I am using xen-hypervisor 4.1 and XCP 1.6 if I am not mistaken. I have also never noticed this used memory values until we deployed Zenoss to monitor the cloud. I just noticed that because the Zenoss was generating a graph that presented whole cloud memory usage and it was a little weird. With high allocated values, but pretty low used values.
As in your case, it seems pretty weird to me that we have this huge amount of memory allocated (26GB), but just 28MB are being used. It almost does not make sense. I also should point out that you used the command "free -g", it shows the memory of the DOM0, in your case it just presents the whole amount of memory of your hosts because you are using the auto ballooning option. But in my case, we disabled this, and set static amount of memory and cpus for the DOM0. Does anyone know from where the CS is getting those used memory values? On Thu, Jan 30, 2014 at 5:48 AM, Marty Sweet <msweet....@gmail.com> wrote: > I should also point out that this is on CS 4.2.0. > > This issue may have been fixed since then. > > Marty > > > On Thu, Jan 30, 2014 at 7:41 AM, Marty Sweet <msweet....@gmail.com> wrote: > > > What hypervisor are you using? > > > > My CS System Capacity on the dashboard shows *Memory 157.05 GB / 1.37 TB > *(which > > works + overprovisioning). > > > > I think this issue is slightly different to CLOUDSTACK-3048 as it should > > not effect VM allocation. > > I have never noticed about the memory used section: > > > > Memory Allocated 68.50 GB Memory Used 70.65 MB > > $ free -g > > total used free shared buffers cached > > Mem: 251 250 1 0 0 179 > > -/+ buffers/cache: 70 181 > > Swap: 5 2 2 > > > > > > > > Memory Allocated 22.05 GB Memory Used 24.06 MB > > $ free -g > > total used free shared buffers cached > > Mem: 251 27 223 0 0 3 > > -/+ buffers/cache: 24 227 > > Swap: 2 0 2 > > > > > > Memory Allocated 39.53 GB Memory Used 41.51 MB > > $ free -g > > total used free shared buffers cached > > Mem: 251 42 209 0 0 0 > > -/+ buffers/cache: 41 210 > > Swap: 5 0 5 > > > > > > Memory Allocated 26.97 GB Memory Used 28.46 MB > > $ free -g > > total used free shared buffers cached > > Mem: 141 29 111 0 0 1 > > -/+ buffers/cache: 28 113 > > Swap: 2 0 2 > > > > > > It appears that the units used for 'Memory used' are simply a few factors > > of 10 out. > > > > Can you have a look to see if there is a bug specifically for this? If > not > > feel free to create one using the information I have provided above. > > > > Thanks, > > Marty > > > > > > > > On Wed, Jan 29, 2014 at 6:31 PM, Rafael Weingartner < > > rafaelweingart...@gmail.com> wrote: > > > >> Doesn't anyone think that those memory values presented on > >> infrastructure>hosts are a little odd? > >> > >> > >> On Tue, Jan 28, 2014 at 2:54 PM, Rafael Weingartner < > >> rafaelweingart...@gmail.com> wrote: > >> > >> > Hi all, > >> > > >> > I am mailing this to the dev and users list, since I am not sure which > >> one > >> > would be the best to make such question. > >> > > >> > > >> > So, I deployed Zenoss to monitor my Cloud, and I noticed something > weird > >> > on a graph that it was generating about the Cloud's memory. The graph > >> was > >> > showing total memory as 26GB, allocated as 16GB and used as 19MB. > >> > > >> > It was not making sense, so I was looking around and I noticed that > this > >> > 19MB is the value that the Cloudstack presents as the memory used on > >> > infrastructure>Hosts. > >> > > >> > > >> > I think that this problem is related to this ticket opened last year. > >> > > >> > https://issues.apache.org/jira/browse/CLOUDSTACK-3048 > >> > Sadly, it seems that no one has taken a look at it. > >> > > >> > > >> > Does anyone know anything about this problem/bug? > >> > > >> > > >> > -- > >> > Rafael Weingärtner > >> > > >> > >> > >> > >> -- > >> Rafael Weingärtner > >> > > > > > > > -- Rafael Weingärtner
