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Networking
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Recommended range: 1000–10000
NetRXClusterDelayOn
This parameter specifies how sensitive to changes in traffic rate the VMkernel is when
it is in interrupt mode.
Lowering the value of this parameter causes the VMkernel to switch to polling mode
faster in response to sudden increases in traffic rate.
Raising the value of this parameter causes the VMkernel to be more tolerant of erratic
traffic rates.
Recommended range: 0–10
NetRXClusterDelayOff
This parameter specifies how sensitive to changes in traffic rate the VMkernel is when
it is in polling mode.
Lowering the value of this parameter causes the VMkernel to switch to interrupt
mode faster in response to sudden decreases in traffic rate.
Raising the value of this parameter causes the VMkernel to be more tolerant of erratic
traffic rates.
Recommended range: 10–30
NetRXClusterTMaxFreq
The interrupt clustering feature relies on a periodic timer both for sampling the traffic
rate and for processing received packets when the NIC is in polling mode. The value of
this parameter specifies the frequency (as a power of 2) at which the network adapter
is polled for packets when it is in polling mode.
Lowering the value of this parameter can increase performance in situations where
traffic rates are high and the traffic is made up of connections to many different
machines.
Raising the value of this parameter can increase performance in situations where
traffic rates are low or the traffic is made up of connections to only a few machines.
Recommended range for 100Mb connections: 9–11
Recommended range for 1000Mb connections: 10–12
NetRXClusterTMinFreq
The value of this parameter specifies the frequency (as a power of 2) at which the
traffic rate is sampled when the network adapter is in interrupt mode.
- VMware ESX Server 1
- VMware, Inc 2
- 3145 Porter Drive 2
- Palo Alto, CA 94304 2
- Table of Contents 3
- Welcome to VMware ESX Server 13
- What’s New in Version 1.5 15
- System Requirements 17
- Legacy Devices 21
- Technical Support Resources 22
- Installing, Configuring and 25
- Upgrading ESX Server 25
- ESX Server 26
- Before You Begin 28
- Installing VMware ESX Server 28
- Your Server 33
- 7. Click Perform Action 54
- GSX Server Virtual Machines 71
- Preparing to Use the Remote 79
- Management Software 79
- Linux – RPM Installer 81
- Linux – Tar Installer 81
- Remote Console on page 114 82
- Workstation 84
- Using the VMware Management 94
- Interface 94
- Management Interface 99
- Running VMware ESX Server 105
- Management Interface window 105
- Using Disk Modes 108
- Monitoring System Status 109
- Using the Remote Console 114
- VMware Tools Settings 117
- Cutting, Copying and Pasting 119
- Using SNMP with ESX Server 125
- Configuring SNMP Security 132
- Name Data type Description 139
- Backing Up Virtual Machines 140
- Operating Systems 144
- Guest Operating System 147
- Guest Operating Systems 149
- To enable expert mode, 154
- To enable expert mode, … 156
- Service 167
- Console Operating System and 169
- VMkernel 169
- Operating System 171
- The VMkernel Loader 173
- VMkernel Device Modules 174
- Machines 179
- Configuring Virtual Machines 181
- Using VMkernel Devices 182
- Modifying the SMBIOS UUID 187
- Enabling Repeatable Resumes 191
- Authenticating Users 193
- Default Permissions 194
- Using vmkfstools 199
- Naming VMFS File Systems 205
- Determining SCSI Target IDs 208
- Sharing the SCSI Bus 210
- Using Storage Area Networks 212
- Networking 215
- Promiscuous Mode 222
- Sharing Network Adapters and 224
- Virtual Networks 224
- Performance Tuning for Heavy 228
- Network Loads 228
- Resource Management 231
- CPU Resource Management 234
- Multiprocessor Systems 235
- Memory Resource Management 239
- Admission Control 240
- Dynamic Allocation 240
- Memory Reclamation 241
- Memory Sharing 242
- Sizing Memory on the Server 249
- Virtual Machine Memory 250
- Memory Overcommitment 251
- More Information 252
- Network Bandwidth Management 253
- Disk Bandwidth Management 257
- Configuration File Options 258
- Glossary 261
- Appendix A: I/O Adapter 265
- Compatibility Guide 265
- Linux Driver Compatibility 267
- VMware Certification 267
- Adaptec SCSI Adapters 268
- Emulex Fibre Channel Adapters 272
- QLogic Fibre Channel Adapters 272
- Compaq RAID Controllers 272
- Mylex DAC960 RAID Controllers 273
- Intel Gigabit Ethernet NICs 277
- The OpenSSL Toolkit License 280
- License Issues 280
- Original SSLeay License 281
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