linux-kernel - Re: [realtime kernel 2.6.21-rt2 and up] Extremely slow bootup for x86

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Date:	Mon, 21 May 2007 10:11:35 -0500
From:	Frank Sorenson <frank@...rocks.com>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	Maarten Maathuis <madman2003@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [realtime kernel 2.6.21-rt2 and up] Extremely slow bootup for
 x86_64

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Thomas Gleixner wrote:
> On Mon, 2007-05-21 at 00:00 -0500, Frank Sorenson wrote:
> 
>> I see the slow bootup as well, even with 2.6.22-rc2-hrt1.  It takes at
>> least 5 times as long to boot, for X to start, to login, etc.
> 
> Can you provide me your .config and a boot log (please enable
> CONFIG_PRINTK_TIME and add "apic=verbose" to the kernel command line).
> 
> Can you also try with "hpet=disable" ?

All attached.  With "hpet=disable", it's still slow (clocksource becomes
acpi_pm).

Frank
- --
Frank Sorenson - KD7TZK
Linux Systems Engineer, DSS Engineering, UBS AG
frank@...rocks.com
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View attachment "2.6.22-rc2-hrt1-fs2.config" of type "text/plain" (55455 bytes)

View attachment "2.6.22-rc2-hrt1-fs2.dmesg" of type "text/plain" (52559 bytes)

View attachment "2.6.22-rc2-hrt1-fs2-nohpet.dmesg" of type "text/plain" (55456 bytes)