Increase disk load puts a heavy load on the CPU in the form of interrupts.

[sash22]

Hello.
Configuration Proxmox (see picture).
Storage System data - ceph 0.80
Client operating system - Windows 2012R2
VIrtio DRV- latest version.


Increase disk load puts a heavy load on the CPU in the form of interrupts.


Occurs only on Windows machines, particularly noticeable on the SQL server load is above average. When these brakes strongly growing disk queue. At times the disk queue can go up to 10-20

 

[mir]

What IOPS does your ceph cluster provide?
Database servers generates a lot of small random IO so running a fio test testing for randow rw with 4k blocks should give you a hint of the available IOPS.