From: | Rob Sargent <robjsargent(at)gmail(dot)com> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: opening connection more expensive than closing connection? |
Date: | 2011-03-03 16:05:59 |
Message-ID: | 4D6FBC67.30307@gmail.com |
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Lists: | pgsql-general |
top posting my self to clarify, since the title is in fact inverted:
close might be more expensive the open.
On 03/03/2011 08:28 AM, Rob Sargent wrote:
> A developer here accidentally flooded a server with connection opens and
> closes, essentially one per transaction during a multi-threaded data
> migration process.
>
> We were curious if this suggests that connection clean up is more
> expensive than creation thereby exhausting resources, or if perhaps the
> server wasn't returning to the essentially backgrounded clean-up task
> adroitly (enough)?
>
> Don't worry we are now using a connection pool for the migration, but
> the situation was, um, er, entertaining. The server side said
> eof-from-client, the client side said many variations of cannot-connect,
> then they would work out their differences briefly and do the same dance
> over again after sufficient connections.
>
> Cheers,
> rjs
>
>
>
>
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