io delay

Hallo, sobald mehr als 3 virtuelle Systeme laufen, heben die IO Delay Werte spürbar ab. Folglich reagieren die Systeme immer langsamer. Solange es sich bei den virtuellen Systemen nur um Linux handelt geht es noch. Schlimm wird es meistens, wenn zusätzlich ein virtuelles Windows-System läuft...

Hi, Today, I realized that since the night between May the 27th and May the 28th, when we rebooted one of our nodes, its disk latency just went nuts. Alas, it's not just its disks, it's also the disks of any VM started on this node. By investigating, I was able to correlate the beginning of...

Hello, Today I try to recover VM from achive and get a huge IO delay on PVE node. Before that, everything was fine. I noticed the following: when "space reduction due to 4K zero blocks" at end of the recovery report is great enough, I get huge IO delay. For example, when I recover this arhive...

Hi guys, I am struggling since 4.4-12 to 5.1-36 upgrade (to be fair it's a new deploy) due to terrible I/O performances via iSCSI (but after some testing also NFS seems affected). The problem doesn't always show up, but I have been able to reproduce it in this manner: VM just booted up with...

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 am getting very high IO Delay on any kind of a load. It basically stalls all VMs. We are a web host and we have five CloudLinux/cPanel VMs (all with about 100 sites each), A Windows 2016/Plesk VM, and a CentOS7/Sentora VM running. When this happpens all sites stop responding, I get kernel:NMI...

Cheers, since I started using proxmox, I am having serious issues in "high" (i.e. peak) I/O cases. Setup description Computiation power and memory is not an issue. The system is running on a HW-Managed RAID5 array, alltogether ~8TiB, about 20% used. About 10-15 VMs are running on it with...

Hi all! I recently got GPU passthrough working on one of my VMs and I'm delighted to say that everything appears to be working as it should, with one minor exception. I'm noticing some serious slowness in the IO/hard disk department. Sometimes the guest machine appears to be fine. Other times...

Fresh install on fresh 1TB RAID 10 array this image was from restoring a VM from the local HDD (i only have local drives) that was a < 50GB LZO backup and everything slowed down a LOT, this is a fresh install that i just installed today.. made sure to update everything so its all freshly up...