Balloon flight

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• Balloon flight, even if there is plenty of RAM

  Hi all

  Help me understand this.  Why did this machine virtual balloon when there is plenty of available RAM?  And why is it always servers database that has the highest consumed host memory even if active memory is only like 20%?  The balloon pilot is on, and when I turn it off then swap back.  Not quite sure what is happening.  The VMTOOLs are up-to-date, I even uninstalled and reinstalled.  I tried setting the limits and reserves, but it never changed.  Any ideas?  Thanks in advance.

  It's the only VM on a host that has 42GBs of RAM. There is a reserve and a deadline to 16GBs

  Looks like the VM has 24GO configured, but 16 GB limit. Up to 24-16 = 8 GB inflated. That's all.

  ---

  MCITP: SA + WILL, VMware vExpert, VCP 3/4

  http://blog.vadmin.ru

• The guest with the balloon pilot can inflate itself?

  The guest with the balloon pilot can inflate itself?

  as the topic.

  Yes, everything you said is true. With technical virtualization inplace, we always try to approve it at 1.5 x or 2 x take an example that will make this much clearer scenario.

  As you have a host with 8 GB of memory and you have turned on on four virtual machines each with 4 GB which is overcommitment of X 2. To achieve this level of overcommitment VMkernel uses now several technique of reclaimation of Page like:

  Page sharing

  Balloon flight

  Compression

  and Exchange.

  There may be a case when high memory pressure is VM1 and VM2 is lightly loaded, in this case balloon pilot will inflate in VM2 and pass the memory address to VMkernel which in turn pass these addresses at VM1. Don't forget THAT VM is completely uinaware in all these transition. Once the need has been filled the balloon VM2 pilot deflate and recover his memory.

  Please note that the balloon pilot is nothing but a program that uses the system call named Malloc() to reserve memory.

• Why is this hot air balloon VM?

  Our cluster only this vm is hot air balloon? There is no overcommiting memory on the host where is the virtual machine is running, the virtual machine has no limits of distribution of resources. Someone at - it a suggestion?

  With respect,

  Wouter

  

  

  Hello

  the reason why VM a balloon flight is 'idle memory tax '.

  I think that you will find many good explanations in Google on this subject.

  Kind regards

  Andi

• vSphere 5.5 HA percentage based Admission Control Policy

  I wanted to light for some time, and it is better described by a scenario.

  1. I have a 2 host cluster, to make it easy, each host is configured with 32 GB of physical memory

  2. the cluster is configured with Admission Control activated, and the policy is set to percentage of the cluster resources CPU 50% / 50% memory with the idea of reserving half of the ability to support a 1 server failure.

  3. for the sake of argument, let's say there are 10 servers in the cluster, NONE of these servers are using any type of booking for CPU / MEM.

  4. each of these 10 servers is configured for 6 GB memory (6 GB x 10 VM = 60 GB memory affected). For the sake of the argument lets say DRS distributes 5 virtual machines per host, 30 GB per host.

  5. now, in my opinion, Cluster, each of my guests show a % 93% memory used, I have alarms jump in vCenter shouting that memory is low.

  6. Since none of these virtual machines run reservations (cut the CPU and memory) switch on the percentage of capacity. Those numbers are hardly showing a tooth due to default reserves applied, (what happens as 32 Mhz?) Readings for the current ability to failover cluster CPU and memory switch are 98% CPU, memory of 99%. Well above the 50% necessary for CAC to kick in and say STOP FEEDING ON VMs!

  Now that I put on the Foundation, we have allocated 60 on the 64 GB of physical memory to virtual machines and vSphere alarms are declaring 'hey you're Out of memory', however, by using a product such as VeeamOne, he pointed out that each of these 10 VMs are really using only 2 GB memory physical host the 6 GB allocated. If "technically", we are only using 20 GB (10 GB/host) of 64 GB of memory available to the cluster host physical.

  The million dollar question is... if I'm not one of the hosts, all THE virtual machines will come online on the last surviving node?

  Scenario 1:

  Host 1 32 GB of physical memory, 5 VMs, 30 GB of allocated memory, alarms to use 93%

  Host alarms 2 32 GB of physical memory, 5, VMs, 30 GB memory allocated, 93% of use

  1 host fails, HA intervenes, it goes to the State, it cannot power on virtual machines more because it is only 2 remaining GB and I need power over 30 GB of value? (I expect that this is not the case, we should be able to provision...)

  Scenario 2:

  1 32 GB of physical memory to the host, 5 VMs, 30 GB of memory allocated, physical 10 GB used by Veam reported, physical of 20 GB remaining

  The host of 2 32 GB of physical memory, 5, VMs, 30 GB of memory allocated, physical 10 GB used by Veeam one reports, physical of 20 GB remaining

  Welcome 1 fails, HA comes into play, it starts every 5 VMs on host 2 because it has 20 GB remaining physical and needs only 10 GB?

  It seems that there should be a better way to really tell if you can fully support 1 node failure model % with the memory allocated in your cluster-based, anyone can demystify it for me and explain?

  There are several measures that serve to plan capacity. For the record, good or bad, I look at demand and active memory. Also, if I see the balloon flight or in Exchange, I feel its time to add a host (or just memory... it all depends on several other measures). DRS is starting to complain when the hosts are stressed. Right resize VMs from the beginning makes it easier trend and plan additional abilities. There should be no need more allocate as much.

  I also use VROPS in my environment. This is very useful for trends and plan ahead.

• Limit the permissions within a Linux VM vmtools

  According to the security requirements for a project, that I'm working on, asked to disable the vmtools permissions to launch programs and scripts. Is there a way to limit that and let the vmtools only with basic functions such as memory, balloon flight, for example?

  I searched around, but haven't found a solution.

  Thank you

  This feature is part of the VIX API and this can be disabled. For more details see the 5.0 vSphere Hardening Guide http://www.vmware.com/support/support-resources/hardening-guides.html and look for the 'disable-vix-messages' and I don't know that resource will help you also more lock your vSphere environment according to your needs.

  Here are some additional resources:

  http://www.virtuallyghetto.blogspot.com/2012/04/vSphere-security-hardening-report.html

  http://blogs.VMware.com/vSphere/2012/06/automate-the-hardening-of-your-virtual-machine-VMX-configurations.html

  http://blogs.VMware.com/vSphere/2012/07/automatically-securing-virtual-machines-using-a-vCenter-alarm.html

  http://blogs.VMware.com/vSphere/2012/07/automatically-securing-virtual-machines-using-vCenter-Orchestrator.html

• resource consuming doubt

  Hello

  join I put the screenshot of a virtual machine resource consuming, my environment...

  I created the virtual machine with 16 GB of RAM, and I limited to 8 GB of RAM and also book at Lea 2 GB RAM... My doubt is on consumption of balooning...

  I thought about this situation, the virtual machine will be limited to 8 GB of Ram and is... but by the screenshot I'm seeing that the VM still use the 16 GB where 8 GB relays on the physical memory and another 8 GB relays on file virtal memory... Slowing down the VM...

  Can someone explain if this is expected or not? and why?

  Is a kind of way to hot-air balloon do not?

  > May someone explain whether this is expected or not? and why?

  Yes, its expected with this configuration.

  Limit mean, the maxium memory material amount will be given to the VM at any time by ESX. In your case, maximum 8 GB of memory will be available VM material rest RAM memory THAT VM has to manage by using virtual memory (swap or hot-air balloon flight). As the allocation memory for the virtual machine is 16 GB.

  > Is a kind of way to hot-air balloon do not?

  If you want VM should do not too much hot air balloon whose performance impact. Please configure the VM VM allowance limit. Configure the limit VM to 16 GB as being equal to the allocation of VM or decrease the allocation of VM 16 GB to 8 GB.

  Please see below pdf for a better understanding of resource management concepts.

  http://www.VMware.com/PDF/vSphere4/R41/vsp_41_resource_mgmt.PDF

  -Dev

• Compression memory question

  Hello

  I wonder how the new feature of vSphere 4.1 "memory compression.

  I understand that this is the third (after 'the transparent memory page sharing' and 'hot air balloon') option when on memory allocation.

  Balloon flight memory can take 0-75% (65% by default) of a unreserverd of VMs memory which means this memory compression will give out the rest of the VMs without reserve (default 35%) memory.

  How the ESXi/ESX Server determine what memory and the amount of memory it can compress before using the last resort, exchange the disk?

  Compressed memory is put in the area of maximum compression cache, but where is this located cache size, it is a part of the area of memory used by VMkernel to manage the virtual computer?

  Thank you

  Magnus Andersson

  You forgot an official http://www.vmware.com/files/pdf/techpaper/vsp_41_perf_memory_mgmt.pdf

• Is there a default resource pool?

  All - I read the white paper on esxtop that was written by Scott Drummond and can be found here - & gt; http://communities.VMware.com/docs/doc-9279 In this one, page 9, under the definition of 'State', he said:

  While the state memory of the host is not used to determine if the memory should be retrieved from virtual machines (which
  decision is made at the level of the resource pool), it may affect what mechanisms are used to retrieve the memory if necessary.
  In the States high and soft, ballooning is favored over permutation. In States hard and low, swapping is favored by report
  balloon flight

  So my question is, what happens if I do not defined resource pools?  Is there a default pool?  If not, are there any rehabilitation of the memory available for my guests/guests?

  "Every independent host and each DRS cluster has a pool of resources of root (invisible) which brings together the resources of the host or a cluster. The resource pool root does not appear because the resources of the host (or cluster) and the root resource pool are always the same. "- extract from http://pubs.vmware.com/vi35u2/resmgmt/wwhelp/wwhimpl/common/html/wwhelp.htm?context=resmgmt&file=vc_resource_pools.5.2.html

• MS Flight full nose-down trim. Unable to take off

  so... I gave MS Flight Test... I managed the balloons flew and landed...

  Then I wanted to take the Lady for her party... Aircraft fly... I show 100% stitched trim.

  Obviously one of my many controls that I use with (SIMULATORS REAL and no GAMES, as the flight seems to be) FSX and X-Plane is interfering with the flight, but I have that option for my first 5 controls that do not understand my sector.

  I can't find where to change the configuration in a cfg file as in FSX

  Hello

  The question you posted corresponds to flight simulation games and would be better suited to the Microsoft Games Department. Please visit the link below to find a community that will provide the best support.

  Post in Games for Windows - Live Forums

  http://forums.Xbox.com/GFW/default.aspx
   
  I hope this helps.

• How to prevent appreaing balloons when I sent a text message

  iPhone 5

  OS last updated 2 days ago

  I sent SMS to several friends. On 2 of these balloons have appeared. Which could be allowed on a warm message, but if a person is sick then the balloons are not appropriate.

  I don't know how to stop the balloons when not wanted.

  Hi jdkyle,

  Go to settings > general > accessibility > reduce the Motion and turn this setting on. This disables the animations on the device.

  See you soon!

• iPad IOS 9.3.4 (with GPS) air 2: using Skydemon (used for the flight) gives "Waiting for location data", as the error

  I use my iPad 2 a air application during the flight of an aircraft (Skydemon) for flight and my flight plan.

  Most of the time it works fine. Yesterday, I received an error "pending for location data. seems dat that GPS does not work correctly. I've recently implemented in the latest IOS update.

  Don't know

• Deactivation of mobile data in flight mode.

  Hello.

  I have an iPhone with iOS 9.3.1 6 and I try to turn off mobile data when the phone is in flight mode or with the SIM card removed. No idea how to do it?

  Kind regards

  There is nothing to turn off.  If the device is in airplane mode, all the radio are switched off voltage, therefore no data or voice at all connections.  Similarly, if you remove the SIM card, it cannot be any cellular connection at all, so nothing to turn off in what concerns cellular data (or voice).  With the SIM card, wifi could still be used if there is a network in range.  But with wifi off and the SIM card on, once again, there is no possible connection data of any kind.

• Will the 'flights climbed' work and calculate the altitude of an aircraft?

  I'm going on vacation soon and everything I just want to know my iPhone 6s will calculate the flights climbed when the plane is in the Air?

  You will be on a plane with steps?

• I accidentally bought an airport in infinity Flight simulator. And he says that this purchase is not eligible for a refund. I rebooted my machine. Help, please.

  I need a refund for an airport, I bought the infinite Flight Simulator and I didn't. I want a refund please. Help please.

  Purchases are considered final, but you can try the page 'report a problem' to contact iTunes Support and see if they will refund or credit you: http://reportaproblem.apple.com

  Or you can try to contact iTunes support via this page: http://www.apple.com/support/itunes/contact/ or https://www.apple.com/emea/support/itunes/contact.html