> From: Sean Carnes [mailto:[EMAIL PROTECTED]
> Thanks for the quick response. Your evaluation is similar to
> what I have
> been saying to my counterparts in regards to load balancing.
> The back-end
> servers seem to be responding in a timely fashion right now. We have
> performance data from the time period and nothing seems
> abnormal.
I can well believe it. What I'm pointing out is that *if* you could squeeze
shorter response times out of these back-end servers, you might be able to ride
out the increased load on the Tomcat servers. If your system's already as
well-tuned as I suspect, however, there's probably nothing more to be gained
there.
> I think
> this can be attributed mostly to the increased load, on that
> that day due to shift switchover we have about 50% more users.
Crikey. 50% more users is not a small amount!
Do you have any monitoring deployed that allows you to monitor free Java heap
space and/or garbage collections? That would tell you how much headroom you
had, and might be able to warn you of impending failure. I'd be cautious of
adding too much monitoring, though, as it'll reduce your throughput and might
tip a system over the edge sooner than it'd otherwise fail.
> Wednesday was the most that
> we have ever had. Thanks for the suggestions, you certainly helped me
> backup my theory to the powers that be.
All (mailing-list) advice free, and worth every penny! There are folks on this
list who have much more experience with large systems than I have, and I'm
rather hoping they'll chip in with their views.
- Peter
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