Hp ProLiant DL980 G7 Server Bedienungsanleitung PDF herunterladen (Seite 44)

Interrupt affinity

Network interface interrupt affinity settings include All Close CPUs, One Close CPU, or All CPUs.

HP ESO recommends All Close CPUs in most cases.

Port affinity

SQL Server uses an application port (usually Port 1433) whose affinity can be set to one or more

CPU NUMA Nodes. As with SQL CPU Affinity, this improves performance by directing network

traffic bound to a CPU or group of CPUs used by SQL Server. Additional ports can also be added

and removed.

To delete a specific network port, follow these steps:

1. Select the IP address of the port to be deleted.

2. Clear all boxes, along with that port number box.

3. Click Set.

To delete all ports associated with an IP address, follow these steps:

1. Select the desired IP address.

2. Click Delete Port until all entries are removed.

3. Click Set.

NOTE: Any changes you make in the Network page will not take effect until the system is rebooted.

Receive-Side Scaling

Receive-Side Scaling (RSS) resolves the single-processor bottleneck by allowing the receive-side

network load from a network adapter to be shared across multiple processors. RSS enables packet

receive processing to scale with the number of available processors. This allows the Windows

Networking subsystem to take advantage of multi-core processor architecture.

Received-side scaling is enabled by default in Windows Server 2008 and Windows Server 2008

R2. To take advantage of RSS, network drivers must be written with RSS capabilities. Currently,

RSS cannot make use of more than 64 processors with Windows 2008 R2, even with Service Pack

1, released in February 2011.

Modern network drivers are configured to use RSS through settings found in the Windows Device

Manager, in the Advanced Properties of the network interface. Depending on the driver versions

and OS versions, HP ESO might not support some of the RSS features. Contact HP support for

details.

HP ESO recommends that RSS be enabled as necessary. The following parameters of every Network

Interface will have corresponding RSS recommended settings:

• Base Processor — The first logical CPU number to be used for RSS.

• Max RSS Processors — The maximum number of logical processors to be used for RSS of the

network interface.

• RSS Ring (also known as RSS Queue) — The maximum number of CPUs a NIC can support

for RSS. The number of RSS CPUs on a system would be capped by the MaxNumRssCpus

registry key or the RSS ring NIC property setting, whichever is the lowest.

Figure 39 (page 45) shows the Network page view of RSS parameter optimization

recommendations.

44 Using HP ESO

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Hp ProLiant DL980 G7 Server Bedienungsanleitung Seite 44