3 ms·

Having a VM in picture decimates video and storage performance. I've tried this exact approach not a week ago. There's an NVMe drive with ~700MBps read speed a

by eps 10y ago

Having a VM in picture decimates video and storage performance. I've tried this exact approach not a week ago. There's an NVMe drive with ~700MBps read speed and a GFX 10xx hooked up to a 4K display. The best I could squeeze from VM was 245 MBps in read and I couldn't get rid of a lag in cursor movement when running Visual Studio full screen. Going up and down one a page was OK, but when you get to the edge, there was a very noticeable hiccup before it started scrolling. CPU and memory throughputs were largely unaffected though. That's using VMware Workstation 12.5 with Win 8.1 as both guest and host. I ended up with just sticking all data onto an encrypted USB3.1 SSD and setting up the desktop and the laptop identically. Not as elegant as a VM would've been, but works really well so far.

ryanlol 10y ago
>Having a VM in picture decimates video and storage performance. No, using shit virtualization software decimates those. You can pass through both the GPU and the disk directly to the VM.
- eps 10y ago
  You are ignoring the context, which is that of a portable VM. 1. You obviously can't direct map local fixed drives, and direct access to USB drives yields the same 200-300 MBps read performance, which also has a lot of jitter. 2. To pass-through a GPU you need to be running an ESXi with all the consequences. In particular, moving a VM, while doable through export/import, becomes a royal pain in the ass. PS. And try and express your thoughts in a bit more civil manner next time.
  - ryanlol 10y ago
    >1. You obviously can't direct map local fixed drives, and direct access to USB drives yields the same 200-300 MBps read performance, which also has a lot of jitter. Of course you can, and if you want to access the "host" OS just boot the drive in a VM and hope for the best. USB will be just as bad as it'd be without VMs. >2. To pass-through a GPU you need to be running an ESXi with all the consequences. In particular, moving a VM, while doable through export/import, becomes a royal pain in the ass. I think for this you'd probably just want to use a live distro with KVM rather than messing with ESXi. But yeah, it'll be significantly harder. It's a strange problem so you'll need something more configurable than vmware player. >PS. And try and express your thoughts in a bit more civil manner next time. I don't see anything offensive in my comment, unless I'm supposed to be offended by your "pain in the ass" wording.

by eps 10y ago

ryanlol 10y ago

>Having a VM in picture decimates video and storage performance. No, using shit virtualization software decimates those. You can pass through both the GPU and the disk directly to the VM.

eps 10y ago
You are ignoring the context, which is that of a portable VM. 1. You obviously can't direct map local fixed drives, and direct access to USB drives yields the same 200-300 MBps read performance, which also has a lot of jitter. 2. To pass-through a GPU you need to be running an ESXi with all the consequences. In particular, moving a VM, while doable through export/import, becomes a royal pain in the ass. PS. And try and express your thoughts in a bit more civil manner next time.
- ryanlol 10y ago
  >1. You obviously can't direct map local fixed drives, and direct access to USB drives yields the same 200-300 MBps read performance, which also has a lot of jitter. Of course you can, and if you want to access the "host" OS just boot the drive in a VM and hope for the best. USB will be just as bad as it'd be without VMs. >2. To pass-through a GPU you need to be running an ESXi with all the consequences. In particular, moving a VM, while doable through export/import, becomes a royal pain in the ass. I think for this you'd probably just want to use a live distro with KVM rather than messing with ESXi. But yeah, it'll be significantly harder. It's a strange problem so you'll need something more configurable than vmware player. >PS. And try and express your thoughts in a bit more civil manner next time. I don't see anything offensive in my comment, unless I'm supposed to be offended by your "pain in the ass" wording.