Virtual machine memory usage vmware ошибка
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mattyww
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I need assistance with the following 'Virtual machine memory usage' alert, although that server is doing anything intensive. I've posted some screenshots below to show you what is happening.
As you can see the server isn't doing much at all although vSphere is reporting that the Virtual Machine Memory is maxed out.
Any idea on how to fix the above?
mattyww
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After rebooting twice the Active Memory was still high but then I shut it down and added 2GB to total RAM 20GB.
It has fixed itself and is back down.
Thanks for your help!
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is a Microsoft virtual machine?
can you insert an image of the task manager on what is consuming memory in the vm?
mattyww
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Thanks for your reply!
Yes, it is a Windows Server virtual machine
I've sorted by Memory for reference below
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What version do you have of Esxi and build?
nachogonzalez
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Hey mattyww hope you are doing fine
"Consumed Host Memory usage is defined as the amount of host memory that is allocated to the virtual machine, Active Guest Memory is defined as the amount of guest memory that is currently being used by the guest operating system and its applications."
You shouldn't worry about VM consumed, since it's the physical memory that is assigned to the VM. I would worry for the Active Guest Memory
Let me ask you a few questions:
Which Windows version is this?
Do you have VMware tools installed?
Have you checked memory usage on advanced performance charts / real - time?
(Monitor--> Peformance --> Advanced --> chart options --> Memory --> and then select Consumed host memory and Active Guest memory)
Предупреждения о ОЗУ и CPU
Данные предупреждения и алерты, вы можете обнаружить как в vCenter server, так и на отдельном хосте ESXI. Выглядят эти алерты вот так:
Оба этих предупреждений на самом деле очень критичные, так как сообщают, что ваш ESXI хост использует всю или практически всю оперативную память или процессор, хорошо если это небольшая пиковая нагрузка, но если такая ситуация постоянная, есть повод серьезно задуматься над выделенными ресурсами (я уже высказывал свои мысли по этому поводу)
Если вы перейдет на вкладку "Summary", то в пункте "Resources" увидите шкалу загрузки по процессору
и оперативной памяти.
Пути решения данной ситуации такие:
- Вы ограничиваете потребление ресурсов для прожорливой виртуальной машины
- Либо более правильно перераспределяете их и дорабатываете план планирования, это дольше, но лучше, так как будет возможность предусмотреть будущий рост
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I'm running ESXi 5 and vCenter 5. I have a Windows XP Pro 32-bit VM which is only used to run a small web-based application. Every night I get a bunch of VmMemoryUsageAlarm emails from vCenter for this VM (green to yellow to red, back down, back up, then back down again). However, when I look in Task Manager, I have 2gb RAM assigned to the system but peak usage is only around 700mb (see attached image).
How do I go about troubleshooting this so that I stop getting the memory usage alarm from this VM? My symptoms match exactly the issue reported in this VMware KB Article (including the Nehalem CPUs) except that I'm running ESXi 5 so the patch solution doesn't apply to my case.
BrentMHK
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Jay6111
For XP, I would go here,
That is the Perfmon wizard by Microsoft. Walk through the wizard and choose the advanced, then choose memory for the counter, and run it when you need it and you should be good to go to get historical data on the memory usage.
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Что плохого несут в себе эти предупреждения
- Ваш сервер быстрее изнашивается, так как при правильно планировании, он не должен использовать более 90 процентов ресурсов.
- Идет борьба за ресурсы между виртуальными машинами, в следствии чего уменьшается их производительность.
- Может привести к зависанию хоста или виртуальной машины
Советую к этим моментам отнестись более детально, от себя могу порекомендовать хорошую статью, про использовании памяти виртуальными машинами VMware vSphere и не доводите до такого.
How are you doing? thanks for the Kind assist. I have a warning error that wont go away on our Vsphere web client about the Virtual machine host memory usage. Please does anybody has a clue as to what the warning could be? My take on it is either something is spiking the memory or I might need to add more Physical memory to the host. I´m just tried of acknowledging the warning and then it shows up again,any tip is appreciated.
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Your subject says virtual machine CPU, your body says memory, but the issue is your host is at a limit.
You have allocated out almost all of the physical ram to guests, this is normal as you add VMs
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If you have 10 VMs each with 16GB ram, that is 160GB physical ram, you are close to your 200GB limit, that is all it is telling you, the only way to get rid of this is reduce how much you allocate to guests, stop adding new guests or add more memory, this is not a fault, you have simply allocated the physical memory out to guests.
Alex3031
I don't from the image you show it indicates you have 20GB of free RAM on the host, I would speculate it's just an alert to let you know that less than x% of your RAM on the host is free, something you might need to look into in some cases.
Jim Peters
I recommend reading these VMWare documents to understand more about CPU and Memory plus possibly whether what you are doing needs to be adjusted.
Frostyck
You should download more RAM
Thanks Alot Rod T. corrected. I appreciate ur answer thats what I also thought.
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Before adding more memory, take a look at your guests ram usage, you can likely reduce some.
Install Veeam ONE Free Edition for. and monitor your host and guests, it will tell you what can be reduced
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Dell Server Eating Power Supplies
I have a Dell PowerEdge 750 that's been quietly running our old accounting software to network users for at least 15 years. The server began powering off intermittently, so I picked up a refurbished power supply as a replacement. It ran for 3 days and fai.
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To my fellow left-handers, Happy Friday the 13th. While the right-handed majority quakes in fear and wallows in superstition, a malady known as friggatriskaidekaphobia, we celebrate the day that promises health, wea.
Just installed new ESX host and set up memory on 4 VMs.
The VMs are not using much memory but keep getting alarm for host memory usage 95%.
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eric-ptek
Did you assign 95 percent of the ram to the VM's?
Meaning regardless of what they are using the VM's are assigned 95 percent of the total HOST ram, the actual server ram.
Not that you can but lets say you had 4 VM's and 5GB of ram.
Easy VM had 1.1875GB of ram assigned, thats 4.75GB of ram, or 95 percent. Each VM might only be using 1/2 that amount actively but its assigned amount in total is 95 percent.
It maybe is not how much they are using but how much you have assigned them.
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5 Replies
eric-ptek
Did you assign 95 percent of the ram to the VM's?
Meaning regardless of what they are using the VM's are assigned 95 percent of the total HOST ram, the actual server ram.
Not that you can but lets say you had 4 VM's and 5GB of ram.
Easy VM had 1.1875GB of ram assigned, thats 4.75GB of ram, or 95 percent. Each VM might only be using 1/2 that amount actively but its assigned amount in total is 95 percent.
It maybe is not how much they are using but how much you have assigned them.
MarkT94
Might need to add more bacon. er, RAM to the host. Hard to go wrong with too much RAM.
You can configure the alert settings manually.
Go into alert-> definition, search for the alert by name.
On one server I changed once because usage was planned and permanently above 90%.
Nevertheless I happened that the server started balooning.
Not the guests required more but the host itself (eg during backup).
Since then the server has more RAM :-)
In your circumstances can be a good idea to check performance graph for used swap and balooning. Especially balooning should be zero.
I made sure on my hosts that I left at least 10% RAM for the host server. Sound like you have assigned over 95% to VMs
John White
Host RAM alert. Not guests. Host. That means you've assigned memory to the point that you're under the alarm setting that IKA8662 mentioned.
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Jay6111
Is that server 2008?
OP BrentMHK
No this is a Windows XP Pro VM.
Jay6111
For XP, I would go here,
That is the Perfmon wizard by Microsoft. Walk through the wizard and choose the advanced, then choose memory for the counter, and run it when you need it and you should be good to go to get historical data on the memory usage.
OP BrentMHK
I'll let this run and see what it shows but since Task Manager doesn't show memory usage exceeding 715MB since the last reboot 5 days ago I won't hold my breath.
Jay6111
Did you check the "Alarms" in Vsphere for that particular machine (in the alarms page top left click "Definitions") to make sure some odd ball low setting isn't set by default or anything like that?
OP BrentMHK
Did you check the "Alarms" in Vsphere for that particular machine (in the alarms page top left click "Definitions") to make sure some odd ball low setting isn't set by default or anything like that?
-Jay
All of my alarms are defined at the vCenter level. Also, the alert emails state that yellow is 85% and red is 95%.
Jay6111
I did find this but it's for version 4.
Not that it doesn't mean it couldn't come back
OP BrentMHK
That's the same KB article I referenced in my original post. :)
Jay6111
Hey. it would help if I clicked links in OP. lmao.
John White
Sounds like the same problem to me. Are you on support? Can you report it?
StorageNinja
Does the web server in question run Tomcat or any Java code?
Java does its own memory management/virtualization so it really messes with VMware's ability to track active memory (thus false alarms).
OP BrentMHK
OK, looking at the perfmon wizard logs, "Pages/sec" and "Pages Input/sec" start going crazy during the time window I'm receiving the emails, which also correlates to right after my backups complete. The funny thing is, I only backup this particular VM on Fridays yet I receive the alerts every night so it must be something on the ESXi host causing the issue.
Thanks for the suggestion, Jay6111.
@John773 - The server runs Java and SQL 2005 Express. However, the issue only occurs at night, when no one is accessing the server (the server is internal only and has no internet access). There aren't any SQL backups defined nor are there any tasks listed in Scheduled Tasks.
Unison
For anyone finding this post due to the same issues.
I currently have a case that is running with VMware - have been working with them over the past few weeks on this.
It seems as though this may just be an issue with the way vmware is reporting on the resource usage - there is not actually any real resource issue with your guest or host.
We have been able to improve the accuracy of the vmware memory reporting by setting the MAXMEM switch of the guest in the boot.ini file to the default value (usually half the total guest memory - PM me or reply here if you want more detail on how to do this) - when we do this and reboot the server, vmware more accurately reflects what the true guest memory usage is - specially during high work loads - some of you might want to try setting this switch - but setting this switch will not be the final solution. VMWare have confirmed that when this switch is in place, it changes the way in which vmware reports on resource use and hence prevents the worry and false alerts from vcentre.
vmware had a similar issue like this with older versions of esxi as in the link from the OP - so they may need to develop a patch for this similar problem in the current version of esxi.
Just thought i would post this now - even though its not resolve yet - but i will post the results of the final investigation on this with vmware.
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The SOC Briefing for May 13th - We are back!
Good morning and welcome to today's briefing. I am starting this back, usually will try to post mostly Fridays on this as much as I can. As usually this post bring various posts regarding Patches & Updates plus Security News and a bonus Security Tip! Hope.
IE11 retires in 1 month on June 15, 2022
Received this reminder email from MS this morning. I won't be sad to finally see this go, even though I know I have a few hold outs who insist on clicking on that E still (mostly out of habit)Is everyone Ready for the big day?-----------------------------.
Snap! Cybersecurity & the boardroom, Cooper, Starlink sat internet, & Sgr A*
Your daily dose of tech news, in brief. Not only is it Friday, but it is also Friday the 13th! A day that has inspired a late 19th-century secret society, an early 20th-century novel, a horror film franchise, and triskaidekaphobia, a word I had to.
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