Problem with tomcat hanging on Shib 2.4

[Cantor, Scott]

On 8/29/14, 10:29 AM, "Matthew Slowe" <m.slowe at kent.ac.uk> wrote:
>
>First I'm going to refer to a thread on the JISC-SHIBBOLETH mailing list
>last year on the subject (no signin required)
>
>https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind1310&L=jisc-shibboleth&F
>=&S=&P=60
>
>We have three IDPs running in a very similar setup to yourselves (3 RHEL
>VMs (each are 2cpu, 4G) on VMware) running, then, 1.7.0_25 (now _55)
>each servicing up to 330,000 authentications per day.

And that's Oracle's JVM. So that points the finger at Tomcat. Jetty is a
much better choice, so that would be my next suggestion. I actually have
never run 2.x under Tomcat in fact, only 1.3. I ran for a couple of years
on Jetty 7.5 and now I'm on 9.1 (for about a month, so far no issues and
classes started this week).

I can't directly compare, as I'm on Red Hat 5, not 6. But we have had no
issues under comparable loads to that, slightly lower.

I'm also not on VMs, and that's another red flag for me. I don't know if
the OP is.

The other thing I'd point to is whether authentication might be involved.
The IdP can appear to hang if that's blocking.

-- Scott