The
Cache tab contains information about the MDEX Engine
cache.
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Section
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Description
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Main Cache
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Provides details on totals, including number of entries in
the cache, size of entries, number or lookups in the cache, number of
rejections, percentage of hit rate and miss rate, number and size of evictions
from the cache, number of reinsertions, total reinsertion time and average
creation and eviction times.
In particular, if you need to analyze the MDEX Engine cache,
examine the results in the following columns. Analyzing these results may help
you tune your cache and re-design your front-end application to improve
performance of the MDEX Engine.
Number of
rejections. Counts greater than zero in this column indicate that the cache is
undersized and you may want to increase it.
Number of
reinsertions. Large counts in this column indicate that simultaneous queries
are computing the same values, and it may be possible to improve performance by
sequencing queries, if the application design permits.
Total reinsertion
time. Examining this column is useful for quantifying the overall performance
impact of queries that contribute to the "Number of reinsertions" column. This
column represents the aggregated time that has been spent calculating identical
results in parallel with other queries. This is the amount of compute time that
potentially can be saved by sequencing queries in a re-design of the front-end
application.
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