Don't go down that road. Status shouldn't be saved in the db.
But anyway statistics is rapidly changing. So it fits...
On Apr 3, 2014 5:14 PM, Gilad Chaplik gchap...@redhat.com wrote:
- Original Message -
From: Liran Zelkha liran.zel...@gmail.com
To: Eli Mesika emes...@redhat.com
True but that's no reason to have a bad schema
On Apr 3, 2014 5:18 PM, Gilad Chaplik gchap...@redhat.com wrote:
- Original Message -
From: Liran Zelkha liran.zel...@gmail.com
To: Gilad Chaplik gchap...@redhat.com
Cc: Eli Mesika emes...@redhat.com, engine-devel
engine-devel
On Thu, Apr 3, 2014 at 5:33 PM, Gilad Chaplik gchap...@redhat.com wrote:
*From: *Liran Zelkha liran.zel...@gmail.com
*To: *Gilad Chaplik gchap...@redhat.com
*Cc: *Omer Frenkel ofren...@redhat.com, Eli Mesika
emes...@redhat.com, engine-devel engine-devel@ovirt.org
*Sent: *Thursday, April 3
On Fri, Apr 4, 2014 at 3:15 PM, Itamar Heim ih...@redhat.com wrote:
On 04/04/2014 04:30 AM, Liran Zelkha wrote:
On Thu, Apr 3, 2014 at 8:40 PM, Gilad Chaplik gchap...@redhat.com
mailto:gchap...@redhat.com wrote:
- Original Message -
From: Liran Zelkha liran.zel
Why not move it to vds_static?
On Thu, Apr 3, 2014 at 2:00 PM, Gilad Chaplik gchap...@redhat.com wrote:
Hi list,
I propose to split vds_dynamic table into 2 tables:
- vds_dynamic
- vds_on_boot
We need a place to put all non-dynamic data that gets updated once the
host is booted, and I
Zaslavsky yzasl...@redhat.com
Cc: engine-devel engine-devel@ovirt.org
Sent: Thursday, April 3, 2014 4:00:25 PM
Subject: Re: [Engine-devel] vds_dynamic refactor
- Original Message -
From: Yair Zaslavsky yzasl...@redhat.com
To: Liran Zelkha liran.zel...@gmail.com
Cc: Gilad
Happens to me too, on engine_dao_tests.
DB is not empty, one line:
engine_dao_tests= select * from event_subscriber;
subscriber_id | event_up_name | method_id |
method_address | tag_name | notification_method
had the same issue. Run from psql:
truncate table event_subscriber;
Then run the script. Note that this will delete all the rows from your
table...
On Tue, Mar 4, 2014 at 3:18 PM, Adam Litke ali...@redhat.com wrote:
On 04/03/14 00:10 -0500, Martin Perina wrote:
Hi Adam,
I didn't notice any
Hi All,
As part of an ongoing effort to improve oVirt performance, we're trying to
reduce the number of Dynamic Queries usage in the code, and replace it with
Postgres stored procedures. You wouldn't believe the performance gain.
Please consider before making use of the Dynamic Queries feature -
Hi
Please don't add rapidly changing data to VDSDynamic - it has major
performance implications.
So, choose option B. Actually, try to expose relevant data in VDSDynamic
and VDSStatistics, and VDS should call VDSDynamic and VDSStatistics and
merge the data from both entities.
On Thu, Feb 20,
Anybody knows how to install RHEVM DWH version 3.2 using the
subscription-manager?
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Note that you can usually get all the information you want using 1 API
call, which should still scale.
For instance, /ovirt-engine/api/vms will give you a list of all VMs and
their statuses, so you can just run an XPath and get the status of all of
them.
On Tue, Dec 17, 2013 at 10:18 AM, Itamar
I've added a wiki page on Engine HA.
http://www.ovirt.org/Features/Engine_High_Availability
Please add your comments, we'll try to make this an ongoing effort.
On Sat, Aug 24, 2013 at 3:25 PM, Liran Zelkha liran.zel...@gmail.comwrote:
IMHO EJB clustering is not the direction we should take
+1
- Original Message -
From: Mooli Tayer mta...@redhat.com
To: engine-devel engine-devel@ovirt.org
Sent: Tuesday, August 27, 2013 2:29:01 PM
Subject: [Engine-devel] Java Development Lifecycle
Hello,
I've been working on the engine for a few month now,
And I feel I have not yet been
IMHO EJB clustering is not the direction we should take, especially considering
our IoC plans (see http://gerrit.ovirt.org/#/c/5575/).
QuartzScheduler can be easily fixed by using a DB for Quartz configuration. We
had such a discussion a few weeks ago.
mod_jk is probably better for our HA.
Hi all
As part of our effort to get profiling licenses to the ovirt contributors,
we need to place an image of JProfiler (the chosen profiler) on the home
page of ovirt.org.
Anyone here knows who has the rights to do that?
Thanks
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Loaded average of a system that only runs update runtime info
On Jul 3, 2013 2:45 PM, Michal Skrivanek mskri...@redhat.com wrote:
- Forwarded Message -
From: Liran Zelkha liran.zel...@gmail.com
To: engine-devel engine-devel@ovirt.org
Cc: Itamar Heim ih...@redhat.com, Barak
Awesome!!!
On Mon, Jul 1, 2013 at 10:29 AM, Allon Mureinik amure...@redhat.com wrote:
- Original Message -
From: Liran Zelkha liran.zel...@gmail.com
To: Yair Zaslavsky yzasl...@redhat.com
Cc: Allon Mureinik amure...@redhat.com, engine-devel
engine-devel@ovirt.org
Sent
Great news.
Allon - please note that GUID is being recreated from String by both DB calls
and by data received from VDSM. It is VERY useful to cache Guid String--Guid,
and not just Empty GUID.
However, as the Guid class runs in GWT as well, you can't use Infinispan and
you're limited in the
I checked such a solution using JProfiler. Creating the GUID object takes much
more CPU cycles that checking the string in the Map.
On Jun 30, 2013, at 12:06 PM, Michael Pasternak wrote:
On 06/30/2013 11:37 AM, Liran Zelkha wrote:
Great news.
Allon - please note that GUID is being recreated
Why synchronization? No need for it. Worst case scenario a put (which should be
much less common then get) will occur twice on the same key.
On Jun 30, 2013, at 1:00 PM, Michael Pasternak wrote:
On 06/30/2013 12:45 PM, Liran Zelkha wrote:
All is true. But average UUID.fromString execution
Sure. I agree. I'd be happy to show you the results in the profiler, so we can
make a correct decision.
On Jun 30, 2013, at 1:23 PM, Michael Pasternak wrote:
On 06/30/2013 01:15 PM, Michael Pasternak wrote:
On 06/30/2013 01:08 PM, Liran Zelkha wrote:
Why synchronization? No need
) UpdateRuntimeInfo
performance wasted roughly 40% of CPU time on DB activity. And only 12% of that
was wasted on update behavior.
My next task is to try and optimize the rest of overall database performance.
- Original Message -
From: Liran Zelkha liran.zel...@gmail.com
To: Barak Azulay bazu
Batch updates for UpdateVmDeviceRuntimeInfo, UpdateVdsInterfaceStatistics and
UpdateVdsDynamic.
All improved execution performance by about 60-80%.
On Jun 12, 2013, at 4:05 PM, Itamar Heim wrote:
On 06/12/2013 04:03 PM, Liran Zelkha wrote:
Hi all,
Current status of VdsUpdateRuntimeInfo
Hi all,
I'm checking performance for VdsUpdateRunTimeInfo.
Naturally, much of the performance surrounds database activity
(getVmsRunningOnVds queries, updateDeviceRuntimeInfo, updateVmDynamic)
Few questions:
1. I have implemented batch updates for procedure UpdateVmDeviceRuntimeInfo for
Will do. Thanks.
On Mon, Jun 10, 2013 at 3:44 PM, Livnat Peer lp...@redhat.com wrote:
On 06/04/2013 02:43 PM, Liran Zelkha wrote:
Hi all,
I've added a new feature page for Performance and Scalability. Please
review and add your ideas...
http://www.ovirt.org/Features
Hi all,
I've added a new feature page for Performance and Scalability. Please review
and add your ideas...
http://www.ovirt.org/Features/Performance_And_Scalability
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-
From: Laszlo Hornyak lhorn...@redhat.com
To: Liran Zelkha lzel...@redhat.com
Cc: engine-devel engine-devel@ovirt.org
Sent: Tuesday, June 4, 2013 5:01:37 PM
Subject: Re: [Engine-devel] Performance and scalability
Hi Liran,
Some comments to start the discussion:
- Caching: exactly how
Hi all,
There is a WIP for caching and DB performance optimization. Please look at -
http://gerrit.ovirt.org/#/c/14188/4
To summarize, it includes automatic caching for some business entities
(*_static for instance), break up of VDS to VDS_static, VDS_dynamic and
VDS_statistics, and support
Awesome. I really need this for the stress tests I'm running. How many hosts
were you able to simulate with one web application?
- Original Message -
From: Libor Spevak lspe...@redhat.com
To: engine-devel@ovirt.org
Sent: Tuesday, April 30, 2013 12:50:52 PM
Subject: [Engine-devel] VDSM
Why not do use the same technology like JBoss DataSource password
encryption?
http://docs.jboss.org/jbosssecurity/docs/6.0/security_guide/html/Encrypting_Data_Source_Passwords.html
On Wed, May 1, 2013 at 3:45 AM, Eli Mesika emes...@redhat.com wrote:
- Original Message -
From: Alon
Hi
I've created Change I04d7edea (http://gerrit.ovirt.org/#/c/14188/) that adds
automatic database caching capabilities to the engine.
To cache a business entity, just add an annotation called TimeToLiveInCache
that accepts as a parameter the number of seconds this object can live in the
cache
Great news. I totally agree that Infinispan is the right way to go.
Michael - let's sync on the database caching integration with Infinispan. Would
love to hear your thoughts.
- Original Message -
From: Yair Zaslavsky yzasl...@redhat.com
To: Michael Kublin mkub...@redhat.com
Cc:
the performance in engine.
Laszlo
- Original Message -
From: Liran Zelkha lzel...@redhat.com
To: Eli Mesika emes...@redhat.com
Cc: engine-devel@ovirt.org
Sent: Tuesday, April 2, 2013 7:24:08 AM
Subject: Re: [Engine-devel] Move SQL out of stored procedures
I also apologize
Hi
I think externalizing SQL can lead to a VERY difficult maintenance. But, as
long as we stick to SQL (or stored procedures, just not ORM), I don't mind…
On Apr 2, 2013, at 10:19 AM, Yair Zaslavsky wrote:
- Original Message -
From: Libor Spevak lspe...@redhat.com
To: Juan
I also apologize for jumping in late...
I think concerning SQL injection we'll be covered by using PreparedStatements.
Since we're using SpringJDBC, most of our code uses PreparedStatements anyway.
Concerning ORM - I feel it won't really be beneficial to us. I know of very few
projects who can
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