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Date:      Fri, 29 Oct 2010 16:55:53 +0300
From:      Alexander Motin <mav@FreeBSD.org>
To:        Andrey Smagin <samspeed@mail.ru>
Cc:        current <current@freebsd.org>
Subject:   Re: Strange hang HPET in current
Message-ID:  <4CCAD269.9070300@FreeBSD.org>
In-Reply-To: <mailpost.1288165946.4430634.32071.mailing.freebsd.current@FreeBSD.cs.nctu.edu.tw>
References:  <4CC676C8.8070303@FreeBSD.org> <mailpost.1288165946.4430634.32071.mailing.freebsd.current@FreeBSD.cs.nctu.edu.tw>

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Hi.

Andrey Smagin wrote:
> In my box (amd64, current 20.oct.10 ) 
> some time hang by 5-10 minutes with random subsystem, may 
> hang disk access,network,very often tty. In most no output in log, 
> sometimes with messages "calcru: .....". After 5-10 minutes it 
> continue work again. When I disabled HPET in bios - problem gone.

Could you give some more info? Is it physical machine? Is it SMP? What
chipset do you have? Does HPET works in per-CPU or global mode? Does
`vmstat -i` shows HPET interrupts during that time?

-- 
Alexander Motin



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