Re: impact on performance by querying Chelsio NIC filter rules

From: mike tancsa <mike_at_sentex.net>
Date: Tue, 14 Jun 2022 19:21:50 UTC
On 6/14/2022 3:13 PM, Navdeep Parhar wrote:
> On 6/14/22 7:46 AM, mike tancsa wrote:
>> Hi All,
>>
>>      I have been making use of the built in filtering capabilities of 
>> the Chelsio 10G and above NICs with great success so far. I have a 
>> new project that would mean querying the card (via cxgbetool t5nex0 
>> filter list) every 5-10 seconds. Does the act of retrieving those 
>> values have any impact on the performance of the card ? I have about 
>> 50 rules right now.
>
> Filter retrieval in cxgbe is a lightweight activity involving a few 
> PCIe writes and reads.  It has no impact on the performance of the 
> hardware's data path.
>
>
Thanks Navdeep for the confirmation, not to mention the most excellent 
hardware and drivers!

     ---Mike