From: | Bruce Momjian <bruce(at)momjian(dot)us> |
---|---|
To: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
Cc: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: Why does analyze_new_cluster.sh use sleep? |
Date: | 2012-08-23 21:05:45 |
Message-ID: | 20120823210545.GB10337@momjian.us |
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Lists: | pgsql-hackers |
On Thu, Aug 23, 2012 at 02:17:44AM -0400, Peter Eisentraut wrote:
> The script analyze_new_cluster.sh output by pg_upgrade contains several
> "sleep" calls (see contrib/pg_upgrade/check.c). What is the point of
> this? If the purpose of this script is to get the database operational
> again as soon as possible, waiting a few seconds doing nothing surely
> isn't helping.
>
> I could maybe see the point of waiting a bit between the different
> vacuumdb calls, to catch some breath, but the one before the first call
> to vacuumdb is highly dubious to me.
The sleep is there so the user can read the status message, in case it
scrolls off the screen once the next stage starts.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
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