# [OmniOS-discuss] KVM - copy paste in VM

Machine Man gearboxes at outlook.com
Wed Jul 30 12:30:15 UTC 2014

- Previous message: [OmniOS-discuss] KVM - copy paste in VM
- Next message: [OmniOS-discuss] KVM - copy paste in VM
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

    The problem was making a copy of a large file inside the VM (duplicating the file in the VM)It was very slow and it looks like it is the ide device.Changed the controller to virtio and it is much faster.I tried using an image file for this disk, but this was slower than pointing to zvol on ide.  I will test with the controller set to virtio and file img for disk.Overall,it is not bad now and the virtual machine is much more usable when making large copies, still seems slow from what I would expect. Copy start off at 120MB/s and quickly drops down to 14MB/s and then jumps up and down to about 30 or 40 a few times, but no longer stalls as before.Thanks
    > Date: Tue, 29 Jul 2014 20:39:59 -0500
    > From: bfriesen at simple.dallas.tx.us
    > To: gearboxes at outlook.com
    > CC: omnios-discuss at lists.omniti.com
    > Subject: Re: [OmniOS-discuss] KVM - copy paste in VM
    >
    > On Tue, 29 Jul 2014, Machine Man wrote:
    >
    > > Hello all,
    > > First I want to thank everyone involved with creating and supporting OmniOS.
    > >
    > > On one of the systems we have a need to run two VMs using KVM.
    > > Everything works fine except when a copy of a large file is made inside the VM. Copying over the network result
    > > in 38MB/s - 70MB/s and inside the VM it will drop to 700KB/s and somtimes stall entirely. It takes just over 5
    > > min to copy 2.5GB inside the VM.
    >
    > What direction is your network copy going (from VM to native server,
    > from native server to VM, from VM on one server to VM on another)?
    >
    > You have not described your situation very clearly to us at all.
    >
    > Bob
    > --
    > Bob Friesenhahn
    > bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
    > GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

    -------------- next part --------------
    An HTML attachment was scrubbed...
    URL: <http://lists.omniti.com/pipermail/omnios-discuss/attachments/20140730/c5d86fb8/attachment.html>

- Previous message: [OmniOS-discuss] KVM - copy paste in VM
- Next message: [OmniOS-discuss] KVM - copy paste in VM
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

More information about the OmniOS-discuss mailing list