[mythtv-users] PVR250 + BT878

Flavio Villanustre flavio at geminis.dyndns.org
Tue Jun 3 00:23:22 EDT 2003 

I'm currently running mythtv in a box with two tuner cards: one Hauppauge 
PVR250 as the first card and one Hauppauge WinTV-go as the second one. The 
ivtv driver is the CVS version from last week and mythtv is the CVS 
version from yesterday (but the same problem happened for previous 
checkouts).

Each card works perfectly when it's alone, however, when both are
configured at the same time in the system and I activate PIP on live TV,
after a few minutes I get mythbackend using 100% of my CPU (the system is
a Pentium IV 2.4GHz with 512 MB of ram). After that point, they only way 
of getting the system back to normal conditions is killing mythbackend.

I've been able to reproduce the problem almost every time I enabled PIP 
for long enough.

General statistics for the system including vmstat, iostat, etc. don't 
show any significant information, other than mythbackend is taking all the 
available CPU.

The ouput from a backtrace in gdb follows. Please let me know which other 
useful information I could provide.

Thanks and best regards,

Flavio

------------------------------------------------------------------

Thread 18 (Thread 1246076208 (LWP 11617)):
#0  0xffffe002 in ?? ()
No symbol table info available.
#1  0x080d1e5d in NuppelVideoRecorder::VbiThread(void*) (param=0x48341008)
    at NuppelVideoRecorder.cpp:1582
        nvr = (NuppelVideoRecorder *) 0x48341008
#2  0x40979332 in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
 
Thread 17 (Thread 1237683504 (LWP 11616)):
#0  0xffffe002 in ?? ()
No symbol table info available.
#1  0x080d1e3b in NuppelVideoRecorder::AudioThread(void*) 
(param=0x48341008)
    at NuppelVideoRecorder.cpp:1573
        nvr = (NuppelVideoRecorder *) 0x48341008
#2  0x40979332 in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
 
Thread 16 (Thread 1229290800 (LWP 11615)):
#0  0x08117b06 in CommDetect::CheckFrameIsBlank() (this=0x9121b60)
    at commercial_skip.cpp:110
        y = 0
        y_mult = 0
        x_mult = 1
        divisor = 129
        max_brightness = 120
        test_brightness = 80
        line_checked = {216, 118}
        test = true
#1  0x081179af in CommDetect::ProcessNextFrame(unsigned char*, long long) 
(
    this=0x9121b60, buf=0x8572d40 '\020' <repeats 200 times>...,
    frame_number=66) at commercial_skip.cpp:70
No locals.
#2  0x080d5290 in NuppelVideoRecorder::WriteVideo(Frame_*, bool, bool) (
    this=0x48341008, frame=0x494578a8, skipsync=false, forcekey=false)
    at NuppelVideoRecorder.cpp:2955
        tmp = 1770
        r = 0
        out_len = 1500
        frameheader = {frametype = 86 'V', comptype = 50 '2',
  keyframe = 6 '\006', filters = 0 '\0', timecode = 2119, packetlength = 
1500}
        xaa = 390
        freecount = 389
        compressthis = 1
        raw = 0
        timeperframe = 40
        planes = {0x8572d40 '\020' <repeats 200 times>...,
  0x8577d40 
"|~~~\202\200\200\200~|\200\200\200\202\200\200\177~\200\200\202|\200\200\200\204\200~\200\202\202\200~~\200\202\202\177\200\200\200\202\177\200\202\200\200\200~|\200\202\200|\200\200\200~\202\202\202\200\200~\200\200\200}\202\202\201\202~\200\201\201\200\202\177\200\200\200\200|\202\202\177\200\200~\200\200|\202~|~\200\200\202\202~}|\200\202\202\200{~\201\202\200|\200~~~\200|~~~~\200~~~~~\177\200}\200\200}~\201~~\200~~~\200\200|\200\200~\200~}\200\201}||~~\200\202~|~\202\202\203\200\177\200~\201\200\200\200~~~\200~\200}~~\201\202\202\200|\200\200~\202}~|\200~\200"...,
  0x8579140 
"\200\202~}~~~\200}~~~\200}\200\177}}}~\177}\200\202\200~\200\202\200\200~~~\200\200~~~}~\200\200}~~~\200\202~\200~\200~\202\200~}~\200\177~~\200\200\202\202\200\202\202\200\200~~\200}\200\200~~~\200\202\200\202\201~\202\200~\200\203\200\200\200\200\201\202\200\200\203\200\202~\200\202\200\202~\200\202\203\201{\200~~~~}\177~~~\200\200\200\200~\200\202\202~~~~\200\202}~\200\200~\200\200\200\200~\200{~}~~~\201\200\177\200\202\200\200\177\202\200\202\202~}}\177~~\200\200\200\200\200\202\203}\177}~\202\200~}~\177}\202~\200\177~\201\202\200\200\200"...}
        len = 30720
        fnum = 1582
        timecode = 2119
        buf = (unsigned char *) 0x8572d40 '\020' <repeats 200 times>...
        prev_bframe_save_pos = -1
        prev_keyframe_save_pos = -1
        wantkeyframe = false
#3  0x080d3b3b in NuppelVideoRecorder::doWriteThread() (this=0x48341008)
    at NuppelVideoRecorder.cpp:2308
        frame = {codec = CODEC_YUV, height = 128, width = 160, bpp = 0,
  frameNumber = 1582, buf = 0x8572d40 '\020' <repeats 200 times>...,
  len = 30720, timecode = 2119, is_field = 0}
        action = ACTION_VIDEO
        firsttimecode = 2119
#4  0x080d1e19 in NuppelVideoRecorder::WriteThread(void*) 
(param=0x48341008)
    at NuppelVideoRecorder.cpp:1564
        nvr = (NuppelVideoRecorder *) 0x48341008
#5  0x40979332 in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
 
Thread 15 (Thread 1220898096 (LWP 11614)):
#0  0xffffe002 in ?? ()
No symbol table info available.
#1  0x080a7fa2 in SpawnEncode(void*) (param=0x48341008) at tv_rec.cpp:33
        nvr = (class RecorderBase *) 0x48341008
#2  0x40979332 in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
 
Thread 14 (Thread 1211370800 (LWP 11613)):
#0  0xffffe002 in ?? ()
No symbol table info available.
#1  0x080a7fa2 in SpawnEncode(void*) (param=0x48341008) at tv_rec.cpp:33
        nvr = (class RecorderBase *) 0x48341008
#2  0x40979332 in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
 
Thread 14 (Thread 1211370800 (LWP 11613)):
---Type <return> to continue, or q <return> to quit---
#0  0xffffe002 in ?? ()
No symbol table info available.
#1  0x08097eb5 in RingBuffer::Read(void*, int) (this=0x833e9d0, 
buf=0x8369948,
    count=128000) at RingBuffer.cpp:894
        ret = -1
#2  0x080b621b in TVRec::DoReadThread() (this=0x8343570) at 
tv_rec.cpp:2008
        ret = 0
        buffer = 0x8369948 ""
#3  0x080b62cd in TVRec::ReadThread(void*) (param=0x8343570) at 
tv_rec.cpp:2023
        thetv = (TVRec *) 0x8343570
#4  0x40979332 in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
Couldn't get registers: No such process.
#0  0xffffe002 in ?? ()

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