[Koha-bugs] [Bug 15970] New: Plack should not clear syspref cache

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=15970

            Bug ID: 15970
           Summary: Plack should not clear syspref cache
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: ASSIGNED
          Severity: enhancement
          Priority: P5 - low
         Component: Architecture, internals, and plumbing
          Assignee: jonathan.druart at bugs.koha-community.org
          Reporter: jonathan.druart at bugs.koha-community.org
        QA Contact: testopia at bugs.koha-community.org
        Depends on: 15341, 13815

Just played with nytprof and found something exciting:

If I remove the following line:
  C4::Context->clear_syspref_cache();
from the psgi file, the processing time is divided per 2 (!)

With the clear cache:
for 15.8s (of 18.6s), executing 2588556 statements and 903720 subroutine calls
in 421 source files and 63 string evals.

Without the clear cache:
for 7.82s (of 8.69s), executing 904432 statements and 262539 subroutine calls
in 421 source files and 63 string evals.

I have tried to update a pref (NoLoginInstructions): it's saved and displayed
correctly.
Am I missing something?


Referenced Bugs:

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=13815
[Bug 13815] plack loose CGI qw(-utf8) flag creating incorrect utf-8 encoding
everywhere
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=15341
[Bug 15341] Performance - Retrieve all sysprefs at once
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