Hi, everyone, I''m currently using Oracle 10G inside of a Xen domU (SLES10 for both dom0 and domU). In order to get my SAN storage for the database through to the VM, I used a phy: disk mapping on the domU configuration and pointed it at the SAN volume. I''m using Standard Edition One, so I created a filesystem (ext3) and put my Oracle database there. I''m now having issues with really high I/O wait times inside the domU when the database is doing anything more than really light transactions. Can anyone suggest some tuning I might do to improve performance and get this I/O wait time down? The SAN volume is attached via 4Gb iSCSI on a Qlogic card, and the dom0 isn''t seeing any high I/O wait or anything like that. Thanks - Nick -------- This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
2009/4/22 Nick Couchman <Nick.Couchman@seakr.com>:> Hi, everyone, > > I''m currently using Oracle 10G inside of a Xen domU> I''m now having issues with really > high I/O wait times inside the domU when the database is doing anything more > than really light transactions.First of all, in terms of support, AFAIK Oracle only supports Oracle VM for virtualization technology. As for I/O wait times, I suggest you try some generik benchmark first on domU and dom0. At least that would make sure whether the problem is on domU side or somewhere else. Regards, Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Dear All, I was just trying to create a virtual private network with 2 domU and a dom0 My dom0 is RHEL 5.2 and have static IP address. DomU''s are ubuntu 8. In the xen-config I enabled network-script network-nat vif-script vif-nat I edited the "interfaces" file in the domU to set the address as "10.0.0.x" (x as 1,2.. etc). I am able to getting the networking working in the domU''s but I am puzzled with one observation. If I run "ping" on any domU to any IP to outside network machine or to any other domU''s address, it runs and I could see the reply of ping, BUT that console hangs while performing ping and I am not able to terminate the ping operation. The only resort remains is to shutdown the domU. Please suggest if there is something more I should be doing or is it expected result. Thanks! Ata _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Dear All, With respect to my query earlier, I just discovered that it''s not because the problem of networking, but I am not able to terminate (CTRL+C or CTRL+X) any infinite loop program running in Xen domain Us (while(1)). Please suggest me is there a way to program control interfaces in xen domUs. Thanks! Ata From: Ata E Husain Bohra [mailto:aehusain@buffalo.edu] Sent: Tuesday, April 21, 2009 7:09 PM To: ''XEN Mailing List'' Subject: Problem with NAT forwarding! Dear All, I was just trying to create a virtual private network with 2 domU and a dom0 My dom0 is RHEL 5.2 and have static IP address. DomU''s are ubuntu 8. In the xen-config I enabled network-script network-nat vif-script vif-nat I edited the "interfaces" file in the domU to set the address as "10.0.0.x" (x as 1,2.. etc). I am able to getting the networking working in the domU''s but I am puzzled with one observation. If I run "ping" on any domU to any IP to outside network machine or to any other domU''s address, it runs and I could see the reply of ping, BUT that console hangs while performing ping and I am not able to terminate the ping operation. The only resort remains is to shutdown the domU. Please suggest if there is something more I should be doing or is it expected result. Thanks! Ata _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Actually, the Oracle VM site clearly says that OVM is tried and tested with db''s inside DomU. they even templates for 11g and some releases of 10g. Its the ''only'' VM technology that is ''certified'' for use with db''s per the site. On Wed, Apr 22, 2009 at 7:36 AM, Fajar A. Nugraha <fajar@fajar.net> wrote:> 2009/4/22 Nick Couchman <Nick.Couchman@seakr.com>: > > Hi, everyone, > > > > I''m currently using Oracle 10G inside of a Xen domU > > > I''m now having issues with really > > high I/O wait times inside the domU when the database is doing anything > more > > than really light transactions. > > First of all, in terms of support, AFAIK Oracle only supports Oracle > VM for virtualization technology. > As for I/O wait times, I suggest you try some generik benchmark first > on domU and dom0. At least that would make sure whether the problem is > on domU side or somewhere else. > > Regards, > > Fajar > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >-- I have the simplest of tastes; I am easily satisfied with the best. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Tue, Apr 21, 2009 at 03:41:54PM -0600, Nick Couchman wrote:> > Hi, everyone, > I''m currently using Oracle 10G inside of a Xen domU (SLES10 for both dom0 and domU). > In order to get my SAN storage for the database through to the VM, I used a > phy: disk mapping on the domU configuration and pointed it at the SAN volume. > I''m using Standard Edition One, so I created a filesystem (ext3) and put my Oracle database there. > I''m now having issues with really high I/O wait times inside the domU when the database is doing > anything more than really light transactions. Can anyone suggest some tuning I might do to improve > performance and get this I/O wait time down? The SAN volume is attached via 4Gb iSCSI on a Qlogic card, > and the dom0 isn''t seeing any high I/O wait or anything like that. >I''m running Oracle 10g on PV domU, no problems at all. domU disk is on iSCSI LUN, from Equallogic iSCSI SAN. dom0 is RHEL 5.2, and domU is RHEL 5.2 aswell. No high io-wait here. I''d suggest you to benchmark your SAN/LUN setup on dom0 first, and when you''re sure it''s all OK, start benchmarking and tweaking from domU. I can''t remember doing anything special for my setup.. -- Pasi _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
How are you storing your database files? What file system are you using? Thanks! - Nick Nick Couchman Manager, Information Technology -----Original Message----- From: Pasi Kärkkäinen<pasik@iki.fi> To: Nick Couchman <Nick.Couchman@seakr.com> Cc: XEN Mailing List <xen-users@lists.xensource.com> Sent: 4/22/2009 1:29:02 AM Subject: Re: [Xen-users] Oracle in Xen domU On Tue, Apr 21, 2009 at 03:41:54PM -0600, Nick Couchman wrote:> > Hi, everyone, > I'm currently using Oracle 10G inside of a Xen domU (SLES10 for both dom0 and domU). > In order to get my SAN storage for the database through to the VM, I used a > phy: disk mapping on the domU configuration and pointed it at the SAN volume. > I'm using Standard Edition One, so I created a filesystem (ext3) and put my Oracle database there. > I'm now having issues with really high I/O wait times inside the domU when the database is doing > anything more than really light transactions. Can anyone suggest some tuning I might do to improve > performance and get this I/O wait time down? The SAN volume is attached via 4Gb iSCSI on a Qlogic card, > and the dom0 isn't seeing any high I/O wait or anything like that. >I'm running Oracle 10g on PV domU, no problems at all. domU disk is on iSCSI LUN, from Equallogic iSCSI SAN. dom0 is RHEL 5.2, and domU is RHEL 5.2 aswell. No high io-wait here. I'd suggest you to benchmark your SAN/LUN setup on dom0 first, and when you're sure it's all OK, start benchmarking and tweaking from domU. I can't remember doing anything special for my setup.. -- Pasi -------- This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Wed, Apr 22, 2009 at 06:36:58AM -0600, Nick Couchman wrote:> How are you storing your database files? What file system are you using? >in dom0 domU disks are LVM volumes on iSCSI LUN. domU is using ext3 on xvd*. -- Pasi> Thanks! > - Nick > > Nick Couchman > Manager, Information Technology > -----Original Message----- > From: Pasi Kärkkäinen<pasik@iki.fi> > To: Nick Couchman <Nick.Couchman@seakr.com> > Cc: XEN Mailing List <xen-users@lists.xensource.com> > > Sent: 4/22/2009 1:29:02 AM > Subject: Re: [Xen-users] Oracle in Xen domU > > On Tue, Apr 21, 2009 at 03:41:54PM -0600, Nick Couchman wrote: > > > > Hi, everyone, > > I''m currently using Oracle 10G inside of a Xen domU (SLES10 for both dom0 and domU). > > In order to get my SAN storage for the database through to the VM, I used a > > phy: disk mapping on the domU configuration and pointed it at the SAN volume. > > I''m using Standard Edition One, so I created a filesystem (ext3) and put my Oracle database there. > > I''m now having issues with really high I/O wait times inside the domU when the database is doing > > anything more than really light transactions. Can anyone suggest some tuning I might do to improve > > performance and get this I/O wait time down? The SAN volume is attached via 4Gb iSCSI on a Qlogic card, > > and the dom0 isn''t seeing any high I/O wait or anything like that. > > > > I''m running Oracle 10g on PV domU, no problems at all. domU disk is on iSCSI LUN, from Equallogic iSCSI SAN. > > dom0 is RHEL 5.2, and domU is RHEL 5.2 aswell. > > No high io-wait here. > > I''d suggest you to benchmark your SAN/LUN setup on dom0 first, and when > you''re sure it''s all OK, start benchmarking and tweaking from domU. > > I can''t remember doing anything special for my setup.. > > -- Pasi > > > > -------- > This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR._______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users