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Hostilian

Virtual Machine manager - very slow transfers

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Anyone else have issues with crazy slow file transfers for VMs in VMM?

 

DS918 j3455-itx w 12GB Ram.. Latest DSM.

Single VM on SSD.. Copying files from VM to a remote NAS (that normally saturates a GBit link) gets 4-5MB/sec without Syno VM tools and about 9MB/sec with tools installed..

 

So slow I'm thinking of forgetting about Virtual Machines on my NAS..

 

Anyone seen this?

Edited by Hostilian

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Thanks..

Is your Virtual Machine stored in VMM on the Synology NAS?

 

edit.. Just tried changing the NIC type on the VM from e1000 to Virtio and there was an immediate improvement.. 70-80MB/sec.
Still not as good as ithis VM used to be (when on VMWare Workstation) but a lot better than 10MB/sec..

Is Virtio the best NIC type to try?

Edited by Hostilian

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43 минуты назад, Hostilian сказал:

Is your Virtual Machine stored in VMM on the Synology NAS?

Yes and the VMM storage is on HDD.

45 минут назад, Hostilian сказал:

Is Virtio the best NIC type to try?

I haven't tested other types.

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All fine..

Transfers to the file shares on the NAS (that VMM sits on) are 110 MB/sec
Transfers to the other NAS (where I am copying files to from the VM) are fine if copying from anywhere other than the VM.. Again, about 110MB/sec.

It's just when copying from the VM...

Edited by Hostilian

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