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.
Tags: VMware
Similar Questions
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Hello
We'll be the citrix server virtualization. I had read a lot of articles & they say all "disable the balloon pilot during installation vmtools" during the installation of girl I can't find something to do with a balloon pilot. I found something else that says that you must disable this through the VI client & gt; guest operating system etc, but it is for the host.
is it possible to do this thinking the VM tools so that it only disables the balloon on the VM?
Thank you
Strongly, I agree with the above two posts and do not recommend disabling the balloon on any virtual machine pilot! But if you are here is the procedure to do so.
:
Connect directly to the ESX Server host computer where the virtual machine resides on, using Virtual Infrastructure Client (VI Client).
-Stop the virtual machine.
-Right-click on the virtual machine on the inventory Panel, then click on change settings.
-Click on the Options tab, and then select general.
-Click on the Configuration settings.
-Click Add a line, and then add the sched.mem.maxmemctl setting in the text box.
-Click on the line next to it and add a 0 in the text box.
-Click OK to save the changes.
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Question about the balloon pilot
Hello
I have a question about the balloon pilot in ESX/ESXi 4.x. When the pilot is "inflated" the reason is to reveal to the ESX host memory of comments in fact is not used and that memory could be recovered by the host. However, the driver must be loaded all the time for this memory to be used by the host, as in giving him another VM?
Or is it just inflate and deflate so and there is no need to stay charged?
Once that memory has been retrieved the pilot deflates on its own.
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Balloon pilot underway to run with a lot of available memory - looking for answers as to why.
I have a couple of ESX servers that are running Active balloon pilot, but there seems to be a lot of available memory to support current workloads. VC watching one of these ESX servers in the Summary tab memory use displays 14,08 GB of memory used out of 32 GB. When we look at ESXTOP = MEMCTL (Mo): 437 curr, target 437, max 10649. It seems that the balloon pilot has reached its target and I expect that he finish and stop the execution. NO VM have limits configuration for their use of resources, is not using pools of resources. I'm just curious as to why these servers are showing a ball activity while the other ESX servers with much more demanding workloads are not... Thank you
What vesrion ESX? 3.5 has a reported bug.
Have you seen verified that the "unlimited" tab to the memory resource is checked for the customers in question?
AWo
VCP / VMware vEXPERT 2009= Due to a lack of employees, human beings humans are working here. -Treat it with care, they are rare. =
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Help understanding balloon pilot
Hello
Trying to wrap your head around the Vmware balloon pilot. I think I understand, but hoping someone here can confirm or put me in the right direction. We had a problem of performance recently, which turned out be a storage problem, but the use of memory on our guests have caught my attention.
We have a cluster with eight (8) ESXi 4.0 U2 guest - dual Xeon 6 core procs with 72 GB of memory each. 32 Win 2 k 3 customers spread evenly between hosts (4) each configured to use 20GB memory, but on average only use 15-17GB. No reserve on the set of CPU or memory. Standards equal overall of all guests. Use of memory on the host computers are consistenly below the physical memory on the server.
Once turned on the consistenly guests have 15-17 GB of memory that are assigned, even if on operating times more low Windows reports only by using 2.5 GB of memory. During periods of use lowest Vmware brings about active memory 1 GB, but 15-17 GB is always attributed to each guest.
Now, my understanding of the pilot balloon is that until there are conflicts of resources, it calls, which is why we are seeing only the 15-17 GB of memory always allocated for the guests and it never goes down - because we never run out of physical resources. If I run performace reports/charts, the ball of memory always show 0 on all the guests.
I understand the balloon pilot? Given the configuration, are allocations of memory of guests act properly. And could / should I think of other ways to optimize performance in the environment?
Thanks in advance.
-Adam
I think you have a good understanding of the use of scenarios for the balloon pilot. For me, your environment seems to be installed, at least from a perspective of resources VM, much like ours. We didn't put no limit and not to use any resources, other than the DRS pools.
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What is balloon pilot how it will work
An important: If you don't not install them the VMware Tools, the vmmemctl driver (ball) will not be installed and balloon would not be possible. ESXi has 4 memory management techniques:
(1) transparent page sharing: eliminates redundant copies of pages of memory, subtracting them to memory and create a reference instead.
2) memory ballooning: in times of conflict, the balloon pilot (comes with VMware Tools) will ask the OS invited for unused memory and returns it back to vSphere
(3) compression of memory: after the balloon runs out, try to compress the memory (essentially gzipping it).
(4) the disk swap / cache host: Swap memory on a disk any.So, without the ball the VMware tools (vmmemctl) driver is installed, we will have 3 memory management techniques. It ignores the montgolfière and goes directly to the compression.
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Hi team,
I ask that you forgive for asking a silly question without doing a free search.
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Concerning
Sriapti
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< re-titled by host >
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