Forum Discussion
pepeshark
Nimbostratus
Nimbostratusstalled/blocked request
Hi,
My short topology:
client browser->F5->IIS servers
I have a .Net web application. Randomly some request is in stalled/blocked state in browser.
For example:
I can see a request that spend 7 minutes in stalled state and then it is processed less than 1 second.
I can't see high cpu, memory, connection load at this time. The peak connection is 4k, but I think it is not too high.
At same time I can see lot of success request also.
I think the request is waiting for something on my F5, but I don't know for what. Could anyone help me how can I detect the reason?
My opinion is that I reached the connection limit but I can see any error message in log about it. How can I check it?
Thanks.
- zamroni777
Nacreous
if have not, enable Oneconnect in the virtual server config to reduce number of server side TCP connections.
you can simply use the default Oneconnect profile.
i have seen downtime in a big telco service provider was solved simply by enabling it.https://my.f5.com/manage/s/article/K7208
pepesharkThanks for you idea. But it is already set up.
- zamroni777
in that case, you should do tcpdump in f5 and also check the webserver.
it is also possible that the webserver gets slow response from database servers, storage, etc.
