Virtual Machine manager is too slow

[Simon95]

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

[MISHA-DOM]

It is difficult to say unequivocally about performance here. But any gap between the OS and the hardware will always lead to brakes. If you want excellent performance, then the server must be installed directly on hardware, without any NAS

[DSfuchs]

One reason could be that only one RAM module is being used, the clock frequency would then only be 1x 1333MHz. Is it also dual-rank memory? Also only use two virtual CPUs.

 

Have you checked on the command line what clock frequency your CPU is running at exactly?

 

Are all the settings in the BIOS correctly optimized?

 

With such minimalistic equipment, the VMM interface should also be closed during normal operation. This alone requires a lot of resources.

Edited May 31, 2024 by DSfuchs

[DSfuchs]

For such a project, it should be a J4205 CPU with 2x 1866MHz DDR3 or better CPU with 2x DDR4.

 

Since with Xpenology on Intel CPUs the coordination between OS, BIOS and hardware is very important, the choice of loader alone can be the main problem. I have also written an article about this.

For optimal performance, I had to virtualize on a special configuration via VirtualBox on Windows 10. Xpenology and a Windows VM then run very well on it.

Edited May 31, 2024 by DSfuchs

[DSfuchs]

On 1/30/2022 at 11:32 AM, 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

A CPU i7-4790k is completely unsuitable for a NAS, as it consumes at least 9x as much power as necessary.