linux-kernel - Re: sata

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Date:	Mon, 14 Apr 2008 10:32:08 +0200
From:	"Peter Gervai" <grinapo@...il.com>
To:	trenn@...e.de
Cc:	"Tejun Heo" <htejun@...il.com>, "Rich West" <Rich.West@...mo.com>,
	"Jeff Garzik" <jeff@...zik.org>,
	"Wander Winkelhorst" <w.winkelhorst@...il.com>,
	linux-kernel@...r.kernel.org,
	"Linux IDE mailing list" <linux-ide@...r.kernel.org>,
	"Marin Mitov" <mitov@...p.bas.bg>
Subject: Re: sata_via

On Mon, Apr 14, 2008 at 10:13 AM, Thomas Renninger <trenn@...e.de> wrote:

>  > IRQ routing seems hosed on your machine.  Thomas any ideas?
>
>  Not really.
>  First, I'd try to be able to reproduce this more quickly, an IO
>  benchmark or similar (bonnie?).
>
>
>  ----------------------------------------------
>  Peter Gervai posted a similar report recently, Elias Oltmanns had an
>  idea (on linux-ide or linux-acpi list):
>  Subject: Re: Hard freeze / interrupt-related death / instability
>  Wed, 09 Apr 2008
>
>  (but Tejun was already involved into that, at least in the link posted
>  there, but reading it up might be worth it).
>  Is this the same problem?

Mmhm, as I was (kindly) cc'd I reply my results so far, but since
there was a mention of IRQBALANCE, I checked myself, since I was
pretty sure I have switched that off:
# zegrep IRQ /proc/config.gz
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_IRQBALANCE=y
CONFIG_HT_IRQ=y
CONFIG_IDEPCI_SHARE_IRQ=y
CONFIG_HPET_RTC_IRQ=y
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_DEBUG_SHIRQ is not set

Darn, I'd say. I go and switch balancer off, it doesn't really do much
good for me anyway. (What about userland balancer, does it hose things
as well?)

But apart from that I'm runnig under " pci=nomsi " for the last 4 days
without a freeze (which usually occured every 1-2 days, but I'll wait
for more, and I will try to bonnie++ myself in the meantime). It did
not freeze under "acpi_irq_balance" either for 6 days, but the machine
overall felt a bit jerky (pretty ugly irq overlaps I guess).

If any of you prefer me to run under other options, or to apply that
patch I was advised to, I'll just do that. Just voice yourself.  (I
have an open request for "noapic acpi_irq_nobalance" and the patch.)

Thanks for your time, as always (and I try to share mine :)).

-- 
 byte-byte,
 grin
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