linux-kernel - Re: Why not distribute timer handlers on CPUs on SMP

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Date:	Wed, 6 Oct 2010 09:50:48 +0800
From:	bhs <haishan.bai@...il.com>
To:	bhs <haishan.bai@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Why not distribute timer handlers on CPUs on SMP


On Oct 6, 2010, at 9:05 AM, bhs wrote:

> Hello,
> 
> I am just curious about why handle the timer functions on a CPU serially but not distribute them over CPUs
> even on a SMP system?
> 


Yea, it already distributed over CPUs at calling add_timer(), timer function was bounded to a cpu on which
it was created.

I am sorry for my noise.

 
> The timer wheel handler function __run_timers() serializes the timer functions on a CPU,
> is there any design consideration that handling timers on a CPU is more reasonable than distribute them
> over CPUs?
> 
> 
> Best regards
> Shan Hai

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