[ naviserver-Feature Requests-1427620 ] Better ns_cache statistics

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Feature Requests item #1427620, was opened at 2006-02-08 16:22
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Category: C-API
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Zoran Vasiljevic (vasiljevic)
Assigned to: Zoran Vasiljevic (vasiljevic)
Summary: Better ns_cache statistics

Initial Comment:
(Posted on behalf of Gustaf Neumann by vasiljevic)

Determining a good cache size and useful 
time-out-values is a non-trivial task.
ns_cache_stats returns already some useful
statistics, but i would say, at least two
important figures are missing, which are
subsumed by the # of flushes. Actually,
there are at least 3 kind of flushes:

 a) expires (entry is too old)
 
 b) prunes (entry thrown out of the 
    cache due to space competition)
 
 c) intentional flushes (flush command,
    deletion of an entry, etc.)

Currently, nscache lumbs a+b+c under flushes.
It would be nice to obtain separate values
for these kinds of flushes to get some idea,
whether or not a cache behaves like expected,
or whethe it should be increased or decreased.


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