Massive Load 120-150% when clone an VM

Bidi

Renowned Member
Feb 12, 2016
109
2
83
36
Hello guys,

I`m facing a problem, and i think is new because i never sow this problem like 1-2 mo ago.

So i got an VM with win 7 on it and i clone it to avoid making again and again new instalations, the clone it takes like 20-30 secands is fast from my opinion but the server load jumps to 120-150% :| and it stays like this aprox 10 minutes even if the "clone" finished in 20 secands and i dont understand why dose it make like this, on ther servers with proxmox version 3.4 i don't face this problem like in the curent one with 5.3.8.

I got another 2 servers on the cluster but i didnt tested them cuz only in the one i get this load i gont the vm from witch i make clones.

Is there anyone facing the same issue ? or having some idee what can cauze this.

The server is:
CPU(s)

80 x Intel(R) Xeon(R) CPU E7- 4870 @ 2.40GHz (4 Sockets)
Kernel Version

Linux 4.15.17-1-pve #1 SMP PVE 4.15.17-9 (Wed, 9 May 2018 13:31:43 +0200)
PVE Manager Version

pve-manager/5.3-8/2929af8e

And it has 256GB RAM.
The HDDS ar Seagate enterprise SAS

After the load gows back the server works complet perfect.

Thank you

Logs:
Code:
create full clone of drive sata0 (local:3000/vm-3000-disk-0.raw)
Formatting '/var/lib/vz/images/143/vm-143-disk-0.raw', fmt=raw size=37580963840
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TASK OK
 

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Hi,

I guess this problem occurs because of the specter and meltdown kernel patches, where IO can be 30% slower.
Do you have actual firmware updates on the MB? This can reduce the behavior.
Also please update to current Kernel.
 

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