HP IO Accelerator for BladeSystem c-Class Performance Tuning Manual de usuario descargar pdf (Pagina 30)

Windows driver affinity 30

• 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 32-bit mask of b00000000000000000000000000000011, or more conveniently,

0x00000003.

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.

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HP IO Accelerator for BladeSystem c-Class Performance Tuning Manual de usuario Pagina 30