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scottf
 Post subject: Lockup problem
PostPosted: Tue Jul 20, 2004 10:09 am 
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Joined: Sat May 22, 2004 1:42 pm
Posts: 49
Help...

my system records happily, and seems to play things back fine, etc. BUT I've been experiencing weird lockup's when I've left live video running and the system records two shows in the middle of the night. The first show starts, and then the system explodes 8 minutes into the second show... the system seems happy recording off of the 401 OR the 350 card separately. Watching Live TV while the 350 is recording seems fine. Basically the system seems to be totally non-responsive. (cannot ssh in, cannot switch to a console session, etc. I haven't been able to check for free memory, etc.

The error I'm seeing in my system log is:

Code:
Jul 19 06:13:06 mythtv -- MARK --
Jul 19 06:25:03 mythtv kernel:  printing eip:
Jul 19 06:25:03 mythtv kernel: c01334c9
Jul 19 06:25:03 mythtv kernel: Oops: 0002
Jul 19 06:25:03 mythtv kernel: CPU:    0
Jul 19 06:25:03 mythtv kernel: EIP:    0010:[kmem_cache_free_one+89/146]    Tainted: P
Jul 19 06:25:03 mythtv kernel: EFLAGS: 00010046
Jul 19 06:25:03 mythtv kernel: eax: 11121211   ebx: c1607dd4   ecx: df32a000   edx: c42b0000
Jul 19 06:25:03 mythtv kernel: esi: 00000007   edi: df32a0c0   ebp: c120c930   esp: c1617f00
Jul 19 06:25:03 mythtv kernel: ds: 0018   es: 0018   ss: 0018
Jul 19 06:25:03 mythtv kernel: Process kswapd (pid: 4, stackpage=c1617000)
Jul 19 06:25:03 mythtv kernel: Stack: 00000202 df32a360 df32a360 c0132d93 c1607dd4 df32a360 df32a360 c013f670
Jul 19 06:25:03 mythtv kernel:        c1607dd4 df32a360 c014185f df32a360 df32a360 c1616000 c120c930 000001d0
Jul 19 06:25:03 mythtv kernel:        c0291058 c0133c8f c120c930 000001d0 c1616000 00000c80 00004c4a 000001d0
Jul 19 06:25:03 mythtv kernel: Call Trace:    [kmem_cache_free+19/32] [__put_unused_buffer_head+80/96] [try_to_free_buffers+127/416] [shrink_cache+783/1296] [shrink_caches+61/80]
Jul 19 06:25:03 mythtv kernel:   [try_to_free_pages_zone+80/224] [kswapd_balance_pgdat+87/160] [kswapd_balance+22/48] [kswapd+144/192] [rest_init+0/96] [arch_kernel_thread+35/48]
Jul 19 06:25:03 mythtv kernel:   [kswapd+0/192]
Jul 19 06:25:03 mythtv kernel:
Jul 19 06:25:03 mythtv kernel: Code: 89 50 04 c7 01 00 00 00 00 8d 53 08 8b 43 08 89 01 89 4b 08
Jul 19 06:25:03 mythtv kernel:  <6>note: kswapd[4] exited with preempt_count 3
Jul 19 06:53:06 mythtv -- MARK --
Jul 19 07:13:06 mythtv -- MARK --
Jul 19 07:33:06 mythtv -- MARK --
Jul 19 07:52:52 mythtv kernel: attempt to access beyond end of device
Jul 19 07:52:52 mythtv kernel: 03:03: rw=1, want=1099786592, limit=10506510
Jul 19 08:13:06 mythtv -- MARK --
Jul 19 08:19:05 mythtv kernel: Kernel logging (proc) stopped.
Jul 19 08:19:05 mythtv kernel: Kernel log daemon terminating.


And then this morning...

Code:
Jul 20 03:40:20 mythtv -- MARK --
Jul 20 04:00:02 mythtv kernel: saa7115[0]: decoder set size
Jul 20 04:00:02 mythtv kernel: Hpsc: 0x00001, Hfsc: 0x00600
Jul 20 04:00:02 mythtv kernel: Setting full NTSC height
Jul 20 04:07:56 mythtv kernel:  printing eip:
Jul 20 04:07:56 mythtv kernel: c0132ec7
Jul 20 04:07:56 mythtv kernel: Oops: 0000
Jul 20 04:07:56 mythtv kernel: CPU:    0
Jul 20 04:07:56 mythtv kernel: EIP:    0010:[kmem_cache_reap+151/624]    Tainted: P
Jul 20 04:07:56 mythtv kernel: EFLAGS: 00010007
Jul 20 04:07:56 mythtv kernel: eax: a9b1b2a6   ebx: c1607dd4   ecx: 000005fc   edx: c1607de4
Jul 20 04:07:56 mythtv kernel: esi: c1616000   edi: 00000000   ebp: 00000006   esp: c1617f54
Jul 20 04:07:56 mythtv kernel: ds: 0018   es: 0018   ss: 0018
Jul 20 04:07:56 mythtv kernel: Process kswapd (pid: 4, stackpage=c1617000)
Jul 20 04:07:56 mythtv kernel: Stack: 000005fc 00000000 00000000 00000000 00000000 00000020 000001d0 c0291058
Jul 20 04:07:56 mythtv kernel:        c0291058 c0133fe0 000001d0 0000003c 00000020 c0134070 c1617f94 00000000
Jul 20 04:07:56 mythtv kernel:        00000000 c0291058 00000001 c1616000 00000000 c0134227 c0290f80 00000000
Jul 20 04:07:56 mythtv kernel: Call Trace:    [shrink_caches+16/80] [try_to_free_pages_zone+80/224] [kswapd_balance_pgdat+87/160] [kswapd_balance+22/48] [kswapd+144/192]
Jul 20 04:07:56 mythtv kernel:   [rest_init+0/96] [arch_kernel_thread+35/48] [kswapd+0/192]
Jul 20 04:07:56 mythtv kernel:
Jul 20 04:07:56 mythtv kernel: Code: 8b 00 39 d0 75 f3 8b 7b 24 8b 14 24 89 f9 8fb 43 44 d3 e2 85
Jul 20 04:07:56 mythtv kernel:  <6>note: kswapd[4] exited with preempt_count 1


The main pieces of the system:
Nforce2 board
PVR-350 (encoder 2, priority set to 20)
WinTV-401 (encoder 1, priority left at 0)

Any idea's?
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Xsecrets
 Post subject:
PostPosted: Tue Jul 20, 2004 10:29 am 
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Joined: Mon Oct 06, 2003 10:38 am
Posts: 4978
Location: Nashville, TN
I feel your pain. I had the kernel oops in kswapd for along time myself. I never really did figure it out. things to look at might need to lax your memory timings. make sure dma is on for the harddrive, do a fsck of all drives. Concider switching to XFS for /cache and /myth. I'm not sure what cured mine. I've done all of the above plus some complete reinstalls

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Have a question search the forum and have a look at the KnoppMythWiki.

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scottf
 Post subject:
PostPosted: Tue Jul 20, 2004 10:53 am 
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Joined: Sat May 22, 2004 1:42 pm
Posts: 49
XFS... ok, I'll try that and see what happens with that change.

Some of the pieces seem somewhat like voodoo computing. I'm not really a novice on Linux, but haven't done much with AV before playing with Mythtv...

Thanks for the reply.
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cesman
 Post subject:
PostPosted: Tue Jul 20, 2004 10:58 am 
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Joined: Fri Sep 19, 2003 7:05 pm
Posts: 5088
Location: Fontana, Ca
Unless you are locking up during the installation of KnoppMyth, you should not post here.

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cesman

When the source is open, the possibilities are endless!
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scottf
 Post subject:
PostPosted: Tue Jul 20, 2004 12:04 pm 
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Joined: Sat May 22, 2004 1:42 pm
Posts: 49
Sorry
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turkish
 Post subject:
PostPosted: Wed Jul 21, 2004 7:24 pm 
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Joined: Mon Feb 23, 2004 11:37 pm
Posts: 87
I have been experiencing lock-ups lately. Usually happens if I leave LiveTV going and fall asleep, by the time i wake up its locked. It did this a while back, then stoped. I'm thinking it has to do with heat, at least my problem, its damn hot in my room. Probably the card overheats a bit.

It all started to happen again as it got hotter so... something to think about.
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ke6oms
 Post subject:
PostPosted: Thu Jul 22, 2004 2:46 pm 
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Joined: Tue May 25, 2004 2:33 pm
Posts: 42
Yeah, this should probably be moved to somewhere other than Installation; heck, I'll bet it's not even KnoppMyth related. If it's the problem I think you're having (that is, the same probem I am), then it's the ivtv driver for the PVR-350. I can have the computer running for weeks at a time with no problems as long as I don't try to watch something while it's recording somethine else (I never watch live tv, but I'm sure it'd have similar problems).

I understand that the newer versions of ivtv fix the problem, but I'm waiting for an official "release" (rather than just downloading a release candidate).

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Athlon 700 + PVR-350. KnoppMyth R5A16. ReiserFS on an LVM volume for myth data. Thanks to SnapperDragon, everything seems quite happy.
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scottf
 Post subject:
PostPosted: Thu Jul 22, 2004 9:05 pm 
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Joined: Sat May 22, 2004 1:42 pm
Posts: 49
it very well could be the ivtv driver...

I see these every once in a while in messages:

Code:
Jul 21 22:28:21 mythtv kernel: ivtv: giving up waiting for DMA pending clear


I also see this everyonce in a while in mythbackend.log

Code:
strange error flushing buffer ...
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Xsecrets
 Post subject:
PostPosted: Thu Jul 22, 2004 9:21 pm 
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Joined: Mon Oct 06, 2003 10:38 am
Posts: 4978
Location: Nashville, TN
well I don't have a pvr350 I have a pvr250 and I used to get these kernel oops in kswapd every couple of weeks till I reinstalled and probably more importantly moved my data drives over to XFS. I know it shouldn't make a difference, but I saw a post that said it fixed their lockup problems and I switched, and I don't have the problems anymore. I just can't say for sure it was that, because I did a reinstall in that general timeframe as well.

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Have a question search the forum and have a look at the KnoppMythWiki.

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