Hello folks I have a Engine dedicated machine running with 4GB of memory. It has been working fine without any apparent issues. If I check the system memory usage it rarely goes over 1.5GB. But when I upgrade oVirt Engine it complains with the following message: "[WARNING] Less than 16384MB of memory is available". Why is all that required if the real usage doesn't show that need ? Or am I missing anything ? Fernando Frediani
16GB is just the recommended amount of memory. The more items your Engine has to manage, the more memory it will consume, so whilst it might not be using that amount of memory at the moment, it will do as you expand your cluster. On 20 February 2017 at 16:22, FERNANDO FREDIANI <fernando.frediani@upx.com> wrote:
Hello folks
I have a Engine dedicated machine running with 4GB of memory. It has been working fine without any apparent issues.
If I check the system memory usage it rarely goes over 1.5GB.
But when I upgrade oVirt Engine it complains with the following message: "[WARNING] Less than 16384MB of memory is available".
Why is all that required if the real usage doesn't show that need ? Or am I missing anything ?
Fernando Frediani
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Doug
On Feb 20, 2017 9:35 PM, "Doug Ingham" <dougti@gmail.com> wrote: 16GB is just the recommended amount of memory. The more items your Engine has to manage, the more memory it will consume, so whilst it might not be using that amount of memory at the moment, it will do as you expand your cluster. It will never really need this amount of memory. There is no reason to configure the heap for 16gb. On 20 February 2017 at 16:22, FERNANDO FREDIANI <fernando.frediani@upx.com> wrote:
Hello folks
I have a Engine dedicated machine running with 4GB of memory. It has been working fine without any apparent issues.
If I check the system memory usage it rarely goes over 1.5GB.
But when I upgrade oVirt Engine it complains with the following message: "[WARNING] Less than 16384MB of memory is available".
Please open a bug with all the details, we should address that.
Why is all that required if the real usage doesn't show that need ? Or am I missing anything ?
Fernando Frediani
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Doug _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On Mon, Feb 20, 2017 at 9:39 PM, Roy Golan <rgolan@redhat.com> wrote:
On Feb 20, 2017 9:35 PM, "Doug Ingham" <dougti@gmail.com> wrote:
16GB is just the recommended amount of memory. The more items your Engine has to manage, the more memory it will consume, so whilst it might not be using that amount of memory at the moment, it will do as you expand your cluster.
It will never really need this amount of memory. There is no reason to configure the heap for 16gb.
On 20 February 2017 at 16:22, FERNANDO FREDIANI <fernando.frediani@upx.com
wrote:
Hello folks
I have a Engine dedicated machine running with 4GB of memory. It has been working fine without any apparent issues.
If I check the system memory usage it rarely goes over 1.5GB.
But when I upgrade oVirt Engine it complains with the following message: "[WARNING] Less than 16384MB of memory is available".
Please open a bug with all the details, we should address that.
Currently we are tuning the java heap size to 1/4 of the system memory. On hosted-engine-setup side we propose to assign to the engine VM 16GB (so java heap = 4GB) as recommended and 4GB as a minimum suggested value.
Why is all that required if the real usage doesn't show that need ? Or am I missing anything ?
Fernando Frediani
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Doug
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On Tue, Feb 21, 2017 at 12:12 AM Simone Tiraboschi <stirabos@redhat.com> wrote:
On Mon, Feb 20, 2017 at 9:39 PM, Roy Golan <rgolan@redhat.com> wrote:
On Feb 20, 2017 9:35 PM, "Doug Ingham" <dougti@gmail.com> wrote:
16GB is just the recommended amount of memory. The more items your Engine has to manage, the more memory it will consume, so whilst it might not be using that amount of memory at the moment, it will do as you expand your cluster.
It will never really need this amount of memory. There is no reason to configure the heap for 16gb.
On 20 February 2017 at 16:22, FERNANDO FREDIANI <fernando.frediani@upx.com
wrote:
Hello folks
I have a Engine dedicated machine running with 4GB of memory. It has been working fine without any apparent issues.
If I check the system memory usage it rarely goes over 1.5GB.
But when I upgrade oVirt Engine it complains with the following message: "[WARNING] Less than 16384MB of memory is available".
Please open a bug with all the details, we should address that.
Currently we are tuning the java heap size to 1/4 of the system memory. On hosted-engine-setup side we propose to assign to the engine VM 16GB (so java heap = 4GB) as recommended and 4GB as a minimum suggested value.
So for a machine with 64Gb we would put 16Gb doesn't make sense.(for non hosted engine but in the future this may change) . we should elaborate the calculation to top 4Gb. Also what is the purpose of the warning that you have less than 16Gb of available ram?
Why is all that required if the real usage doesn't show that need ? Or am I missing anything ?
Fernando Frediani
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Doug
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On Mon, Feb 20, 2017 at 9:39 PM, Roy Golan <rgolan@redhat.com> wrote:
On Feb 20, 2017 9:35 PM, "Doug Ingham" <dougti@gmail.com> wrote:
16GB is just the recommended amount of memory. The more items your Engine has to manage, the more memory it will consume, so whilst it might not be using that amount of memory at the moment, it will do as you expand your cluster.
It will never really need this amount of memory. There is no reason to configure the heap for 16gb.
Roy, can you please provide new values for minimum amount required and recommended amount in a bugzilla request? They're pretty much untouched since 3.2 and if we don't need them anymore I'm more than happy to lower the bar.
On 20 February 2017 at 16:22, FERNANDO FREDIANI <fernando.frediani@upx.com
wrote:
Hello folks
I have a Engine dedicated machine running with 4GB of memory. It has been working fine without any apparent issues.
If I check the system memory usage it rarely goes over 1.5GB.
But when I upgrade oVirt Engine it complains with the following message: "[WARNING] Less than 16384MB of memory is available".
Please open a bug with all the details, we should address that.
Why is all that required if the real usage doesn't show that need ? Or am I missing anything ?
Fernando Frediani
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Doug
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
-- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com
participants (5)
-
Doug Ingham -
FERNANDO FREDIANI -
Roy Golan -
Sandro Bonazzola -
Simone Tiraboschi