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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1179763474.12708.7.camel@chaos>
Date:	Mon, 21 May 2007 18:04:34 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Frank Sorenson <frank@...rocks.com>
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

On Mon, 2007-05-21 at 10:11 -0500, Frank Sorenson wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> 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).

> [   23.159166] Bluetooth: HCI device and connection manager initialized
> [   23.159170] Bluetooth: HCI socket layer initialized
> [   23.159179] BUG: at mm/slab.c:777 __find_general_cachep()
> [   23.159181] 
> [   23.159182] Call Trace:
> [   23.159190]  [<ffffffff81097a67>] __kmalloc+0xa7/0xe0
> [   23.159195]  [<ffffffff810238dd>] cache_k8_northbridges+0x9d/0x120
> [   23.159200]  [<ffffffff814ddce3>] gart_iommu_init+0x33/0x5b0
> [   23.159205]  [<ffffffff811d4027>] class_register+0x177/0x180
> [   23.159210]  [<ffffffff814d8379>] pci_iommu_init+0x9/0x20
> [   23.159214]  [<ffffffff814cf6cc>] kernel_init+0x14c/0x320
> [   23.159218]  [<ffffffff8100b1b8>] child_rip+0xa/0x12
> [   23.159223]  [<ffffffff81184150>] acpi_ds_init_one_object+0x0/0x7c
> [   23.159227]  [<ffffffff814cf580>] kernel_init+0x0/0x320
> [   23.159230]  [<ffffffff8100b1ae>] child_rip+0x0/0x12

Hmm, other than this gem there is nothing obvious in the boot log. Does
the box boot normal with 2.6.22-rc2 ? 

Where does the slowness start ? Right from the beginning or later in the
boot process ?

	tglx


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/