•Buses 36 and 37 : Node 1 (processors 2 and 3)
•Buses 82 and 86 : Node 2 (processors 4 and 5)
•Buses 169 and 170 : Node 3 (processors 6 and 7)
Because the Windows Server® operating system designates each processor according to its node numbering, it assigns the two processors of node 0 as processor 0 and processor 1. These are represented internally by a bitmask whose offsets correspond to the processor numbers. So, the processors on node 0 are represented by a
To set the affinity for the Windows® IO Accelerator driver:
CAUTION: Implementing these settings requires a firm knowledge of the physical layout of the system. Incorrect settings can degrade system performance.
1.Open the Windows® Registry Editor.
2.Navigate to the Parameters folder.
3.Create the SetWorkerAffinity2 tag of type REG_DWORD.
4.Set the value to 0x03.
5.Continue creating the remaining tags with their accompanying mask values as follows:
SetWorkerAffinity2 : 0x03
SetWorkerAffinity11 : 0x03
SetWorkerAffinity36 : 0x0C
SetWorkerAffinity37 : 0x0C
SetWorkerAffinity82 : 0x30
SetWorkerAffinity86 : 0x30
SetWorkerAffinity169 : 0xC0
SetWorkerAffinity170 : 0xC0
6.Either reboot (recommended) or disable the server, and then enable each instance of the driver.
Windows driver affinity 30
