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From "Rafael Weingartner (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-3048) Memory not reported correctly
Date Wed, 29 Jan 2014 11:56:11 GMT


Rafael Weingartner commented on CLOUDSTACK-3048:

I am also experiencing this problem on CS 4.1.1. As a matter of fact, I see two problems.

1 - the CS does not seem to properly monitor the memory usage on hosts.

2 - I took a look at the CS code, and the problem that you were experiencing was that, it
considers the reserved memory at the time when it is deploying a new VM, that is why you were
not able to start a new VM. This reserved memory value represents the amount of memory that
would be needed if all the VMs that were created and are down would need if they all started
at the same time.

I think it should have a parameter, so the CS manager could decide if he/she wants to use
the reserved memory as a reference point to decide if VM would be started or not on a host,
or if he/she wants to use the actual values in each host to decide if the VMs can be started
or not there.

> Memory not reported correctly
> -----------------------------
>                 Key: CLOUDSTACK-3048
>                 URL:
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>    Affects Versions: 4.1.0
>            Reporter: drcursor
> I have two hosts, each with 128GB RAM ( 131985592 kb ).
> Inside the Cloudstack Dashboard and in Zone Details, total memory is
> incorrectly reported as 62.74 GB (instead of ~ 256GB).
> If I check the host's details, I have the following information:
> Host 1:
> Memory Total 125.87 GB
> Memory Allocated 9.38 GB
> Memory Used 9.33 MB
> Host 2:
> Memory Total 125.87 GB
> Memory Allocated 31.19 GB
> Memory Used 16.52 MB
> Problem I am having now is I can't launch new instances - if I try to
> launch them on Host 1, I get the following error "Free RAM: 734232576
> , Requested RAM: 1073741824 / Host does not have enough RAM available,
> cannot allocate to this host".
> Is there a way to make all RAM available ?

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