slow

Hi, I installed a fresh Proxmox VE and tested the speed of the disk: root@pve:~# dd if=/dev/zero of=./test bs=1G count=1 1+0 records in 1+0 records out...

Changing sched_autogroup_enabled from 1 to 0 makes a HUGE difference in performance on busy Proxmox hosts Also helps to modify sched_migration_cost_ns I've tested this on Proxmox 4.x and 5.x: echo 5000000 > /proc/sys/kernel/sched_migration_cost_ns echo 0 >...

EVERY time we need to restart one of our nodes in our cluster we are faced with this HORRIFIC impact on disk I/O while the Ceph pools need to be "rebuilt". It virtually consumes all of the resources and we need to know how to prevent this. I am simply talking about issuing a 'reboot' after...

Hi, I have a server with 4.4-22 installed (updated since I read somewhere that it should help, but it doesn't) and sometimes have extremely slow writes in the guests. For example sometimes it works, and most of the time when a larger file (50MB+ size) is written, the guest goes into soft...

Hello ! I use a self-bought server colocated somewhere in Romania and I feel that there isn't normal what happen. When I install OS (any version of centos/freebsd) it is going very, very slow (over 10 minutes for a minimal iso). Server configuration: HDD: single ADATA SU650 SSD 240 GB...

I completely wiped out my system and started from nothing after I assumed I made a mistake. I thought because I mixed SSD and SAS drives in LVM it caused my IO issues. This time I completely left the SSD drives untouched and installed proxmox on the large SAS raid 5 array on the hw controller...

I'm running a windows server 2016 VM on proxmox, so far it has no roles defined or anything just core + gui installed. I have one shared folder and I'm busy copying data from our current file shares onto it using Allwaysync software over the network. While this copy process is happening the...

Fresh installed proxmox, 2 HDD for system and 2 HDD for storage : The only guest installed - windows2008r2 with latest VirtIO drivers from virtio-win-0.1.126.iso Normally windows guest starts in 10-20 seconds, but sometime it may go on up to one hour. At this moment atop shows that system...

I decided to try out Proxmox (again). Since I am tired of vcenter`s high demand for memory But my vms seems pretty slow, and unresponsive at times, the same goes for the webui. My windows vm even stopped responding while i was converting a image to qcow. I am also getting this message when i...

Hi Guys, I have an HP ML10v2 which i want to use as an all in one server (hypervisor, fileserver, LXC). I have installed Proxmox (choose ZFS RAID 0 during install) on the internal HDD 500GB 7200RPM seagate. after that i installed samba and did the following: zfs sharesmb=yes rpool/DATA While...

I have a Windows 10 VM on my proxmox. The performance are bad (High CPU and disk usage) See below my configuration : Proxmox Host : CPU : E5-2440 v2 1.9 Ghz RAM : 32 Go Disk : Dell MD3800i (10 Gb) PVE : 4.4.-2 Windows 10 VM OS : Windows 10 entreprise (On proxmox GUI I selected MS Windows...

Hello everybody! I've the following problem and I'd like to understand whether it's something "usual" or if I'm doing something wrong. I've some small guests running Windows Server 2012 R2, with 32 GB disk hosted on a SAN, 1 socket, 2 cores, 1 GB RAM, 2 virtual NICs. The hosts run a software...

Hi Community Proxmox A few days ago doing some network performance tests I have a serious problem, I want to show the characteristics of my environment and how I do the test: My Environment: 2 machines with proxmox 4.3. These have 4 physical interfaces eth0, eth1, eth2 and eth3. I have them...

If I reboot proxmox, all nodes come up really fast as it should. But one Node need 10 Minutes before it begin to boot. I start the VM 105 and open the VNC-Viewer on it. Screen keeps Black for 10 Minutes. After 10 Minutes I see the Boot-Process starting in VNC. Why are there such a delay...

Hello, Thanks for tanking the time reading this, We just bought our new Proxmox production enviroment based on our trials with some cheap second hand hardware we bought. Our production network is equiped with the following hardware: 2x Supermicro 1U servers with Xeon E1240 CPU with 48GB RAM...

I set up a VM for 2k12r2. The disk is a sparse raw file, converted from a .vhdx snapshot taken with disk2vhd. The configuration of the system, with the disk connected to ide0 was as follows: agent: 1 balloon: 2048 boot: cd bootdisk: ide0 cores: 2 hotplug: usb ide0...

Seeing something very odd with Samsung 850 Pro SSD as Ceph journal. When running tests for speed as per: https://www.sebastien-han.fr/blog/2014/10/10/ceph-how-to-test-if-your-ssd-is-suitable-as-a-journal-device/ I'm getting extremely low numbers.: 1 - io=83448KB, bw=1390.8KB/s, iops=347, runt=...

Hi, I have a cache problem in proxmox. See attached screenshot! the cache size continues to increase. the problem is the cache will no cleanup automatically. and the problem is, if the ram space is full the proxmox system swap on the hdd. any idea why proxmox have so much cache size and will...

Hi, I downloaded this Ubuntu 16.04 Image: http://download.proxmox.com/images/system/ubuntu-16.04-standard_16.04-1_amd64.tar.gz The Image is very slow, MySQL INSERT UPDATE and DELETE working for 5 minutes and more. I test PHP 7.0 with phpmyadmin and other PHP Applications same problem here, the...