for your host please. >> Thanks > > >> ----- Original Message ----- >> From: "zhangjian2011" >> To: users(a)ovirt.org >> Sent: Wednesday, August 12, 2015 1:06:11 PM >> Subject: [ovirt-users] CPU Threads Help!!! >> >> >> >> Hi, Guys Recently I am investigating the Optimization Policy in >> Cluster and try to use =E2=80=9C CPU Threads =E2=80=9D. >> >> As the manual of description: >> >> =3D=3D=3D=3D=3D=3D=3D=3D >> >> For example, a 24-core >> >> system with 2 threads per core (48 >> >> threads total) can run virtual machines with >> >> up to 48 cores each >> >> =3D=3D=3D=3D=3D=3D=3D=3D >> >> >> >> My host CPU is >> >> i3-2120 CPU (2 cores 4 threads) >> >> >> >> So I think the expect result case is : >> >> 1. If the =E2=80=9C Count Threads As Cores =E2=80=9D disable , we can=E2= =80=99t run virtual >> vm with above 2 vCPU >> >> 2. If the =E2=80=9C Count Threads As Cores =E2=80=9D enable , we can=E2= =80=99t run virtual vm >> with above 4 vCPU >> >> >> >> Now the problem is about result case 1: >> >> 1. When I set =E2=80=9C Count Threads As Cores =E2=80=9D disable , I sti= ll can run >> virtual vm with 4 vCPU >> >> Can anyone help me to explain it ??? > > Like Artyom mentioned, it best to see your lscpu output but my guess > is that the 4 threads is actually 2 per core. > And there are 2 core and 2 sockets. this means 4 cpus without hyper > threading and 8 with. > > BTW the Host "General" subtab on the webadmin should output all this > info as well. Check it out. According to ARK Intel Core i3-2120 cannot be used in dual-socket configurations. --===============8407417381751816996==-- From zhangjian2011 at cn.fujitsu.com Sun Aug 16 20:47:17 2015 Content-Type: multipart/mixed; boundary="===============5464164587084552764==" MIME-Version: 1.0 From: zhangjian2011 To: users at ovirt.org Subject: Re: [ovirt-users] CPU Threads Help!!! Date: Mon, 17 Aug 2015 08:47:16 +0800 Message-ID: <55D12F14.4070002@cn.fujitsu.com> In-Reply-To: 320993691.11987871.1439376949049.JavaMail.zimbra@redhat.com --===============5464164587084552764== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Sorry for late reply. # lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Thread(s) per core: 2 Core(s) per socket: 2 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 42 Model name: Intel(R) Core(TM) i3-2120 CPU @ 3.30GHz Stepping: 7 CPU MHz: 2704.195 BogoMIPS: 6585.15 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 3072K NUMA node0 CPU(s): 0-3 Thanks. On 08/12/2015 06:55 PM, Artyom Lukianov wrote: > Can you please provide output of lscpu for your host please. > Thanks > > ----- Original Message ----- > From: "zhangjian2011" > To: users(a)ovirt.org > Sent: Wednesday, August 12, 2015 1:06:11 PM > Subject: [ovirt-users] CPU Threads Help!!! > > > > Hi, Guys Recently I am investigating the Optimization Policy in Cluster a= nd try to use =E2=80=9C CPU Threads =E2=80=9D. > > As the manual of description: > > =3D=3D=3D=3D=3D=3D=3D=3D > > For example, a 24-core > > system with 2 threads per core (48 > > threads total) can run virtual machines with > > up to 48 cores each > > =3D=3D=3D=3D=3D=3D=3D=3D > > > > My host CPU is > > i3-2120 CPU (2 cores 4 threads) > > > > So I think the expect result case is : > > 1. If the =E2=80=9C Count Threads As Cores =E2=80=9D disable , we can=E2= =80=99t run virtual vm with above 2 vCPU > > 2. If the =E2=80=9C Count Threads As Cores =E2=80=9D enable , we can=E2= =80=99t run virtual vm with above 4 vCPU > > > > Now the problem is about result case 1: > > 1. When I set =E2=80=9C Count Threads As Cores =E2=80=9D disable , I stil= l can run virtual vm with 4 vCPU > > Can anyone help me to explain it ??? > > Regards, > Jian > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > . > --===============5464164587084552764==--