Ignoring HTTP/2 Ping when output blocked

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hi, i am getting some of these.....what do they mean?  and what do I do about it?

 

kernel: L7: ffff8800735d3270: Ignoring HTTP/2 Ping when output blocked

 

 

2 comments

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Tony Vaughan

Hello,

I checked with my colleagues,

in HTTP/2 a client can send a "ping" to the server to check  to see if the server is ok.
In this case, the server has received one such ping
but there is currently a "flow" sending a data frame back to the client - and waiting for the client to accept the frame (i.e. flow controlled).

the main questions i would have are,
are you using a HTTP2 VS (just to confirm)?
are you seeing many of these errors in the logs?
is it causing any problems for traffic or is it something you just noticed in the logs?

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tguadagno

hi, thanks for the reply.  i am using http2.  i have seen several in the past couple of days.  i cannot yet tell if clients are impacted...i am not getting any complaints but i am not sure they would care...(they may just reload and move on).

 

thanks