From mboxrd@z Thu Jan 1 00:00:00 1970 From: "zyshao.maillist" Subject: Upgrage PV domU kernel? Date: Wed, 25 Mar 2009 08:58:44 +0800 Message-ID: <200903250858311253343@gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1605520025==" Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org This is a multi-part message in MIME format. --===============1605520025== Content-Type: multipart/alternative; boundary="=====003_Dragon653032357408_=====" This is a multi-part message in MIME format. --=====003_Dragon653032357408_===== Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 7bit hi pals, I need to run some HPC applications on the PV Guest (configured with multiple VCPUs and the application invokes also multiple processes to communicate with each other during the lifetime), and found that in some overcommitted cases, the application's performance degrades drastically. I got a Xen installation with both Dom0 and DomU running "vmlinuz-2.6.18.8-xen" kernel, i.e., the default configuration. I am wondering if I can Upgrade the kernel of the PV Guest, i.e., domU, to run other alternative kernel, such as latest stable linux kernel, 2.6.28.8? By this way, it may be possible to avoid the performance sacrifice resulted by spin-lock problem. Thanks in advance for any suggestions! Zhiyuan Shao 2009-03-25 --=====003_Dragon653032357408_===== Content-Type: text/html; charset="gb2312" Content-Transfer-Encoding: 7bit
hi pals,
 
I need to run some HPC applications on the PV Guest (configured with multiple VCPUs and the application invokes also multiple processes to communicate with each other during the lifetime), and found that in some overcommitted cases, the application's performance degrades drastically. I got a Xen installation with both Dom0 and DomU running "vmlinuz-2.6.18.8-xen" kernel, i.e., the default configuration.
 
I am wondering if I can Upgrade the kernel of the PV Guest, i.e., domU, to run other alternative kernel, such as latest stable linux kernel, 2.6.28.8? By this way, it may be possible to avoid the performance sacrifice resulted by spin-lock problem.
 
Thanks in advance for any suggestions!
 
Zhiyuan Shao
 
 
2009-03-25
 
 --=====003_Dragon653032357408_=====-- --===============1605520025== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel --===============1605520025==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thiago Camargo Martins Cordeiro Subject: Re: Upgrage PV domU kernel? Date: Wed, 25 Mar 2009 14:55:55 -0300 Message-ID: <6b7f6eb0903251055k13d5ca52i43861822a8683e03@mail.gmail.com> References: <200903250858311253343@gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1579034241==" Return-path: In-Reply-To: <200903250858311253343@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "zyshao.maillist" Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org --===============1579034241== Content-Type: multipart/alternative; boundary=0016363b9098182e210465f5366b --0016363b9098182e210465f5366b Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi Zyshao, You can download the latest kernel from http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.tar.bz2 within your domU, compile it as usual, copy vmlinuz (and initramdisk) to your dom0 (if you dont use PyGRUB) and start it! Good luck! Thiago 2009/3/24 zyshao.maillist > hi pals, > > I need to run some HPC applications on the PV Guest (configured with > multiple VCPUs and the application invokes also multiple processes to > communicate with each other during the lifetime), and found that in some > overcommitted cases, the application's performance degrades drastically. I > got a Xen installation with both Dom0 and DomU running > "vmlinuz-2.6.18.8-xen" kernel, i.e., the default configuration. > > I am wondering if I can Upgrade the kernel of the PV Guest, i.e., domU, to > run other alternative kernel, such as latest stable linux kernel, 2.6.28.8? > By this way, it may be possible to avoid the performance sacrifice resulted > by spin-lock problem. > > Thanks in advance for any suggestions! > > Zhiyuan Shao > > > 2009-03-25 > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel > > --0016363b9098182e210465f5366b Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Zyshao,

=A0You can download the latest kernel from http://kernel.or= g/pub/linux/kernel/v2.6/linux-2.6.29.tar.bz2 within your domU, compile = it as usual, copy vmlinuz (and initramdisk) to your dom0 (if you dont use P= yGRUB) and start it!

Good luck!
Thiago

2009/3/24 zyshao= .maillist <zyshao.maillist@gmail.com>
hi pals,
=A0
I need to run some HPC applications on the PV Guest (configured with= =20 multiple VCPUs and the application invokes also multiple processes to=20 communicate with each other during the lifetime), and found that in some=20 overcommitted cases, the application's performance degrades drastically= . I got a=20 Xen installation with both Dom0 and DomU running "vmlinuz-2.6.18.8-xen= " kernel,=20 i.e., the default configuration.
=A0
I am wondering if I can Upgrade the kernel of the PV Guest, i.e., domU= , to=20 run other alternative kernel, such as latest stable linux kernel, 2.6.28.8?= By=20 this way, it may be possible to avoid the performance sacrifice resulted by= =20 spin-lock problem.
=A0
Thanks in advance for any suggestions!
=A0
Zhiyuan Shao
=A0
=A0
200= 9-03-25=20
=A0

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.= com
http://l= ists.xensource.com/xen-devel


--0016363b9098182e210465f5366b-- --===============1579034241== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel --===============1579034241==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Zhiyuan Shao" Subject: Re: Re: Upgrage PV domU kernel? Date: Thu, 26 Mar 2009 08:55:54 +0800 Message-ID: <200903260855529256817@gmail.com> References: <200903250858311253343@gmail.com>, <6b7f6eb0903251055k13d5ca52i43861822a8683e03@mail.gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1532512443==" Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Thiago Camargo Martins Cordeiro Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org This is a multi-part message in MIME format. --===============1532512443== Content-Type: multipart/alternative; boundary="=====003_Dragon577670455771_=====" This is a multi-part message in MIME format. --=====003_Dragon577670455771_===== Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 T0ssIFRoYW5rcyBhIGxvdCwgSSB3aWxsIHRyeSB0aGF0IHdheS4NCg0KaG9waW5nIGdvb2QgbHVj 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charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel --===============1532512443==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Zhiyuan Shao" Subject: Re: Re: Re: Upgrage PV domU kernel? Date: Mon, 30 Mar 2009 20:01:42 +0800 Message-ID: <200903302001401718613@gmail.com> References: <200903250858311253343@gmail.com>, <6b7f6eb0903251055k13d5ca52i43861822a8683e03@mail.gmail.com>, <200903260855529256817@gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1070099886==" Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Zhiyuan Shao , Thiago Camargo Martins Cordeiro Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org This is a multi-part message in MIME format. --===============1070099886== Content-Type: multipart/alternative; boundary="=====003_Dragon613280036063_=====" This is a multi-part message in MIME format. --=====003_Dragon613280036063_===== Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 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aXN0cy54ZW5zb3VyY2UuY29tL3hlbi1kZXZlbCIgDQogIHRhcmdldD1fYmxhbms+aHR0cDovL2xp c3RzLnhlbnNvdXJjZS5jb20veGVuLWRldmVsPC9BPjxCUj48QlI+PC9CTE9DS1FVT1RFPjwvRElW PjxCUj48L0ZPTlQ+PC9ESVY+PC9GT05UPjwvRElWPjwvQk9EWT48L0hUTUw+DQo= --=====003_Dragon613280036063_=====-- --===============1070099886== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel --===============1070099886==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thiago Camargo Martins Cordeiro Subject: Re: Re: Re: Upgrage PV domU kernel? Date: Mon, 30 Mar 2009 10:22:04 -0300 Message-ID: <6b7f6eb0903300622s759fb083sc77ca925271dcf@mail.gmail.com> References: <200903250858311253343@gmail.com> <6b7f6eb0903251055k13d5ca52i43861822a8683e03@mail.gmail.com> <200903260855529256817@gmail.com> <200903302001401718613@gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1756057753==" Return-path: In-Reply-To: <200903302001401718613@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Zhiyuan Shao Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org --===============1756057753== Content-Type: multipart/alternative; boundary=0016e6470e0ce8410a046655f7f4 --0016e6470e0ce8410a046655f7f4 Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: quoted-printable Have you enabled this options: CONFIG_PARAVIRT_GUEST=3Dy CONFIG_XEN=3Dy CONFIG_HIGHMEM64G=3Dy ...in your domU's config kernel? Good luck! Thiago 2009/3/30 Zhiyuan Shao > I tried this way, but seems it doesnot work. > > [root@Dell1 test-pv]# xm cr -c 1-pv.cfg > Using config file "./1-pv.cfg". > Error: (2, 'Invalid kernel', "elf_xen_note_check: ERROR: Not a Xen-ELF > image: No ELF notes or '__xen_guest' section found.\n") > The configure file of 1-pv.cfg: > > [root@Dell1 test-pv]# cat 1-pv.cfg > > #------------------------------------------------------------------------= ---- > # Kernel image file. > kernel =3D "/boot/vmlinuz-2.6.29" > > # Optional ramdisk. > ramdisk =3D "/boot/initrd-2.6.29.img" > > memory =3D 512 > > # A name for your domain. All domains must have different names. > name =3D "test-pv" > > vcpus =3D 2 > > vif =3D [ 'ip=3D192.168.2.101, mac=3D00:16:3e:00:10:11, bridge=3Dxenbr0' = ] > > disk =3D [ 'file:/root/test-pv/vm1disk,sda1,w' ] > > # Set root device. > root =3D "/dev/sda1 ro" > > extra =3D "4" > > > 2009-03-30 > ------------------------------ > Zhiyuan Shao > ------------------------------ > *=B7=A2=BC=FE=C8=CB=A3=BA* Thiago Camargo Martins Cordeiro > *=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA* 2009-03-26 01:55:58 > *=CA=D5=BC=FE=C8=CB=A3=BA* zyshao.maillist > *=B3=AD=CB=CD=A3=BA* xen-devel@lists.xensource.com > *=D6=F7=CC=E2=A3=BA* Re: [Xen-devel] Upgrage PV domU kernel? > Hi Zyshao, > > You can download the latest kernel from > http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.tar.bz2 within your > domU, compile it as usual, copy vmlinuz (and initramdisk) to your dom0 (i= f > you dont use PyGRUB) and start it! > > Good luck! > Thiago > > 2009/3/24 zyshao.maillist > >> hi pals, >> >> I need to run some HPC applications on the PV Guest (configured with >> multiple VCPUs and the application invokes also multiple processes to >> communicate with each other during the lifetime), and found that in some >> overcommitted cases, the application's performance degrades drastically.= I >> got a Xen installation with both Dom0 and DomU running >> "vmlinuz-2.6.18.8-xen" kernel, i.e., the default configuration. >> >> I am wondering if I can Upgrade the kernel of the PV Guest, i.e., domU, = to >> run other alternative kernel, such as latest stable linux kernel, 2.6.28= .8? >> By this way, it may be possible to avoid the performance sacrifice resul= ted >> by spin-lock problem. >> >> Thanks in advance for any suggestions! >> >> Zhiyuan Shao >> >> >> 2009-03-25 >> >> >> _______________________________________________ >> Xen-devel mailing list >> Xen-devel@lists.xensource.com >> http://lists.xensource.com/xen-devel >> >> > --0016e6470e0ce8410a046655f7f4 Content-Type: text/html; charset=GB2312 Content-Transfer-Encoding: quoted-printable Have you enabled this options:

CONFIG_PARAVIRT_GUEST=3Dy
CONFIG_X= EN=3Dy
CONFIG_HIGHMEM64G=3Dy

...in your domU's config kernel?=

Good luck!
Thiago

2009/3/30 Zh= iyuan Shao <zyshao.maillist@gmail.com>
I tried this way, = but seems it=20 doesnot work.
 
[root@Dell1 test-pv]# xm cr -c 1-pv.cfg
Using config file=20 "./1-pv.cfg".
Error: (2, 'Invalid kernel', "elf_x= en_note_check: ERROR: Not a=20 Xen-ELF image: No ELF notes or '__xen_guest' section found.\n"= )
The configure file of 1-pv.cfg:
 
[root@Dell1 test-pv]# cat=20 1-pv.cfg
#--------------------------------------------------------------= --------------
#=20 Kernel image file.
kernel =3D "/boot/vmlinuz-2.6.29"
 =
# Optional=20 ramdisk.
ramdisk =3D "/boot/initrd-2.6.29.img"
 
me= mory =3D=20 512
 
# A name for your domain. All domains must have different= =20 names.
name =3D "test-pv"
 
vcpus =3D 2
 vif =3D [=20 'ip=3D192.168.2.101, mac=3D00:16:3e:00:10:11, bridge=3Dxenbr0' ] 
disk =3D [=20 'file:/root/test-pv/vm1disk,sda1,w' ]
 
# Set root devic= e.
root =3D=20 "/dev/sda1 ro"
 
extra =3D "4"
 
=
 
2009-03-30 =
Zhiyuan Shao= =20
=B7=A2=BC=FE=C8=CB=A3=BA Thia= go Camargo Martins=20 Cordeiro
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA 2009-03-26  01:55:58=20
=CA=D5=BC=FE=C8=CB=A3=BA zysh= ao.maillist=20
=B3=AD=CB=CD=A3=BA=20 xen-deve= l@lists.xensource.com
=D6=F7=CC=E2=A3=BA Re: [Xen-d= evel] Upgrage PV=20 domU kernel?
Hi Zyshao,

 You can down= load the=20 latest kernel from http://kernel.org/pub/linux/kernel/v2.6/= linux-2.6.29.tar.bz2=20 within your domU, compile it as usual, copy vmlinuz (and initramdisk) to yo= ur=20 dom0 (if you dont use PyGRUB) and start it!

Good luck!
Thiago
=
2009/3/24 zyshao.maillist <= zyshao.maill= ist@gmail.com>
hi pals,
 
I need to run some HPC applications on the PV Guest (configured with= =20 multiple VCPUs and the application invokes also multiple processes to=20 communicate with each other during the lifetime), and found that in some= =20 overcommitted cases, the application's performance degrades drastical= ly. I got=20 a Xen installation with both Dom0 and DomU running "vmlinuz-2.6.18.8= -xen"=20 kernel, i.e., the default configuration.
 
I am wondering if I can Upgrade the kernel of the PV Guest, i.e., do= mU,=20 to run other alternative kernel, such as latest stable linux kernel, 2.6.= 28.8?=20 By this way, it may be possible to avoid the performance sacrifice result= ed by=20 spin-lock problem.
 
Thanks in advance for any suggestions!
 
Zhiyuan Shao
 
 
2= 009-03-25=20
 

_______________________________________= ________
Xen-devel=20 mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-dev= el



--0016e6470e0ce8410a046655f7f4-- --===============1756057753== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel --===============1756057753==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Zhiyuan Shao" Subject: Re: Re: Re: Upgrage PV domU kernel? Date: Mon, 30 Mar 2009 21:38:06 +0800 Message-ID: <200903302137152340156@gmail.com> References: <200903250858311253343@gmail.com>, <6b7f6eb0903251055k13d5ca52i43861822a8683e03@mail.gmail.com>, <200903260855529256817@gmail.com>, <200903302001401718613@gmail.com>, <6b7f6eb0903300622s759fb083sc77ca925271dcf@mail.gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0934657069==" Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Thiago Camargo Martins Cordeiro Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org This is a multi-part message in MIME format. --===============0934657069== Content-Type: multipart/alternative; boundary="=====003_Dragon113227222534_=====" This is a multi-part message in MIME format. --=====003_Dragon113227222534_===== Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 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Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel --===============0934657069==-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thiago Camargo Martins Cordeiro Subject: Re: Re: Re: Upgrage PV domU kernel? Date: Mon, 30 Mar 2009 11:01:39 -0300 Message-ID: <6b7f6eb0903300701iecd8035y9601eb3a9e6d0566@mail.gmail.com> References: <200903250858311253343@gmail.com> <6b7f6eb0903251055k13d5ca52i43861822a8683e03@mail.gmail.com> <200903260855529256817@gmail.com> <200903302001401718613@gmail.com> <6b7f6eb0903300622s759fb083sc77ca925271dcf@mail.gmail.com> <200903302137152340156@gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1171082224==" Return-path: In-Reply-To: <200903302137152340156@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Zhiyuan Shao Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org --===============1171082224== Content-Type: multipart/alternative; boundary=0016e647eb6e7cb11804665685fa --0016e647eb6e7cb11804665685fa Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: quoted-printable No, when you download your kernel source within your domU, you must: tar xjf linux-2.6.29.tar.bz2 cd linux-2.6.29 make defconfig make menuconfig --- Enable HIGHMEM64G, PARAVIRT_GUEST and XEN (only domU are available for 2.6.29) options and save it --- make targz-pkg # So you can copy the generated kernel package to other domUs and/or to dom0... You can make a initramdisk, if you wish (If on Debian) depmod 2.6.29 update-initramfs -k 2.6.29 -c And copy your domU /boot/initrd.img-2.6.29 to your dom0 together your new compiled kernel. Good luck! Thiago 2009/3/30 Zhiyuan Shao > Using the default settings always when make (kernel) asks? > > Thanks, > > 2009-03-30 > ------------------------------ > Zhiyuan Shao > ------------------------------ > *=B7=A2=BC=FE=C8=CB=A3=BA* Thiago Camargo Martins Cordeiro > *=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA* 2009-03-30 21:22:05 > *=CA=D5=BC=FE=C8=CB=A3=BA* Zhiyuan Shao > *=B3=AD=CB=CD=A3=BA* xen-devel@lists.xensource.com > *=D6=F7=CC=E2=A3=BA* Re: Re: Re: [Xen-devel] Upgrage PV domU kernel? > Have you enabled this options: > > CONFIG_PARAVIRT_GUEST=3Dy > CONFIG_XEN=3Dy > CONFIG_HIGHMEM64G=3Dy > > ...in your domU's config kernel? > > Good luck! > Thiago > > 2009/3/30 Zhiyuan Shao > >> I tried this way, but seems it doesnot work. >> >> [root@Dell1 test-pv]# xm cr -c 1-pv.cfg >> Using config file "./1-pv.cfg". >> Error: (2, 'Invalid kernel', "elf_xen_note_check: ERROR: Not a Xen-ELF >> image: No ELF notes or '__xen_guest' section found.\n") >> The configure file of 1-pv.cfg: >> >> [root@Dell1 test-pv]# cat 1-pv.cfg >> >> #-----------------------------------------------------------------------= ----- >> # Kernel image file. >> kernel =3D "/boot/vmlinuz-2.6.29" >> >> # Optional ramdisk. >> ramdisk =3D "/boot/initrd-2.6.29.img" >> >> memory =3D 512 >> >> # A name for your domain. All domains must have different names. >> name =3D "test-pv" >> >> vcpus =3D 2 >> >> vif =3D [ 'ip=3D192.168.2.101, mac=3D00:16:3e:00:10:11, bridge=3Dxenbr0'= ] >> >> disk =3D [ 'file:/root/test-pv/vm1disk,sda1,w' ] >> >> # Set root device. >> root =3D "/dev/sda1 ro" >> >> extra =3D "4" >> >> >> 2009-03-30 >> ------------------------------ >> Zhiyuan Shao >> ------------------------------ >> *=B7=A2=BC=FE=C8=CB=A3=BA* Thiago Camargo Martins Cordeiro >> *=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA* 2009-03-26 01:55:58 >> *=CA=D5=BC=FE=C8=CB=A3=BA* zyshao.maillist >> *=B3=AD=CB=CD=A3=BA* xen-devel@lists.xensource.com >> *=D6=F7=CC=E2=A3=BA* Re: [Xen-devel] Upgrage PV domU kernel? >> Hi Zyshao, >> >> You can download the latest kernel from >> http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.tar.bz2 within your >> domU, compile it as usual, copy vmlinuz (and initramdisk) to your dom0 (= if >> you dont use PyGRUB) and start it! >> >> Good luck! >> Thiago >> >> 2009/3/24 zyshao.maillist >> >>> hi pals, >>> >>> I need to run some HPC applications on the PV Guest (configured with >>> multiple VCPUs and the application invokes also multiple processes to >>> communicate with each other during the lifetime), and found that in som= e >>> overcommitted cases, the application's performance degrades drastically= . I >>> got a Xen installation with both Dom0 and DomU running >>> "vmlinuz-2.6.18.8-xen" kernel, i.e., the default configuration. >>> >>> I am wondering if I can Upgrade the kernel of the PV Guest, i.e., domU, >>> to run other alternative kernel, such as latest stable linux kernel, >>> 2.6.28.8? By this way, it may be possible to avoid the performance sacr= ifice >>> resulted by spin-lock problem. >>> >>> Thanks in advance for any suggestions! >>> >>> Zhiyuan Shao >>> >>> >>> 2009-03-25 >>> >>> >>> _______________________________________________ >>> Xen-devel mailing list >>> Xen-devel@lists.xensource.com >>> http://lists.xensource.com/xen-devel >>> >>> >> > --0016e647eb6e7cb11804665685fa Content-Type: text/html; charset=GB2312 Content-Transfer-Encoding: quoted-printable No, when you download your kernel source within your domU, you must:
tar xjf linux-2.6.29.tar.bz2
cd linux-2.6.29
make defconfig
make menuconfig

 --- Enabl= e HIGHMEM64G, PARAVIRT_GUEST and XEN (only domU are available for 2.6.29) o= ptions and save it ---

make targz-pkg  # So you can copy the ge= nerated kernel package to other domUs and/or to dom0...

You can make a initramdisk, if you wish (If on Debian)

depmod 2.= 6.29
update-initramfs -k 2.6.29 -c

And copy your domU /boot/initr= d.img-2.6.29 to your dom0 together your new compiled kernel.

Good lu= ck!
Thiago


2009/3/30 Zhiyuan Shao <zyshao.maillist= @gmail.com>
Using the default = settings always=20 when make (kernel) asks?
 
Thanks,
 
2009-03-30 =
Zhiyuan Shao= =20
=B7=A2=BC=FE=C8=CB=A3=BA Thia= go Camargo Martins=20 Cordeiro
=B7=A2=CB=CD=CA=B1=BC=E4=A3= =BA 2009-03-30  21:22:05=20
=CA=D5=BC=FE=C8=CB=A3=BA Zhiy= uan Shao
=B3=AD=CB=CD=A3=BA=20 xen-deve= l@lists.xensource.com
=D6=F7=CC=E2=A3=BA Re: = Re: Re: [Xen-devel]=20 Upgrage PV domU kernel?
Have you enabled this=20 options:

CONFIG_PARAVIRT_GUEST=3Dy
CONFIG_XEN=3Dy
CONFIG_HIGHM= EM64G=3Dy

...in=20 your domU's config kernel?

Good luck!
Thiago

2009/3/30 Zhiyuan Shao <zyshao.maillist= @gmail.com>
I tried this way= , but seems it=20 doesnot work.
 
[root@Dell1 test-pv]# xm cr -c 1-pv.cfg
Using config file=20 "./1-pv.cfg".
Error: (2, 'Invalid kernel', "elf= _xen_note_check: ERROR: Not=20 a Xen-ELF image: No ELF notes or '__xen_guest' section found.\n&q= uot;)
The configure file of 1-pv.cfg:
 
[root@Dell1 test-pv]# cat=20 1-pv.cfg
#------------------------------------------------------------= ----------------
#=20 Kernel image file.
kernel =3D "/boot/vmlinuz-2.6.29"
&nbs= p;
# Optional=20 ramdisk.
ramdisk =3D "/boot/initrd-2.6.29.img"
 
= memory =3D=20 512
 
# A name for your domain. All domains must have differen= t=20 names.
name =3D "test-pv"
 
vcpus =3D 2
 =
vif =3D [=20 'ip=3D192.168.2.101, mac=3D00:16:3e:00:10:11, bridge=3Dxenbr0' ]<= br> 
disk =3D=20 [ 'file:/root/test-pv/vm1disk,sda1,w' ]
 
# Set root= =20 device.
root =3D "/dev/sda1 ro"
 
extra =3D "= ;4"
 
 
2009-03-30
Zhiyuan Sh= ao=20
=B7=A2=BC=FE=C8=CB=A3=BA Th= iago Camargo Martins Cordeiro=20
=B7=A2=CB=CD=CA=B1=BC=E4=A3=BA<= /b> 2009-03-26  01:55:58=20
=CA=D5=BC=FE=C8=CB=A3=BA zy= shao.maillist
=D6=F7=CC=E2=A3=BA Re: [Xen= -devel] Upgrage PV domU=20 kernel?
Hi Zyshao,

 You can do= wnload the=20 latest kernel from http://kernel.org/pub/linux/kernel/v2.= 6/linux-2.6.29.tar.bz2=20 within your domU, compile it as usual, copy vmlinuz (and initramdisk) to = your=20 dom0 (if you dont use PyGRUB) and start it!

Good=20 luck!
Thiago

2009/3/24 zyshao.maillist &l= t;zyshao.mai= llist@gmail.com>
hi pals,
 
I need to run some HPC applications on the PV Guest (configured wi= th=20 multiple VCPUs and the application invokes also multiple processes to= =20 communicate with each other during the lifetime), and found that in som= e=20 overcommitted cases, the application's performance degrades drastic= ally. I=20 got a Xen installation with both Dom0 and DomU running=20 "vmlinuz-2.6.18.8-xen" kernel, i.e., the default configuratio= n.
 
I am wondering if I can Upgrade the kernel of the PV Guest, i.e., = domU,=20 to run other alternative kernel, such as latest stable linux kernel,=20 2.6.28.8? By this way, it may be possible to avoid the performance sacr= ifice=20 resulted by spin-lock problem.
 
Thanks in advance for any suggestions!
 
Zhiyuan Shao
 
 
2009-03-25=20
 

_____________________________________= __________
Xen-devel=20 mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-dev= el




--0016e647eb6e7cb11804665685fa-- --===============1171082224== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel --===============1171082224==--