Re: [ovirt-users] Memory for Engine Machine

[Sandro Bonazzola]

On Mon, Feb 20, 2017 at 9:39 PM, Roy Golan  wrote:

>
>
> On Feb 20, 2017 9:35 PM, "Doug Ingham"  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  > 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
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> http://lists.ovirt.org/mailman/listinfo/users
>
>
>
> ___
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> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>


-- 
Sandro Bonazzola
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Re: [ovirt-users] Memory for Engine Machine

[Roy Golan]

On Tue, Feb 21, 2017 at 12:12 AM Simone Tiraboschi 
wrote:

> On Mon, Feb 20, 2017 at 9:39 PM, Roy Golan  wrote:
>
>
>
> On Feb 20, 2017 9:35 PM, "Doug Ingham"  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  > 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
>
>
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Re: [ovirt-users] Memory for Engine Machine

[Simone Tiraboschi]

On Mon, Feb 20, 2017 at 9:39 PM, Roy Golan  wrote:

>
>
> On Feb 20, 2017 9:35 PM, "Doug Ingham"  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  > 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
>
>
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Re: [ovirt-users] Memory for Engine Machine

[Roy Golan]

On Feb 20, 2017 9:35 PM, "Doug Ingham"  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 
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

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Re: [ovirt-users] Memory for Engine Machine

[Doug Ingham]

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 
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
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[ovirt-users] Memory for Engine Machine

[FERNANDO FREDIANI]

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

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