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Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance

From: David Wilson <david(dot)t(dot)wilson(at)gmail(dot)com>
To: Marko Kreen <markokr(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, toruvinn <toruvinn(at)lain(dot)pl>, pgsql-bugs(at)postgresql(dot)org, pgsql-performance(at)postgresql(dot)org
Subject: Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance
Date: 2009-07-15 15:16:23
Message-ID: e7f9235d0907150816w194f0d87xb23989486a9a7b07@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-bugspgsql-performance
On Wed, Jul 15, 2009 at 11:10 AM, Marko Kreen<markokr(at)gmail(dot)com> wrote:

> From security standpoint, wasting more cycles on bad passwords is good,
> as it decreases the rate bruteforce password scanning can happen.
>
> And I cannot imagine a scenario where performance on invalid logins
> can be relevant..

DoS attacks. The longer it takes to reject an invalid login, the fewer
invalid login attempts it takes to DoS the server.

-- 
- David T. Wilson
david(dot)t(dot)wilson(at)gmail(dot)com

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