netdev - Re: [PATCH] IPVS: Allow boot time change of hash size.

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Message-Id: <20081202.163729.158874214.davem@davemloft.net>
Date:	Tue, 02 Dec 2008 16:37:29 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	catab@...edromix.ro
Cc:	jmack@...d.net, netdev@...r.kernel.org, lvs-devel@...r.kernel.org
Subject: Re: [PATCH] IPVS: Allow boot time change of hash size.

From: "Catalin(ux) M. BOIE" <catab@...edromix.ro>
Date: Tue, 2 Dec 2008 16:16:04 -0700 (MST)

> > From: "Catalin(ux) M. BOIE" <catab@...edromix.ro>
> > Date: Tue, 2 Dec 2008 08:34:22 -0700 (MST)
> >
> > This is the part that is driving everybody crazy about your
> > report.  You seem to be changing this without having observed
> > a measurable performance problem first, and then tracked it down
> > specifically to this hash table's size.
> 
> I was looking for anything that could get me past of 88.000 request per
> seconds.
> The help text told me to raise that value if I have big number of
> connections. I just needed an easy way to test.

You're just repeating what I said, you "think" it should be
changed and as a result you are wasting everyones time.

You don't actually "know", you're just guessing using random
snippets from documentation rather than good hard evidence of
a need.
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