We use some ESX 4.1 hosts with dedicated VM that does some high-performance processing.
VMDirectPath / PCIpassthrough is used with PCI & PCIe cards together with 2xCOM ports, 1xPAR port.
We see dynamically occuring performance issues.
IRQ 18 in VM is shared betweeen vmxnet and one passthrough card.
Can this cause performance issues?
Is there a way to manually configure IRQ number for VMDirectPath / PCIpassthrough cards or vmxnet?
Are there any VMX options which could resolve this?
Thx for help