Is there anyway to install 64Bit Linux DomU on 32Bit Linux Dom0? Regards, Tanuj _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Sun, Jun 14, 2009 at 5:43 PM, Tanuj Bansal<bansal.tanuj83@gmail.com> wrote:> Is there anyway to install 64Bit Linux DomU on 32Bit Linux Dom0?Types of domU that can be run depends mostly on hypervisor, and not dom0. So if you have 64bit hypervisor, you should be able to run 32 and 64bit PV and HVM domUs, regardless whether dom0 is 32 or 64bit. If you have 32bit dom0 and 32bit hypervisor, you should be able to run 64bit HVM domU, but not 64bit PV domU. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
I have the following # rpm -qa | grep xen kernel-xen-2.6.18-53.el5 xen-3.0.3-41.el5 xen-libs-3.0.3-41.el5 xen-devel-3.0.3-41.el5 # cat /proc/cpuinfo flags : fpu tsc msr pae mce cx8 apic mtrr mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm 3dnowext 3dnow up pni lahf_lm ts ttp tm stc # getconf LONG_BIT 32 I don''t have hvm right now. So can I upgrade my xen for 64bit to install 64Bit PV without issue and where I can get the xen of 64Bit? Regards, Tanuj -----Original Message----- From: Fajar A. Nugraha [mailto:fajar@fajar.net] Sent: Sunday, June 14, 2009 5:53 PM To: bansal.tanuj83@gmail.com Cc: Xen User-List Subject: Re: [Xen-users] 64bit linux DomU on 32bit Dom0 On Sun, Jun 14, 2009 at 5:43 PM, Tanuj Bansal<bansal.tanuj83@gmail.com> wrote:> Is there anyway to install 64Bit Linux DomU on 32Bit Linux Dom0?Types of domU that can be run depends mostly on hypervisor, and not dom0. So if you have 64bit hypervisor, you should be able to run 32 and 64bit PV and HVM domUs, regardless whether dom0 is 32 or 64bit. If you have 32bit dom0 and 32bit hypervisor, you should be able to run 64bit HVM domU, but not 64bit PV domU. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Sun, Jun 14, 2009 at 9:24 PM, Tanuj Bansal<bansal.tanuj83@gmail.com> wrote:> So can I upgrade my xen for 64bit to install 64Bit PV without issue and > where I can get the xen of 64Bit?Considering your existing system, the easiest way is to do a fresh install using RHEL/Centos 5.3, x86_64. Clean install is necessary because "upgrading" i386 -> x86_64 is not officially supported. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Thiago Camargo Martins Cordeiro
2009-Jun-15 16:46 UTC
Re: [Xen-users] 64bit linux DomU on 32bit Dom0
Hi! The new Xen Live CD v2.0 can answer your question... ;-) ... The version i386 of the Xen Live CD has a Xen Hypervisor for 64-bits CPUs as an option in GRUB''s menu. You can use without any problem, a 32-bits dom0/domU on top of a 64-bits hypervisor.... http://wiki.xensource.com/xenwiki/LiveCD Regards, Thiago 2009/6/14 Tanuj Bansal <bansal.tanuj83@gmail.com>> Is there anyway to install 64Bit Linux DomU on 32Bit Linux Dom0? > > > > Regards, > > > > Tanuj > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
His question was the other way around - whether he can have a 64bit domU on a 32bit dom0. And the answer is no, no you cannot. Best Regards Nathan Eisenberg Sr. Systems Administrator Atlas Networks, LLC support@atlasnetworks.us<mailto:support@atlasnetworks.us> http://support.atlasnetworks.us/portal From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Thiago Camargo Martins Cordeiro Sent: Monday, June 15, 2009 9:47 AM To: bansal.tanuj83@gmail.com Cc: Xen User-List Subject: Re: [Xen-users] 64bit linux DomU on 32bit Dom0 Hi! The new Xen Live CD v2.0 can answer your question... ;-) ... The version i386 of the Xen Live CD has a Xen Hypervisor for 64-bits CPUs as an option in GRUB''s menu. You can use without any problem, a 32-bits dom0/domU on top of a 64-bits hypervisor.... http://wiki.xensource.com/xenwiki/LiveCD Regards, Thiago 2009/6/14 Tanuj Bansal <bansal.tanuj83@gmail.com<mailto:bansal.tanuj83@gmail.com>> Is there anyway to install 64Bit Linux DomU on 32Bit Linux Dom0? Regards, Tanuj _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com<mailto:Xen-users@lists.xensource.com> http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 15/06/09 23:33, Nathan Eisenberg wrote:> > His question was the other way around -- whether he can have a 64bit > domU on a 32bit dom0. > > And the answer is no, no you cannot. > >That''s not true. I''ve got 32-bit and 64-bit domU''s running on OracleVM which has a 32-bit dom0. Unfortunately I don''t have a spare machine to put Xen 3.3 but I believe that it''s there as well, and if not there, in 3.4. Or something :-) jch _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Thiago Camargo Martins Cordeiro
2009-Jun-16 18:33 UTC
Re: [Xen-users] 64bit linux DomU on 32bit Dom0
Wrong! You can have a 64 bits domU with a 32 bits dom0. Just look at the new Xen LiveCD! ;-) What you can not have is a 64 bits domU on top of a 32bits Xen Hypervisor. Regards, thiago 2009/6/15 Nathan Eisenberg <nathan@atlasnetworks.us>> His question was the other way around – whether he can have a 64bit domU > on a 32bit dom0. > > > > And the answer is no, no you cannot. > > > > Best Regards > > Nathan Eisenberg > > Sr. Systems Administrator > > Atlas Networks, LLC > > support@atlasnetworks.us > > http://support.atlasnetworks.us/portal > > > > *From:* xen-users-bounces@lists.xensource.com [mailto: > xen-users-bounces@lists.xensource.com] *On Behalf Of *Thiago Camargo > Martins Cordeiro > *Sent:* Monday, June 15, 2009 9:47 AM > > *To:* bansal.tanuj83@gmail.com > *Cc:* Xen User-List > *Subject:* Re: [Xen-users] 64bit linux DomU on 32bit Dom0 > > > > Hi! > > > > The new Xen Live CD v2.0 can answer your question... ;-) > > > > ... > The version i386 of the Xen Live CD has a Xen Hypervisor for 64-bits CPUs as an option in GRUB''s menu. You can use without any problem, a 32-bits dom0/domU on top of a 64-bits hypervisor.... > > > > http://wiki.xensource.com/xenwiki/LiveCD > > Regards, > > Thiago > > > > 2009/6/14 Tanuj Bansal <bansal.tanuj83@gmail.com> > > Is there anyway to install 64Bit Linux DomU on 32Bit Linux Dom0? > > > > Regards, > > > > Tanuj > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users > > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hello,
i have a a big io issue with my PV-Guest (Ubuntu 9.04). When i write or
copy large files, the hdd performance is very slow.
This is my iostat output. It looks like that the datat is not reading
and written the same time.
File copy in DomU (PV Guest, LVM)
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 1718,00 2816,00 6,71 11,00
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 1,00 0,00 0,00 99,00
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 2232,67 0,00 8,72 0,00
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 1,98 0,00 0,99 97,03
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 1079,00 4959,00 4,21 19,37
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 1,00 0,00 0,00 99,00
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 2866,00 0,00 11,20 0,00
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,99 0,00 0,99 1,98 0,00 96,04
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 2719,00 0,00 10,62 0,00
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 0,00 0,00 0,00 100,00
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 1264,00 0,00 4,94 0,00
8,00 0,00 0,00 0,00 0,00
File copy from Dom0 shows up a normal behavior:
avg-cpu: %user %nice %system %iowait %steal %idle
0,99 0,00 13,86 78,22 0,00 6,93
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 13504,00 13325,00 52,75 52,05
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 10,00 81,00 0,00 9,00
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 11155,45 11163,37 43,58 43,61
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 15,84 76,24 0,99 6,93
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 12226,00 12302,00 47,76 48,05
8,00 0,00 0,00 0,00 0,00
I am running xen 3.3.1 on Debian Lenny Dom0, Kernel 2.6.26-1-xen-amd64.
Thanks a lot
Stefan
_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users
Could use some more detail - DomU config and a description of the storage and
hardware would be good.
Best Regards
Nathan Eisenberg
Sr. Systems Administrator
Atlas Networks, LLC
support@atlasnetworks.us
http://support.atlasnetworks.us/portal
-----Original Message-----
From: xen-users-bounces@lists.xensource.com
[mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Stefan Below
Sent: Tuesday, June 16, 2009 12:50 PM
To: xen-users@lists.xensource.com
Subject: [Xen-users] DomU IO issue
Hello,
i have a a big io issue with my PV-Guest (Ubuntu 9.04). When i write or
copy large files, the hdd performance is very slow.
This is my iostat output. It looks like that the datat is not reading
and written the same time.
File copy in DomU (PV Guest, LVM)
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 1718,00 2816,00 6,71 11,00
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 1,00 0,00 0,00 99,00
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 2232,67 0,00 8,72 0,00
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 1,98 0,00 0,99 97,03
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 1079,00 4959,00 4,21 19,37
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 1,00 0,00 0,00 99,00
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 2866,00 0,00 11,20 0,00
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,99 0,00 0,99 1,98 0,00 96,04
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 2719,00 0,00 10,62 0,00
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 0,00 0,00 0,00 100,00
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 1264,00 0,00 4,94 0,00
8,00 0,00 0,00 0,00 0,00
File copy from Dom0 shows up a normal behavior:
avg-cpu: %user %nice %system %iowait %steal %idle
0,99 0,00 13,86 78,22 0,00 6,93
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 13504,00 13325,00 52,75 52,05
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 10,00 81,00 0,00 9,00
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 11155,45 11163,37 43,58 43,61
8,00 0,00 0,00 0,00 0,00
avg-cpu: %user %nice %system %iowait %steal %idle
0,00 0,00 15,84 76,24 0,99 6,93
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
md0 0,00 0,00 12226,00 12302,00 47,76 48,05
8,00 0,00 0,00 0,00 0,00
I am running xen 3.3.1 on Debian Lenny Dom0, Kernel 2.6.26-1-xen-amd64.
Thanks a lot
Stefan
_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users
_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users
This is the domU config file:
kernel = "/usr/lib/xen/boot/pv-grub-x86_64.gz"
memory = ''2048''
vcpus=2
disk = [
''phy:/dev/vg0/tsIbex-disk,xvda,w'',
''phy:/dev/vg0/tsIbex-swap,xvdb,w'',
]
extra = "(hd0)/boot/grub/menu.lst"
name = ''tsIbex''
vif = [ ''ip=192.xxx.xxx.xxx,mac=xx:xx:xx:xx:xx'' ]
on_poweroff = ''destroy''
on_reboot = ''restart''
on_crash = ''restart''
Dom0 Hardware and configuration:
Q6600 with 8GB RAM
sw Raid10,f2 Layout with 4 disks (i know, hardware raid is
better.....) (storage for DomU via LVM)
sw Raid1 with 4 disks for Dom0 root partition
Debian Lenny, xen 3.3.1, with Kernel 2.6.26-1-xen-amd64.
Anything else i should provide?
Thanks,
Stefan
> Could use some more detail - DomU config and a description of the storage
and hardware would be good.
>
> Best Regards
> Nathan Eisenberg
> Sr. Systems Administrator
> Atlas Networks, LLC
> support@atlasnetworks.us
> http://support.atlasnetworks.us/portal
>
>
> -----Original Message-----
> From: xen-users-bounces@lists.xensource.com
[mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Stefan Below
> Sent: Tuesday, June 16, 2009 12:50 PM
> To: xen-users@lists.xensource.com
> Subject: [Xen-users] DomU IO issue
>
> Hello,
>
> i have a a big io issue with my PV-Guest (Ubuntu 9.04). When i write or
> copy large files, the hdd performance is very slow.
>
> This is my iostat output. It looks like that the datat is not reading
> and written the same time.
>
> File copy in DomU (PV Guest, LVM)
>
> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
> avgrq-sz avgqu-sz await svctm %util
> md0 0,00 0,00 1718,00 2816,00 6,71 11,00
> 8,00 0,00 0,00 0,00 0,00
>
> avg-cpu: %user %nice %system %iowait %steal %idle
> 0,00 0,00 1,00 0,00 0,00 99,00
>
> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
> avgrq-sz avgqu-sz await svctm %util
> md0 0,00 0,00 2232,67 0,00 8,72 0,00
> 8,00 0,00 0,00 0,00 0,00
>
> avg-cpu: %user %nice %system %iowait %steal %idle
> 0,00 0,00 1,98 0,00 0,99 97,03
>
> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
> avgrq-sz avgqu-sz await svctm %util
> md0 0,00 0,00 1079,00 4959,00 4,21 19,37
> 8,00 0,00 0,00 0,00 0,00
>
> avg-cpu: %user %nice %system %iowait %steal %idle
> 0,00 0,00 1,00 0,00 0,00 99,00
>
> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
> avgrq-sz avgqu-sz await svctm %util
> md0 0,00 0,00 2866,00 0,00 11,20 0,00
> 8,00 0,00 0,00 0,00 0,00
>
> avg-cpu: %user %nice %system %iowait %steal %idle
> 0,99 0,00 0,99 1,98 0,00 96,04
>
> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
> avgrq-sz avgqu-sz await svctm %util
> md0 0,00 0,00 2719,00 0,00 10,62 0,00
> 8,00 0,00 0,00 0,00 0,00
>
> avg-cpu: %user %nice %system %iowait %steal %idle
> 0,00 0,00 0,00 0,00 0,00 100,00
>
> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
> avgrq-sz avgqu-sz await svctm %util
> md0 0,00 0,00 1264,00 0,00 4,94 0,00
> 8,00 0,00 0,00 0,00 0,00
>
>
> File copy from Dom0 shows up a normal behavior:
>
>
> avg-cpu: %user %nice %system %iowait %steal %idle
> 0,99 0,00 13,86 78,22 0,00 6,93
>
> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
> avgrq-sz avgqu-sz await svctm %util
> md0 0,00 0,00 13504,00 13325,00 52,75 52,05
> 8,00 0,00 0,00 0,00 0,00
>
> avg-cpu: %user %nice %system %iowait %steal %idle
> 0,00 0,00 10,00 81,00 0,00 9,00
>
> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
> avgrq-sz avgqu-sz await svctm %util
> md0 0,00 0,00 11155,45 11163,37 43,58 43,61
> 8,00 0,00 0,00 0,00 0,00
>
> avg-cpu: %user %nice %system %iowait %steal %idle
> 0,00 0,00 15,84 76,24 0,99 6,93
>
> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
> avgrq-sz avgqu-sz await svctm %util
> md0 0,00 0,00 12226,00 12302,00 47,76 48,05
> 8,00 0,00 0,00 0,00 0,00
>
> I am running xen 3.3.1 on Debian Lenny Dom0, Kernel 2.6.26-1-xen-amd64.
>
> Thanks a lot
>
> Stefan
>
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
>
>
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
>
_______________________________________________
Xen-users mailing list
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Hi, what are the mount options (/etc/fstab) on the DomU ? In the xen-tools "partitions.d" example, "sync" is used, which give poor performance. Olivier Stefan Below a écrit :> This is the domU config file: > > kernel = "/usr/lib/xen/boot/pv-grub-x86_64.gz" > > > memory = ''2048'' > vcpus=2 > > disk = [ > ''phy:/dev/vg0/tsIbex-disk,xvda,w'', > ''phy:/dev/vg0/tsIbex-swap,xvdb,w'', > ] > > extra = "(hd0)/boot/grub/menu.lst" > name = ''tsIbex'' > > vif = [ ''ip=192.xxx.xxx.xxx,mac=xx:xx:xx:xx:xx'' ] > > on_poweroff = ''destroy'' > on_reboot = ''restart'' > on_crash = ''restart'' > > > Dom0 Hardware and configuration: > Q6600 with 8GB RAM > sw Raid10,f2 Layout with 4 disks (i know, hardware raid is > better.....) (storage for DomU via LVM) > sw Raid1 with 4 disks for Dom0 root partition > > Debian Lenny, xen 3.3.1, with Kernel 2.6.26-1-xen-amd64. > > Anything else i should provide? > > Thanks, > Stefan > > > >> Could use some more detail - DomU config and a description of the >> storage and hardware would be good. >> >> Best Regards >> Nathan Eisenberg >> Sr. Systems Administrator >> Atlas Networks, LLC >> support@atlasnetworks.us >> http://support.atlasnetworks.us/portal >> >> >> -----Original Message----- >> From: xen-users-bounces@lists.xensource.com >> [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Stefan Below >> Sent: Tuesday, June 16, 2009 12:50 PM >> To: xen-users@lists.xensource.com >> Subject: [Xen-users] DomU IO issue >> >> Hello, >> >> i have a a big io issue with my PV-Guest (Ubuntu 9.04). When i write >> or copy large files, the hdd performance is very slow. >> >> This is my iostat output. It looks like that the datat is not >> reading and written the same time. >> >> File copy in DomU (PV Guest, LVM) >> >> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >> avgrq-sz avgqu-sz await svctm %util >> md0 0,00 0,00 1718,00 2816,00 6,71 11,00 >> 8,00 0,00 0,00 0,00 0,00 >> >> avg-cpu: %user %nice %system %iowait %steal %idle >> 0,00 0,00 1,00 0,00 0,00 99,00 >> >> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >> avgrq-sz avgqu-sz await svctm %util >> md0 0,00 0,00 2232,67 0,00 8,72 0,00 >> 8,00 0,00 0,00 0,00 0,00 >> >> avg-cpu: %user %nice %system %iowait %steal %idle >> 0,00 0,00 1,98 0,00 0,99 97,03 >> >> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >> avgrq-sz avgqu-sz await svctm %util >> md0 0,00 0,00 1079,00 4959,00 4,21 19,37 >> 8,00 0,00 0,00 0,00 0,00 >> >> avg-cpu: %user %nice %system %iowait %steal %idle >> 0,00 0,00 1,00 0,00 0,00 99,00 >> >> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >> avgrq-sz avgqu-sz await svctm %util >> md0 0,00 0,00 2866,00 0,00 11,20 0,00 >> 8,00 0,00 0,00 0,00 0,00 >> >> avg-cpu: %user %nice %system %iowait %steal %idle >> 0,99 0,00 0,99 1,98 0,00 96,04 >> >> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >> avgrq-sz avgqu-sz await svctm %util >> md0 0,00 0,00 2719,00 0,00 10,62 0,00 >> 8,00 0,00 0,00 0,00 0,00 >> >> avg-cpu: %user %nice %system %iowait %steal %idle >> 0,00 0,00 0,00 0,00 0,00 100,00 >> >> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >> avgrq-sz avgqu-sz await svctm %util >> md0 0,00 0,00 1264,00 0,00 4,94 0,00 >> 8,00 0,00 0,00 0,00 0,00 >> >> >> File copy from Dom0 shows up a normal behavior: >> >> >> avg-cpu: %user %nice %system %iowait %steal %idle >> 0,99 0,00 13,86 78,22 0,00 6,93 >> >> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >> avgrq-sz avgqu-sz await svctm %util >> md0 0,00 0,00 13504,00 13325,00 52,75 >> 52,05 8,00 0,00 0,00 0,00 0,00 >> >> avg-cpu: %user %nice %system %iowait %steal %idle >> 0,00 0,00 10,00 81,00 0,00 9,00 >> >> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >> avgrq-sz avgqu-sz await svctm %util >> md0 0,00 0,00 11155,45 11163,37 43,58 >> 43,61 8,00 0,00 0,00 0,00 0,00 >> >> avg-cpu: %user %nice %system %iowait %steal %idle >> 0,00 0,00 15,84 76,24 0,99 6,93 >> >> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >> avgrq-sz avgqu-sz await svctm %util >> md0 0,00 0,00 12226,00 12302,00 47,76 >> 48,05 8,00 0,00 0,00 0,00 0,00 >> >> I am running xen 3.3.1 on Debian Lenny Dom0, Kernel 2.6.26-1-xen-amd64. >> >> Thanks a lot >> >> Stefan >> >> >> >> _______________________________________________ >> Xen-users mailing list >> Xen-users@lists.xensource.com >> http://lists.xensource.com/xen-users >> >> >> >> >> >> _______________________________________________ >> Xen-users mailing list >> Xen-users@lists.xensource.com >> http://lists.xensource.com/xen-users >> >> > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
I also have strange IO problem, though not sure if it is the problem of the driver of the adapter or of other... I would use md RAID1 devices and lvm on the top of them... and now the question is the filesystem: ext3, reiserfs or xfs or else? I have an inherited system with reiserfs on the lvm partitions above the md devices both in dom0 and domU-s. I also have a separate xensave lvm partition but with xfs... The xm save command for a domU with 4-6G mem sometimes takes 8-10 min! Though I use it not frequently and therefore I did not do much investigation about it.... It is likely that the IO operations are also influenced whether the dom0 has a dedicated core or not... Are there docs or howtos about these (optimal CPU setup, partitioning and fs choosing) or benchmarks? I am not an expert and I am even not sure what should be an appropriate test procedure... Currently I use debian-etch and xen-3.2.1 with 2.6.18 kernel -- Zsolt As probably Fajar has suggested, I have: (XEN) Command line: console=vga vga=gfx-1024x768x8 dom0_mem=512M dom0_vcpus_pin apic_verbosity=debug cpufreq=dom0-kernel acpi=on numa=on in xend-config.sxp: (dom0-min-mem 196) (dom0-cpus 1) xm list: Name ID Mem VCPUs State Time(s) Domain-0 0 512 1 r----- 14695.7 cosmos 1 512 1 -b---- 4275.0 xp_hvm 2 512 1 r----- 287362.6 linserver 3 6144 4 -b---- 3366.1 w2003_hvm 6 6144 4 ------ 4805.5 xm vcpu-list Name ID VCPU CPU State Time(s) CPU Aff. Domain-0 0 0 0 r-- 14684.9 0 Domain-0 0 1 - --p 1.8 1 Domain-0 0 2 - --p 1.8 2 Domain-0 0 3 - --p 1.3 3 Domain-0 0 4 - --p 1.1 4 Domain-0 0 5 - --p 1.5 5 Domain-0 0 6 - --p 1.9 6 Domain-0 0 7 - --p 2.9 7 cosmos 1 0 1 -b- 4276.2 any cpu xp_hvm 2 0 3 r-- 287397.8 3-4 linserver 3 0 5 -b- 2482.6 any cpu linserver 3 1 5 -b- 182.0 any cpu linserver 3 2 4 -b- 423.7 any cpu linserver 3 3 2 -b- 277.8 any cpu w2003_hvm 6 0 6 -b- 1120.6 4-7 w2003_hvm 6 1 7 -b- 507.5 4-7 w2003_hvm 6 2 4 -b- 2617.5 4-7 w2003_hvm 6 3 5 -b- 560.8 4-7 (cosmos and linserver got "any cpu" after xm restore... before xm save they had 3-4 and 1-3,5... but I am not really sure what woulde be the optimal config: cosmos and xp_hvm have not much load, linserver and w2003_hvm serve a 15-20 client classroom but the terminals usually have either linux only or windows rdesktop only sessions...) _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi,> what are the mount options (/etc/fstab) on the DomU ? > In the xen-tools "partitions.d" example, "sync" is used, which give > poor performance. >this is my fstab (DomU) # /etc/fstab: static file system information. # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc defaults 0 0 devpts /dev/pts devpts rw,noexec,nosuid,gid=5,mode=620 0 0 /dev/sda1 none swap sw 0 0 /dev/sda2 / ext3 noatime,nodiratime,errors=remount-ro 0 1 Stefan> Olivier > > Stefan Below a écrit : >> This is the domU config file: >> >> kernel = "/usr/lib/xen/boot/pv-grub-x86_64.gz" >> >> >> memory = ''2048'' >> vcpus=2 >> >> disk = [ >> ''phy:/dev/vg0/tsIbex-disk,xvda,w'', >> ''phy:/dev/vg0/tsIbex-swap,xvdb,w'', >> ] >> >> extra = "(hd0)/boot/grub/menu.lst" >> name = ''tsIbex'' >> >> vif = [ ''ip=192.xxx.xxx.xxx,mac=xx:xx:xx:xx:xx'' ] >> >> on_poweroff = ''destroy'' >> on_reboot = ''restart'' >> on_crash = ''restart'' >> >> >> Dom0 Hardware and configuration: >> Q6600 with 8GB RAM >> sw Raid10,f2 Layout with 4 disks (i know, hardware raid is >> better.....) (storage for DomU via LVM) >> sw Raid1 with 4 disks for Dom0 root partition >> >> Debian Lenny, xen 3.3.1, with Kernel 2.6.26-1-xen-amd64. >> >> Anything else i should provide? >> >> Thanks, >> Stefan >> >> >> >>> Could use some more detail - DomU config and a description of the >>> storage and hardware would be good. >>> >>> Best Regards >>> Nathan Eisenberg >>> Sr. Systems Administrator >>> Atlas Networks, LLC >>> support@atlasnetworks.us >>> http://support.atlasnetworks.us/portal >>> >>> >>> -----Original Message----- >>> From: xen-users-bounces@lists.xensource.com >>> [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Stefan >>> Below >>> Sent: Tuesday, June 16, 2009 12:50 PM >>> To: xen-users@lists.xensource.com >>> Subject: [Xen-users] DomU IO issue >>> >>> Hello, >>> >>> i have a a big io issue with my PV-Guest (Ubuntu 9.04). When i write >>> or copy large files, the hdd performance is very slow. >>> >>> This is my iostat output. It looks like that the datat is not >>> reading and written the same time. >>> >>> File copy in DomU (PV Guest, LVM) >>> >>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>> avgrq-sz avgqu-sz await svctm %util >>> md0 0,00 0,00 1718,00 2816,00 6,71 >>> 11,00 8,00 0,00 0,00 0,00 0,00 >>> >>> avg-cpu: %user %nice %system %iowait %steal %idle >>> 0,00 0,00 1,00 0,00 0,00 99,00 >>> >>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>> avgrq-sz avgqu-sz await svctm %util >>> md0 0,00 0,00 2232,67 0,00 8,72 >>> 0,00 8,00 0,00 0,00 0,00 0,00 >>> >>> avg-cpu: %user %nice %system %iowait %steal %idle >>> 0,00 0,00 1,98 0,00 0,99 97,03 >>> >>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>> avgrq-sz avgqu-sz await svctm %util >>> md0 0,00 0,00 1079,00 4959,00 4,21 >>> 19,37 8,00 0,00 0,00 0,00 0,00 >>> >>> avg-cpu: %user %nice %system %iowait %steal %idle >>> 0,00 0,00 1,00 0,00 0,00 99,00 >>> >>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>> avgrq-sz avgqu-sz await svctm %util >>> md0 0,00 0,00 2866,00 0,00 11,20 >>> 0,00 8,00 0,00 0,00 0,00 0,00 >>> >>> avg-cpu: %user %nice %system %iowait %steal %idle >>> 0,99 0,00 0,99 1,98 0,00 96,04 >>> >>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>> avgrq-sz avgqu-sz await svctm %util >>> md0 0,00 0,00 2719,00 0,00 10,62 >>> 0,00 8,00 0,00 0,00 0,00 0,00 >>> >>> avg-cpu: %user %nice %system %iowait %steal %idle >>> 0,00 0,00 0,00 0,00 0,00 100,00 >>> >>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>> avgrq-sz avgqu-sz await svctm %util >>> md0 0,00 0,00 1264,00 0,00 4,94 >>> 0,00 8,00 0,00 0,00 0,00 0,00 >>> >>> >>> File copy from Dom0 shows up a normal behavior: >>> >>> >>> avg-cpu: %user %nice %system %iowait %steal %idle >>> 0,99 0,00 13,86 78,22 0,00 6,93 >>> >>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>> avgrq-sz avgqu-sz await svctm %util >>> md0 0,00 0,00 13504,00 13325,00 52,75 >>> 52,05 8,00 0,00 0,00 0,00 0,00 >>> >>> avg-cpu: %user %nice %system %iowait %steal %idle >>> 0,00 0,00 10,00 81,00 0,00 9,00 >>> >>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>> avgrq-sz avgqu-sz await svctm %util >>> md0 0,00 0,00 11155,45 11163,37 43,58 >>> 43,61 8,00 0,00 0,00 0,00 0,00 >>> >>> avg-cpu: %user %nice %system %iowait %steal %idle >>> 0,00 0,00 15,84 76,24 0,99 6,93 >>> >>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>> avgrq-sz avgqu-sz await svctm %util >>> md0 0,00 0,00 12226,00 12302,00 47,76 >>> 48,05 8,00 0,00 0,00 0,00 0,00 >>> >>> I am running xen 3.3.1 on Debian Lenny Dom0, Kernel 2.6.26-1-xen-amd64. >>> >>> Thanks a lot >>> >>> Stefan >>> >>> >>> >>> _______________________________________________ >>> Xen-users mailing list >>> Xen-users@lists.xensource.com >>> http://lists.xensource.com/xen-users >>> >>> >>> >>> >>> >>> _______________________________________________ >>> Xen-users mailing list >>> Xen-users@lists.xensource.com >>> http://lists.xensource.com/xen-users >>> >>> >> >> >> _______________________________________________ >> Xen-users mailing list >> Xen-users@lists.xensource.com >> http://lists.xensource.com/xen-users > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi, i have the same issue with hvm guest. It looks like that the data reading and writing is sequential. But i have no clue waht i can do. Disk performance on the same device is under Dom0 is fine. Stefan> Hi, >> what are the mount options (/etc/fstab) on the DomU ? >> In the xen-tools "partitions.d" example, "sync" is used, which give >> poor performance. >> > this is my fstab (DomU) > # /etc/fstab: static file system information. > # > # <file system> <mount point> <type> <options> <dump> <pass> > proc /proc proc defaults 0 0 > devpts /dev/pts devpts > rw,noexec,nosuid,gid=5,mode=620 0 0 > /dev/sda1 none swap sw 0 0 > /dev/sda2 / ext3 noatime,nodiratime,errors=remount-ro 0 1 > > Stefan > > > > >> Olivier >> >> Stefan Below a écrit : >>> This is the domU config file: >>> >>> kernel = "/usr/lib/xen/boot/pv-grub-x86_64.gz" >>> >>> >>> memory = ''2048'' >>> vcpus=2 >>> >>> disk = [ >>> ''phy:/dev/vg0/tsIbex-disk,xvda,w'', >>> ''phy:/dev/vg0/tsIbex-swap,xvdb,w'', >>> ] >>> >>> extra = "(hd0)/boot/grub/menu.lst" >>> name = ''tsIbex'' >>> >>> vif = [ ''ip=192.xxx.xxx.xxx,mac=xx:xx:xx:xx:xx'' ] >>> >>> on_poweroff = ''destroy'' >>> on_reboot = ''restart'' >>> on_crash = ''restart'' >>> >>> >>> Dom0 Hardware and configuration: >>> Q6600 with 8GB RAM >>> sw Raid10,f2 Layout with 4 disks (i know, hardware raid is >>> better.....) (storage for DomU via LVM) >>> sw Raid1 with 4 disks for Dom0 root partition >>> >>> Debian Lenny, xen 3.3.1, with Kernel 2.6.26-1-xen-amd64. >>> >>> Anything else i should provide? >>> >>> Thanks, >>> Stefan >>> >>> >>> >>>> Could use some more detail - DomU config and a description of the >>>> storage and hardware would be good. >>>> >>>> Best Regards >>>> Nathan Eisenberg >>>> Sr. Systems Administrator >>>> Atlas Networks, LLC >>>> support@atlasnetworks.us >>>> http://support.atlasnetworks.us/portal >>>> >>>> >>>> -----Original Message----- >>>> From: xen-users-bounces@lists.xensource.com >>>> [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Stefan >>>> Below >>>> Sent: Tuesday, June 16, 2009 12:50 PM >>>> To: xen-users@lists.xensource.com >>>> Subject: [Xen-users] DomU IO issue >>>> >>>> Hello, >>>> >>>> i have a a big io issue with my PV-Guest (Ubuntu 9.04). When i >>>> write or copy large files, the hdd performance is very slow. >>>> >>>> This is my iostat output. It looks like that the datat is not >>>> reading and written the same time. >>>> >>>> File copy in DomU (PV Guest, LVM) >>>> >>>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>>> avgrq-sz avgqu-sz await svctm %util >>>> md0 0,00 0,00 1718,00 2816,00 6,71 >>>> 11,00 8,00 0,00 0,00 0,00 0,00 >>>> >>>> avg-cpu: %user %nice %system %iowait %steal %idle >>>> 0,00 0,00 1,00 0,00 0,00 99,00 >>>> >>>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>>> avgrq-sz avgqu-sz await svctm %util >>>> md0 0,00 0,00 2232,67 0,00 8,72 >>>> 0,00 8,00 0,00 0,00 0,00 0,00 >>>> >>>> avg-cpu: %user %nice %system %iowait %steal %idle >>>> 0,00 0,00 1,98 0,00 0,99 97,03 >>>> >>>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>>> avgrq-sz avgqu-sz await svctm %util >>>> md0 0,00 0,00 1079,00 4959,00 4,21 >>>> 19,37 8,00 0,00 0,00 0,00 0,00 >>>> >>>> avg-cpu: %user %nice %system %iowait %steal %idle >>>> 0,00 0,00 1,00 0,00 0,00 99,00 >>>> >>>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>>> avgrq-sz avgqu-sz await svctm %util >>>> md0 0,00 0,00 2866,00 0,00 11,20 >>>> 0,00 8,00 0,00 0,00 0,00 0,00 >>>> >>>> avg-cpu: %user %nice %system %iowait %steal %idle >>>> 0,99 0,00 0,99 1,98 0,00 96,04 >>>> >>>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>>> avgrq-sz avgqu-sz await svctm %util >>>> md0 0,00 0,00 2719,00 0,00 10,62 >>>> 0,00 8,00 0,00 0,00 0,00 0,00 >>>> >>>> avg-cpu: %user %nice %system %iowait %steal %idle >>>> 0,00 0,00 0,00 0,00 0,00 100,00 >>>> >>>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>>> avgrq-sz avgqu-sz await svctm %util >>>> md0 0,00 0,00 1264,00 0,00 4,94 >>>> 0,00 8,00 0,00 0,00 0,00 0,00 >>>> >>>> >>>> File copy from Dom0 shows up a normal behavior: >>>> >>>> >>>> avg-cpu: %user %nice %system %iowait %steal %idle >>>> 0,99 0,00 13,86 78,22 0,00 6,93 >>>> >>>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>>> avgrq-sz avgqu-sz await svctm %util >>>> md0 0,00 0,00 13504,00 13325,00 52,75 >>>> 52,05 8,00 0,00 0,00 0,00 0,00 >>>> >>>> avg-cpu: %user %nice %system %iowait %steal %idle >>>> 0,00 0,00 10,00 81,00 0,00 9,00 >>>> >>>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>>> avgrq-sz avgqu-sz await svctm %util >>>> md0 0,00 0,00 11155,45 11163,37 43,58 >>>> 43,61 8,00 0,00 0,00 0,00 0,00 >>>> >>>> avg-cpu: %user %nice %system %iowait %steal %idle >>>> 0,00 0,00 15,84 76,24 0,99 6,93 >>>> >>>> Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s >>>> avgrq-sz avgqu-sz await svctm %util >>>> md0 0,00 0,00 12226,00 12302,00 47,76 >>>> 48,05 8,00 0,00 0,00 0,00 0,00 >>>> >>>> I am running xen 3.3.1 on Debian Lenny Dom0, Kernel >>>> 2.6.26-1-xen-amd64. >>>> >>>> Thanks a lot >>>> >>>> Stefan >>>> >>>> >>>> >>>> _______________________________________________ >>>> Xen-users mailing list >>>> Xen-users@lists.xensource.com >>>> http://lists.xensource.com/xen-users >>>> >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> Xen-users mailing list >>>> Xen-users@lists.xensource.com >>>> http://lists.xensource.com/xen-users >>>> >>>> >>> >>> >>> _______________________________________________ >>> Xen-users mailing list >>> Xen-users@lists.xensource.com >>> http://lists.xensource.com/xen-users >> >> >> _______________________________________________ >> Xen-users mailing list >> Xen-users@lists.xensource.com >> http://lists.xensource.com/xen-users >> > > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users