I have heard that a very large product queue can start incurring so
much overhead to maintain that it can slow LDM down noticeably. I have
not, however, found anything in writing saying as much via Google
searches.
We're in a situation where our 4GB PQ is dropping down to a max age of
around 5 minutes at times. We're trying to decide if we just keep
increasing the size of the queue or look for other solutions.
I have found that building a ramdisk and maintaining the queue there to
be the most efficient means of processing the ldm queue... on my
noaaport relays, I only maintain the queue and do not write anything via
pqact so that xfer is nearly instantaneous... the deciding factor in the
instances of relays or production boxes with ldm queues is then how much
physical ram is available to be utilized just for queues vs the need for
operations
cheers,
--patrick
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Patrick L. Francis
Director of Research & Development
Aeris Weather
http://aerisweather.com/
http://modelweather.com/
wxprofessor@xxxxxxxxx
http://facebook.com/wxprofessor/
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