Re: [lvs-users] ksoftirqd 100% Processor Usage

To: " users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] ksoftirqd 100% Processor Usage
From: Thomas Pedoussaut <thomas@xxxxxxxxxxxxxx>
Date: Mon, 24 Nov 2008 10:57:45 +0000
Mikio Kishi wrote:
> - (4) problem
> When the CPS(new connections/sec) become over 15,000,
> %CPU of ksoftirqd "jump" to 100% !!!
> If it's just a max limit of hardware spec, I'll understand it.
> But if we can improve the CPS much further, please tell me how to do.

This is more in line with hardware / software limitations than with a
bug in your config. The situation I was describing happened at very low CPS.

As has transpired on the ML, you can try to boost your performances by:
- upgrading the kernel to a 2.6.20
- change your network cards to better models that can handle more than
one packet per interrupt.


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