On 06/10/09 10:11, Mahesh wrote:
Hi,
If the NIC supports multiple TX/RX queues what is the best way to
distribute MSI-X vectors to get better performace.
1) One per TX/RX or
2) one for Tx and one for RX
Does allocating a single vector for TX and RX provides a better performance
or otherway around. Assumption is platform supports enough vectors.
In a well designed NIC driver, you shouldn't need to take Tx interrupts
very often. They are necessary only when the NIC's TX ring has filled
faster than you can drain it. I would assume spreading interrupts so
each rx/tx pair got an interrupt would yield better allocation of the
interrupt vectors.
- Garrett
Thanks in advance
Mahesh
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