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Date:      Tue, 21 Aug 2001 16:40:54 -0400 (EDT)
From:      Mike Silbersack <silby@silby.com>
To:        Giorgos Verigakis <verigak@algol.vtrip-ltd.com>
Cc:        <freebsd-hackers@freebsd.org>
Subject:   Re: Zope's performance issues
Message-ID:  <Pine.BSF.4.30.0108211638490.74527-100000@niwun.pair.com>
In-Reply-To: <Pine.BSF.4.30.0108211539240.74527-100000@niwun.pair.com>

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On Tue, 21 Aug 2001, Mike Silbersack wrote:

> On Tue, 21 Aug 2001, Giorgos Verigakis wrote:
>
> The current scheme causes problems with TIME_WAIT recycling, which may
> cause long delays in establishing new connections if you're connection to
> the same host rapidly enough to cause TIME_WAIT recycling to be an issue.
> This is why there's a huge spike only when you get to 1000 hits/second.
>
> There could be other reasons, of course, but this will overshadow the
> others.  I tested your test program with apache, and the change is
> noticeable.  So, hold off on further testing until later this week.
>
> Mike "Silby" Silbersack

There's a second problem with your program too:  It causes TIME_WAITs to
pile up on the client side, which is not a well-handled situation for us.
Use apachebench for future testing, it will automatically generate the
stats you are looking for.

Mike "Silby" Silbersack


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