@gduperrey Absolutely understand. I didn't now about the Escape key as Manilx mentioned. Next time, I will press Esc to see if there is any useful information and report it here. This was just new behavior and wanted to report it informally.
This was related to a very large number of snapshots attached to the VMs. This was cause by a bug with backup not cleaning up snapshots if an iso was attached. I was told this was fixed with the latest update.
@Pilow
While that could be true only 1 vm was shuffled to another SR. But all VMs now being backup with CBT enabled.
Well... i just check again at backups and after the last scheduled backup at 1am all vms fell back to full backup again.
Difficile de parler de « réalité » avec les benchmarks. Vérifiez aussi l'iodepth (qui dépend du type matériel que vous avez, sur du flash/NVMe vous pouvez monter à 128 ou 256), la latence entre en compte aussi bien sûr.
Le bottleneck principal est le monothreading de tapdisk, si vous testez sur plusieurs VMs différentes la somme va monter de manière assez régulière.