Enabling SSL causes NHTTP task to sometimes utilize 99% of CPU

HCL Domino Domino Forum
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We have recently enabled SSL on our server for an application. On server has 1 GB ram, 6.02CF2, 2.4 GHz CPU and relatively light usage.

Since we have enabled SSL, we will occasionally have the HTTP task CPU utilization spike up to 99%. This lasts any where from 5 to 10 minutes and then resets (sometimes - other times I must stop and restart the HTTP task). Anyone else having this problems?

On a side note, we occasionally are getting the “HTTP Server: SSL Handshake failure, IP Address [192.168.1.10], Keyring[keyfile.kyr], [SSL Error: Network IO error], code [4165]”. This is reported in the Lotus Support db as being a known bug with no known side-effects. I’m not sure if this is part of the problem or not.

Any suggestions about what to try. Also is there a way I can monitor the HTTP task and have it e-mail me when it spikes?

Thanks!

-Adam

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Subject: Enabling SSL causes NHTTP task to sometimes utilize 99% of CPU

Hi,

A client has reported the same problem as well. After implementing SSL, the cpu usage goes very high, 100%.

I don’t have the details of the problem yet, but was wondering if you managed to solve the problem.

thanks.

boon keng

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Subject: Enabling SSL causes NHTTP task to sometimes utilize 99% of CPU

Hi,

First of all, need to say that SSL has an impact on CPU utilization.

You said you enabled SSL on an application. Is this the first SSL enabled application? Was SSL working properly for other database(s)?

If yes, try reinstalling the certificate.

Have you moved that database from a R5 server? or was that application developed in an R5 environment? If yes, recompile the scripts, especially webagents.

Do you have webagents in the application?

Does CPU go up when you open a static-content document? or run a webagent?

What I mean is that it may not be related to SSL only, review other changes you have done around the same time you enabled SSL.

John.