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BUG #15396: initdb emits wrong comment for range foreffective_io_concurrency - Mailing list pgsql-bugs

From PG Bug reporting form
Subject BUG #15396: initdb emits wrong comment for range foreffective_io_concurrency
Date
Msg-id 153771876450.14994.560017943128223619@wrigleys.postgresql.org
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Responses Re: BUG #15396: initdb emits wrong comment for range for effective_io_concurrency
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The following bug has been logged on the website:

Bug reference:      15396
Logged by:          James Robinson
Email address:      james@jlr-photo.com
PostgreSQL version: 11beta3
Operating system:   OSX
Description:

inidb in 11 beta4 emits a postgresql.conf with the following:

  ...
  # - Asynchronous Behavior -

  #effective_io_concurrency = 0        # 1-1000; 0 disables prefetching
  ...

But un-commenting and changing to any value other than zero produces:

  2018-09-23 15:57:15.960 GMT [33648] LOG:  1 is outside the valid range for
parameter "effective_io_concurrency" (0 .. 0)

Something up here? If not a tunable knob, why describe it and / or have the
misleading comment?

beta4 Installed via macports.

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