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Please show VM configuration. Did you install from original ISO, not modified "compilation"?

In addition, you CAN install Debian 7 in container, and you CAN get needed template. Just enable 'Container template' in your storage properties (Datacenter -> Storage), then go to your storage, click 'Contents', then select 'Templates'. Find tempate named 'debian-7.0-standard' and click...

If you want LXC and have no right template to it, you can install pure KVM virtual machine from ISO I mented above, and then convert it to container (right mouse click on selected VM). And, as @tom noted absolutely right, please understand PVE and virtualisation basics to know the difference...

http://get.debian.org/cdimage/archive/7.11.0/amd64/iso-dvd/debian-7.11.0-amd64-DVD-1.iso

I have CentOS 5.9 (Elastix 2.5 distribution) KVM VM on Proxmox 4.4, it runs just fine. Disk device and 3 network devices are VirtIO. [root@pbx ~]# uname -rv 2.6.18-406.el5 #1 SMP Tue Jun 2 17:26:20 EDT 2015 [root@pbx ~]# cat /etc/redhat-release CentOS release 5.11 (Final) [root@pbx ~]# lsmod |...

Here is topic discussed today: https://forum.proxmox.com/threads/slow-performance-and-low-fsyncs-rate.28635/ Maybe it can help. Also remember to switch SATA controller to AHCI mode.

Wonderful :-) WBR, Dmitry, Russia.

I think there is no issues with the kernel. I have a nubmers of Proxmox installations on different hardware (Intel, AMD) with the same kernel and there is no any problems with performance. There are SAS "Server" disks, but attached to on-board simple controller without cache, known as FakeRAID...

FlorianB, First, to get high fsync rates and high performance, get SAS RAID controller with on-board cache memory (and battery backed, of course), such as LSI Logic or Adaptec. Use SAS HDD, which provides high performance and reliability. In fact, using cache enabled controllers (or enabling...

My Windows 2008 (not R2!) had random BSODs. After in-place upgrading up to 2008R2 bsods gone. Also, I have several other 2008R2 and 2012R2 servers, also run without BSODs. I use VirtIO for both disk and network.

No, I haven't. Default installation, only daemon config files change (httpd, DrWeb daemon, etc.)

I have same problem, both on Intel Xeon and AMD Opteron CPUs. Intel Xeon E5620, AMD Opteron 6128

Why don't you use virtio for disk and network? Linux VM runs smoothly with virtio, with high performance.

AFAIK, Linux if very CPU tolerant. AMD K6 means you have old 32-bit system, so you can choose almost any CPU type.

apcupsd works only with APC devices. I have several types of UPS, CyberPower for example. nut supports it via HID UPS driver.

Thanks.

Please describe the solution, so people can find it.

Probably, you have to remove corresponding lines in files: Offending key for IP in /etc/ssh/ssh_known_hosts:4 Matching host key in /root/.ssh/known_hosts:6 Then connect again to save new generated keys.

Also, please read this: http://superuser.com/questions/421004/how-to-fix-warning-about-ecdsa-host-key

SSH Key differ when you login by ip address and by host.