Date: Tue, 14 Jun 2022 15:21:50 -0400 From: mike tancsa <mike@sentex.net> To: Navdeep Parhar <np@FreeBSD.org>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: impact on performance by querying Chelsio NIC filter rules Message-ID: <6508c580-fbe5-1588-eb66-5240978d2f5c@sentex.net> In-Reply-To: <781946ca-0f6e-7c80-134a-2c7166d7aeeb@FreeBSD.org> References: <ea213b9c-6ce1-b285-f32c-b6c9da77a2f7@sentex.net> <781946ca-0f6e-7c80-134a-2c7166d7aeeb@FreeBSD.org>
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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
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