Dell Brocade Adapters - Manual (Page 140)

116 Brocade Adapters Troubleshooting Guide
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Tuning network drivers (CNA or NIC)
4
VMware tuning
For performance tuning on VMware, refer to the following publications on the VMware website at
www.vmware.com :
• Performance Tuning Best Practices for ESX Server 3. Refer to the following sections:
- Storage Performance Best Practices
- Related Publications
• Fibre Channel SAN Configuration Guide. Refer to “Using ESX Server with SAN: Concepts.”
Tuning network drivers (CNA or NIC)
This section provides resources for tuning network drivers for CNAs or Fabric Adapter ports
configured in CNA or NIC mode on Linux, Windows, and VMware systems. Note that the default
values set for the driver parameters discussed in this section should provide optimum
performance. However, you may need to modify these values depending on your network
environment. Please follow your host and operating system guidelines when doing so.
Windows tuning
All Windows tunable parameters for the network driver are optimized for best performance using
default values. For details on parameters in the following table, refer to the “Adapter Configuration”
appendix in the Brocade Adapters Installation and Reference Manual.
Table 9 provides default
parameters for Windows tunable parameters.
TABLE 9 Default values for Windows tunable parameters
Parameter Default
Log Level 3
Interrupt Moderation
(Set for receive
interrupts) On
Jumbo Packet Size 9,000 bytes
TCP-UDP Checksum
Offload Enabled
Network Address N/A
Priority and VLAN Disabled
Receive Side Scaling
(RSS) Enabled
Large Segmentation
Offload V1 IPv4 (LSOv1) Enabled
Large Segmentation
Offload V2 IPv4 (LSOv2) Enabled
Large Segmentation
Offload V2 IPv6 (LSOv2) Enabled
FlowControl, Transmit
(Tx) and Receive (Rx) Enabled