Messages in this thread | | | From | Eric Dumazet <> | Date | Mon, 29 Nov 2021 08:37:50 -0800 | Subject | Re: [PATCH v2 net-next] net: snmp: add statistics for tcp small queue check |
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On Mon, Nov 29, 2021 at 7:57 AM Jakub Kicinski <kuba@kernel.org> wrote: > > On Sun, 28 Nov 2021 14:01:02 +0800 menglong8.dong@gmail.com wrote: > > Once tcp small queue check failed in tcp_small_queue_check(), the > > throughput of tcp will be limited, and it's hard to distinguish > > whether it is out of tcp congestion control. > > > > Add statistics of LINUX_MIB_TCPSMALLQUEUEFAILURE for this scene. > > Isn't this going to trigger all the time and alarm users because of the > "Failure" in the TCPSmallQueueFailure name? Isn't it perfectly fine > for TCP to bake full TSQ amount of data and have it paced out onto the > wire? What's your link speed?
Yes, I would be curious to have some instructions on how this new SNMP variable can be used, in a concrete case.
Like, how getting these SNMP values can translate to an action, giving more throughput ?
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