- Tuning ESX/ESXi for better storage performance by modifying the maximum I/O block size
- ESX has performance issues due to IRQ sharing
- Enabling IOAT and Jumbo frames
- Troubleshooting network performance issues
- Analyzing SCSI Reservation conflicts on VMware Infrastructure 3.x and vSphere 4.x
- Determining if multiple virtual CPUs are causing performance issues
- Slow performance caused by misconfigured local storage or SAN array
- Slow performance caused by out of date firmware on a RAID controller or HBA
- Testing virtual machine storage I/O performance
- iSCSI and Jumbo Frames configuration on ESX 3.x, ESX 4.x and ESXi 5.x
- Using esxtop to identify storage performance issues
- Configuring Jumbo Frames on a vNetwork Distributed Switch
- Verifying correct storage settings on ESX 4.x and ESXi 4.x
- Network I/O Resource Management in vSphere 4.1 with vDS
- Impact of virtual machine memory and CPU resource limits
- Checking your firmware and BIOS levels to ensure compatibility with ESX/ESXi
- Enabling Jumbo Frames for VMkernel ports in a virtual distributed switch
- Changing the Queue Depth for QLogic and Emulex HBAs
- High co-stop (%CSTP) values seen during virtual machine snapshot activities
- Balloon driver retains hold on memory causing virtual machine guest operating system performance issues
Source KB 2001003