Hi
so I`ve played with it again, and results are strange.
Regardless if HPET is enabled or not.. FreeBSD with atapicd kldloaded
won`t mount /dev/acd1 (mounting /dev/cd0 works). When I tryied to mount
acd0 it still hangs at READ_BIG TIMEOUT.
When I left CD in drive, and rebooted (I wanted to switch HPET), it
freezes on cd0 initialization with READ_BIG timeout (I think it`s
causing GEOM_LABEL module trying to read CD label).
So I think that disabling GEOM_LABEL would help a little.
I`ll try on friday with another SATA DVD drive if it`s not a bug inside
firmware of LG :) .
Best regards, Jan
Jeremy Chadwick napsal(a):
On Wed, Nov 19, 2008 at 03:24:40PM +0100, Jonas Lund wrote:
(NOTICE: i'm more of a lowlevel guy close to hardware guy not knowing
much of freebsd internals)
The fact that FreeBSD is NOT using HPET for timing might be the answer
to the "mystery". The HPET hardware might be/get enabled but not
handled and firing tons of unexpected interrupts (as you said.. linux
produces tons of data into the log, what's the actual content of those
logs?).
These interrupts in turn might disturb the cd drive in some fashion?
Can you bring up some interrupt statistics in freebsd? like a counter
of the number of events?
First and foremost, thanks for chiming in, Jonas. The more eyes on this
matter the merrier.
vmstat -i can provide interrupt rate and count in FreeBSD, e.g.:
interrupt total rate
irq1: atkbd0 227 0
irq6: fdc0 10 0
irq17: uhci1++ 4479741 10
cpu0: timer 814684046 2000
irq256: em0 17219212 42
cpu1: timer 814683722 2000
Total 1651066958 4053
2008/11/19 Jan Sebosik <[EMAIL PROTECTED]>:
[snip]
Okay now I understand. Thank you for taking the time to explain! :-)
And when you disable HPET in the BIOS, what happens?
Maybe I should try -CURRENT sometimes with your proposed ata patches (or
are they merged in right now?).
Sure, you're free to try CURRENT. The ATA code on CURRENT was
modularised, and also a very large patch applied; I can't promise it
fixes your CD/DVD drive issues though.
I had problems getting CURRENT to see my PCI SATA Promise controller (it
wasn't appearing in pciconf -lv, nor dmesg), but I had no problems with
CURRENT seeing my ICH7 controller. I also had other problems with
CURRENT which caused me to go back to RELENG_7. CURRENT is undergoing
lots of changes right now, so I recommend subscribing to -current if you
plan on running it.
I personally haven't written any ATA patches, except for extending
atacontrol to support per-disk write cache enable/disable. I think
you might be confusing me with Andrey V. Elsukov, who *has* written
lots of ATA stuff.
Now happens almost nothing (I don`t understand), except the cd/acd
problems (READ_BIG errors), but I don`t understand why it is happening..
maybe guys from Intel optimized this board too much for twista OS :).
Wishing all the best
--
Jan Sebosik, Slovakia
[EMAIL PROTECTED]
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--
Jan Sebosik, Slovakia
[EMAIL PROTECTED]
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