Re: [PATCH] IPVS: Allow boot time change of hash size.
From: David Miller <davem@davemloft.net>
Date: 2008-12-02 22:51:29
Also in:
lvs-devel
From: David Miller <davem@davemloft.net>
Date: 2008-12-02 22:51:29
Also in:
lvs-devel
From: "Catalin(ux) M. BOIE" <redacted> Date: Tue, 2 Dec 2008 08:34:22 -0700 (MST)
Hello, Joe!quoted
On Fri, 28 Nov 2008, Catalin(ux) M. BOIE wrote:quoted
Hello, Joe! No, I did not measure it, but, I read the help text:. .quoted
The help is wrong or I am missing something?there's a bit somewhere else in the same section saying not to change the hash size unless you know more than we do :-)Where, exactly? So, should I not change it at all even if I have a great number of simultaneously connections?
You should only ever change something like this if you actually observe a specific performance problem. 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. You seem to want to change it because it seems to you like that is what should be done. You don't really know if it even matters or not for your workload.