Jung-uk Kim napsal(a):
On Wednesday 19 November 2008 12:01 pm, Jan Sebosik wrote:
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 :).
Can you try the attached patch with HPET enabled from BIOS? Sorry, it
will not solve the cd/acd problems but I have a hunch that it may
solve the HPET problem.
Thanks,
JK
Hi
I`ve tried your patch right now, but didn`t notice any change in
machine`s behavior.
Thanks for your interest and time.
Best regards
--
Jan Sebosik, Slovakia
[EMAIL PROTECTED]
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