Issue 11
© Solarflare Communications 2014
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Solarflare Server Adapter
User Guide
should be taken into account when selecting the number of DIMMs to populate in the server.
Consult your motherboard documentation for details.
Intel® QuickData
Intel® QuickData Technology allows VMware ESX to data copy by the chipset instead of the CPU, to
move data more efficiently through the server and provide fast, scalable, and reliable throughput.
I/O AT can be enabled on the host and on guest operating systems. For advice on enabling I/OAT in
the guest, consult the relevant Solarflare section for that guest, or the documentation for the guest
operating system. I/OAT must be enabled on the host if it is to be used in the guests.
To enable I/OAT on the VMware ESX host:
On some systems the hardware associated with I/OAT must first be enabled in the BIOS
Log in to the ConsoleOS on the VMware ESX host, and enter:
# esxcfg-advcfg -s 1 /Net/TcpipUseIoat
Reboot the VMware ESX host
To verify I/OAT is enabled, from the ConsoleOS enter:
# vmkload_mod -l | grep -i ioat
Server Motherboard, Server BIOS, Chipset Drivers
Tuning or enabling other system capabilities may further enhance adapter performance. Readers
should consult their server user guide. Possible opportunities include tuning PCIe memory controller
(PCIe Latency Timer setting available in some BIOS versions).
NOTE:
The following VMware KB article should be read when enabling I/OAT.