Microsoft Dynamics AX (Archived)

Improve VM performance

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Posted on by Community Member

Hi Experts,

I have a VM with below configurations:

Single Server Environment.

RAM- 32GB

HDD- 150GB

Concurrent users- 15

AOS- Single

Basically the problem here is when all the users are logged in and try to hit the DB(ie creating a new table,EDT or so) then the AX Client gets very slow and hangs otherwise the VM performance is good.

I have tried increasing the SQL Server max memory and it works for some time and then the issue comes again.

Does installing multiple instances of AOS will help?

Any suggestions on how to improve the performance???

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Martin Dráb 237,904 Most Valuable Professional on at

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Does it mean that you have everything (DB, AOS, 15 AX clients) on the same VM? That's definitely not a wise setup and it's not supported for production use.

I wouldn't strongly recommend moving SQL Server to a dedicated box and configuring it according to best practices (transaction log on its own disk etc.).

Then you have to measure what's slow. For example, if your database files lie on a very slow disk, adding more RAM can't solve it.

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Community Member on at

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Martin,

Thank you for the inputs.

First of all it is not a production env, just a training env which should be up for a few days.

Yes, All the DB, AOS and the client in the same VM.

We cannot do much of moving the components into other VM's.

Any more suggestions?

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André Arnaud de Cal... 301,037 Super User 2025 Season 2 on at

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Like Martin said, you need to monitor the system to see the bottlenecks. Also for a training environment I would not have 15 users on this machine. Installing a second AOS on the same machine also has no use. It is only consuming additional resources.

By the way: what type of virtualization technology are you using?

Is the training about development? Then for sure I would provide a VM per attendee.

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Chino 130 on at

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If you have a single machine installation it will not get any faster I am afraid. Unless you scale up your hardware you might get a performance boost but its not an efficient upgrade

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Community Member on at

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Thanks Arnaud.

I would also definetely assign a VM per attendee. But here it is just a BootCamp training and we do not have so many VM's up and running.

Also there is not much of Dev work it is just showing them how to create and use the stuff from AOT.

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Umesh Pandit 9,315 User Group Leader on at

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try to increase CPU count and give a try.

also check these posts:

blogs.msdn.com/.../top-10-issues-raised-by-infrastructure-design-review.aspx

blogs.msdn.com/.../microsoft-dynamics-ax-2012-benchmarks-hyper-v-ep-and-high-volume-inventory.aspx

axninja.blogspot.in/.../help-dynamics-ax-is-slow.html

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dekaasboer 1,530 on at

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I regurary set up test and dev enviroments on a single machine. I have some crude guidelines for these crude enviroments.

Set all DB's to simple recovery mode to reduce logging.

Balance your ram. SQL will consume everything if left unchecked but you need to give the AOS and clients enough room to build their own caches. In you case I would capp SQL on 10-12 gb. If you have SSRS and SSAS running as well you will need to capp these too.

Turn off preview panes and fact boxes in AX.

Minimise database logging.

Spread your IO as much as possible. The AOS caches some tables on disk. The clients have caches in their local profile. Your tempdb, LOG and AX DB's all generate reads and writes.

Set up your virus scanner to exclude DB's, log files, AX Client and AOS chaches and the generated CIL files.

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Guy Terry 28,924 Moderator on at

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The biggest single performance boost I have found when running all AX components on one VM comes from putting the VHDs on an SSD drive.

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Community Member on at

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Hey Rik,

This looks pretty Good.

Let me try it and will share the results soon..

Thanks....

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UhimU 5 on at

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A list of 20 tweaks which can be used to optimize and improve VM performance in a Hyper-V environment:

Enable Hyper-V Integration Services
Use fixed VHD files
Don’t use Hyper-V snapshots as a Hyper-V backup alternative
Configure the size of paging files
Do not create too many virtual network switches
Avoid overloading the management OS
Close unnecessary applications
Install Hyper-V on Windows Server Core
Determine a performance baseline
Allocate resources effectively
Enable Multipath I/O
Use the Dynamic Memory Feature
Enable VLAN tagging
Defragment virtual hard disks
Ensure that your hardware is certified
Use RAID 10 volumes
Deploy 64-bit guest OSs and Generation 2 VMs
Properly configure your anti-virus
Organize busy VMs into separate volumes
Automate tasks with PowerShell cmdlets

More here: https://www.nakivo.com/blog/top-20-tips-improve-vm-performance-hyper-v

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