Virtual Machine instance on Xpenology too slow


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Goodmorning everyone.
I am making an Xpenology device with this features:
- Jun's Loader v1.03b loader DS3617xs
- DSM version 6.2
- Motherboard: AsRock Q1900M
- Processor: Intel Quad-Core J1900 (2 GHz)
- RAM: 8Gb
- Hard Disc: 2X SeaGate IronWolf 4Tb (each)

I have an old PC based on intel core 2 duo and 4gb of ram with Windows 10 running a management software. I created an image of this PC and poured it into an instance of Synology Virtual Machine Manager with this specs attributed:
- 4 CPUs
- 4Gb RAM

- 100Gb Space
To my surprise, I found that the operation was successful and the system transferred to Vm works perfectly and the clients pc connect to the management system without problems. The only problem I noticed is that the management software is much slower. Example: From a client PC, to open the supplier list, the time taken before (old "server" pc) was about 0.5s, now it takes 1.5s. It is not a disproportionate time, but the difference is felt and it is annoying.
What is the cause of this problem? Virtual Machine Manager Limit? Disc speed limit? (the new ironwolf and the WD red on the old "server" pc are all at 5.400rpm, so I don't think that's that)
CPU J1900 limit too low? (as I believe it is)
If I replace the motherboard and CPU with something more performing (GIGABYTE GA-H81M-DS2 + Core i7-4790K for example), could the performance of the virtualized instance increase?
Thanks a lot to everyone for your advice

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On 1/29/2022 at 1:07 PM, Simon95 said:

Goodmorning everyone.
I am making an Xpenology device with this features:
- Jun's Loader v1.03b loader DS3617xs
- DSM version 6.2
- Motherboard: AsRock Q1900M
- Processor: Intel Quad-Core J1900 (2 GHz)
- RAM: 8Gb
- Hard Disc: 2X SeaGate IronWolf 4Tb (each)

I have an old PC based on intel core 2 duo and 4gb of ram with Windows 10 running a management software. I created an image of this PC and poured it into an instance of Synology Virtual Machine Manager with this specs attributed:
- 4 CPUs
- 4Gb RAM

- 100Gb Space
To my surprise, I found that the operation was successful and the system transferred to Vm works perfectly and the clients pc connect to the management system without problems. The only problem I noticed is that the management software is much slower. Example: From a client PC, to open the supplier list, the time taken before (old "server" pc) was about 0.5s, now it takes 1.5s. It is not a disproportionate time, but the difference is felt and it is annoying.
What is the cause of this problem? Virtual Machine Manager Limit? Disc speed limit? (the new ironwolf and the WD red on the old "server" pc are all at 5.400rpm, so I don't think that's that)
CPU J1900 limit too low? (as I believe it is)
If I replace the motherboard and CPU with something more performing (GIGABYTE GA-H81M-DS2 + Core i7-4790K for example), could the performance of the virtualized instance increase?
Thanks a lot to everyone for your advice

What i'd advise is drop a core from the VM, as you have 4 physical cores, you've assigned all those to your VM which will be contending with Xpenology potentially so drop it to 2 or 3 cores as a test.  Also remember that the J1900 isn't exactly a powerhouse, i'd keep an eye on utilisation and disk activity when your running your test.

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1 hour ago, chickey said:

What i'd advise is drop a core from the VM, as you have 4 physical cores, you've assigned all those to your VM which will be contending with Xpenology potentially so drop it to 2 or 3 cores as a test.  Also remember that the J1900 isn't exactly a powerhouse, i'd keep an eye on utilisation and disk activity when your running your test.

 

17 minutes ago, Dfds said:

As @chickeysaid assigning assigning all your CPU cores to the vm isn’t a good idea, I’d also think about running the vm from an sad.

Thanks for your answer. Initially I set it to 2 cores, but seeing the poor performance I set it to 4 cores, without noticing any benefits. From the windows task manager of the Vm I notice that the CPU is always at 100% and the maximum value is 2Ghz. It is standing there

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