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<body class='hmmessage'><div dir='ltr'>The problem was making a copy of a large file inside the VM (duplicating the file in the VM)<div>It was very slow and it looks like it is the ide device.</div><div>Changed the controller to virtio and it is much faster.</div><div>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.</div><div>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.</div><div>Thanks</div><div><br><div>> Date: Tue, 29 Jul 2014 20:39:59 -0500<br>> From: bfriesen@simple.dallas.tx.us<br>> To: gearboxes@outlook.com<br>> CC: omnios-discuss@lists.omniti.com<br>> Subject: Re: [OmniOS-discuss] KVM - copy paste in VM<br>> <br>> On Tue, 29 Jul 2014, Machine Man wrote:<br>> <br>> > Hello all,<br>> > First I want to thank everyone involved with creating and supporting OmniOS.<br>> > <br>> > On one of the systems we have a need to run two VMs using KVM. <br>> > Everything works fine except when a copy of a large file is made inside the VM. Copying over the network result<br>> > in 38MB/s - 70MB/s and inside the VM it will drop to 700KB/s and somtimes stall entirely. It takes just over 5<br>> > min to copy 2.5GB inside the VM.<br>> <br>> What direction is your network copy going (from VM to native server, <br>> from native server to VM, from VM on one server to VM on another)?<br>> <br>> You have not described your situation very clearly to us at all.<br>> <br>> Bob<br>> -- <br>> Bob Friesenhahn<br>> bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/<br>> GraphicsMagick Maintainer, http://www.GraphicsMagick.org/<br></div></div> </div></body>
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