Thread (16 messages) 16 messages, 5 authors, 2009-12-28

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

From: David Miller <davem@davemloft.net>
Date: 2008-12-03 00:37:29
Also in: lvs-devel

From: "Catalin(ux) M. BOIE" <redacted>
Date: Tue, 2 Dec 2008 16:16:04 -0700 (MST)
quoted
From: "Catalin(ux) M. BOIE" <redacted>
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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