Buffer Overflows bei Aufnahmen

semi · 24. Oktober 2013

Hallo,

ich habe das Problem, dass während einer Aufnahme Buffer Overflows auftreten:

Oct 24 22:05:43 battista vdr: [10721] VDR version 2.0.3 started
Oct 24 22:05:43 battista vdr: [10721] switched to user 'vdr'
Oct 24 22:05:43 battista vdr: [10721] codeset is 'UTF-8' - known
Oct 24 22:05:43 battista vdr: [10721] found 28 locales in /usr/share/locale
Oct 24 22:05:43 battista vdr: [10721] loading /var/lib/vdr/setup.conf
Oct 24 22:05:43 battista vdr: [10721] loading /var/lib/vdr/sources.conf
Oct 24 22:05:43 battista vdr: [10721] loading /var/lib/vdr/diseqc.conf
Oct 24 22:05:43 battista vdr: [10721] loading /var/lib/vdr/scr.conf
Oct 24 22:05:43 battista vdr: [10721] loading /var/lib/vdr/channels.conf
Oct 24 22:05:43 battista vdr: [10721] loading /var/lib/vdr/timers.conf
Oct 24 22:05:43 battista vdr: [10721] loading /var/lib/vdr/commands.conf
Oct 24 22:05:43 battista vdr: [10721] loading /var/lib/vdr/reccmds.conf
Oct 24 22:05:43 battista vdr: [10721] loading /var/lib/vdr/svdrphosts.conf
Oct 24 22:05:43 battista vdr: [10721] loading /var/lib/vdr/keymacros.conf
Oct 24 22:05:43 battista vdr: [10722] video directory scanner thread started (pid=10721, tid=10722, prio=high)
Oct 24 22:05:43 battista vdr: [10723] video directory scanner thread started (pid=10721, tid=10723, prio=high)
Oct 24 22:05:43 battista vdr: [10721] registered source parameters for 'A - ATSC'
Oct 24 22:05:43 battista vdr: [10721] registered source parameters for 'C - DVB-C'
Oct 24 22:05:43 battista vdr: [10721] registered source parameters for 'S - DVB-S'
Oct 24 22:05:43 battista vdr: [10721] registered source parameters for 'T - DVB-T'
Oct 24 22:05:43 battista vdr: [10724] epg data reader thread started (pid=10721, tid=10724, prio=high)
Oct 24 22:05:43 battista vdr: [10724] reading EPG data from /var/cache/vdr/epg.data
Oct 24 22:05:43 battista vdr: [10721] probing /dev/dvb/adapter0/frontend0
Oct 24 22:05:43 battista vdr: [10721] creating cDvbDevice
Oct 24 22:05:43 battista vdr: [10721] new device number 1
Oct 24 22:05:43 battista vdr: [10721] DVB API version is 0x0509 (VDR was built with 0x0504)
Oct 24 22:05:43 battista vdr: [10721] frontend 0/0 provides DVB-S,DVB-S2,DSS with QPSK ("STV090x Multistandard")
Oct 24 22:05:43 battista vdr: [10727] section handler thread started (pid=10721, tid=10727, prio=low)
Oct 24 22:05:43 battista vdr: [10721] probing /dev/dvb/adapter1/frontend0
Oct 24 22:05:43 battista vdr: [10721] creating cDvbDevice
Oct 24 22:05:43 battista vdr: [10721] new device number 2
Oct 24 22:05:43 battista vdr: [10726] tuner on frontend 0/0 thread started (pid=10721, tid=10726, prio=high)
Oct 24 22:05:43 battista vdr: [10726] cTimeMs: not using monotonic clock - resolution is too bad (0 s 10000000 ns)
Oct 24 22:05:43 battista vdr: [10723] video directory scanner thread ended (pid=10721, tid=10723)
Oct 24 22:05:43 battista vdr: [10722] video directory scanner thread ended (pid=10721, tid=10722)
Oct 24 22:05:43 battista vdr: [10721] frontend 1/0 provides DVB-S,DVB-S2,DSS with QPSK ("STV090x Multistandard")
Oct 24 22:05:43 battista vdr: [10721] found 2 DVB devices
Oct 24 22:05:43 battista vdr: [10729] tuner on frontend 1/0 thread started (pid=10721, tid=10729, prio=high)
Oct 24 22:05:43 battista vdr: [10721] setting primary device to 1
Oct 24 22:05:43 battista vdr: [10730] section handler thread started (pid=10721, tid=10730, prio=low)
Oct 24 22:05:43 battista vdr: [10721] device 1 has no MPEG decoder
Oct 24 22:05:43 battista vdr: [10721] assuming manual start of VDR
Oct 24 22:05:43 battista vdr: [10721] SVDRP listening on port 6419
Oct 24 22:05:43 battista vdr: [10721] setting current skin to "lcars"
Oct 24 22:05:43 battista vdr: [10721] loading /var/lib/vdr/themes/lcars-default.theme
Oct 24 22:05:43 battista vdr: [10721] ERROR (lirc.c,45): /var/run/lirc/lircd: Datei oder Verzeichnis nicht gefunden
Oct 24 22:05:43 battista vdr: [10721] ERROR: remote control LIRC not ready!
Oct 24 22:05:43 battista vdr: [10721] switching to channel 1
Oct 24 22:05:43 battista vdr: [10721] setting watchdog timer to 60 seconds
Oct 24 22:05:43 battista vdr: [10721] OSD size changed to 720x480 @ 1
Oct 24 22:05:43 battista vdr: [10721] ERROR: no OSD provider available - using dummy OSD!
Oct 24 22:05:43 battista vdr: [10724] epg data reader thread ended (pid=10721, tid=10724)
Oct 24 22:05:44 battista vdr: [10721] timer 1 (2 2143-2225 'heute-journal') set to event Don 24.10.2013 21:45-22:15 (VPS:24.10. 21:45) 'heute-journal'
Oct 24 22:05:44 battista vdr: [10721] switching device 1 to channel 2
Oct 24 22:05:44 battista vdr: [10721] timer 1 (2 2143-2225 'heute-journal') start
Oct 24 22:05:44 battista vdr: [10721] Title: 'heute-journal' Subtitle: 'Wetter'
Oct 24 22:05:44 battista vdr: [10721] executing '/usr/lib/vdr/vdr-recordingaction before "/home/common/recordings/heute-journal/2013-10-24.21.43.2-0.rec"'
Oct 24 22:05:44 battista recordingaction: executing /usr/share/vdr/recording-hooks/R90.custom before recording /home/common/recordings/heute-journal/2013-10-24.21.43.2-0.rec as shell script
Oct 24 22:05:44 battista vdr: [10721] record /home/common/recordings/heute-journal/2013-10-24.21.43.2-0.rec
Oct 24 22:05:44 battista vdr: [10721] recording to '/home/common/recordings/heute-journal/2013-10-24.21.43.2-0.rec/00004.ts'
Oct 24 22:05:44 battista vdr: [10738] recording thread started (pid=10721, tid=10738, prio=high)
Oct 24 22:05:44 battista vdr: [10739] receiver on device 1 thread started (pid=10721, tid=10739, prio=high)
Oct 24 22:05:44 battista vdr: [10740] TS buffer on device 1 thread started (pid=10721, tid=10740, prio=high)
Oct 24 22:05:45 battista vdr: [10721] max. latency time 2 seconds
Oct 24 22:05:45 battista vdr: [10727] channel 2 (ZDF HD) event Don 24.10.2013 21:45-22:15 (VPS: 24.10. 21:45) 'heute-journal' status 4
Oct 24 22:05:52 battista vdr: [10739] i/o throttle activated, count = 1 (tid=10739)
Oct 24 22:05:55 battista vdr: [10739] buffer usage: 70% (tid=10738)
Oct 24 22:05:56 battista vdr: [10739] buffer usage: 80% (tid=10738)
Oct 24 22:05:58 battista vdr: [10739] buffer usage: 90% (tid=10738)
Oct 24 22:05:59 battista vdr: [10739] buffer usage: 100% (tid=10738)
Oct 24 22:05:59 battista vdr: [10739] ERROR: 1 ring buffer overflow (1 bytes dropped)
Oct 24 22:06:05 battista vdr: [10739] ERROR: 43243 ring buffer overflows (8129684 bytes dropped)
Oct 24 22:06:11 battista vdr: [10739] ERROR: 47885 ring buffer overflows (9002380 bytes dropped)
Oct 24 22:06:17 battista vdr: [10739] ERROR: 49525 ring buffer overflows (9310700 bytes dropped)
Oct 24 22:06:23 battista vdr: [10739] ERROR: 49739 ring buffer overflows (9350932 bytes dropped)

Dabei habe ich den VDR ohne ein einziges Plugin gestartet. Der VDR läuft auf meinem Server in einer virtuellen Maschine unter XEN. Weiterhin habe ich die aktuellen Pakete von E-Tobi unter Debian genutzt.

Der erste Gedanke war, dass mein Server nicht genug Performance hat (nur ein Intel Atom ...), aber mit tvheadend bekomme ich Aufnahmen ohne Fehler.

Hat noch wer einen Tip für mich?

Viele Grüße
Sebastian

jsffm · 24. Oktober 2013

Versuchs mal hiermit:

Diff

--- recorder.c.s        2012-09-22 13:53:57.000000000 +0200
+++ recorder.c  2013-09-06 21:46:11.309761095 +0200
@@ -10,7 +10,7 @@
 #include "recorder.h"
 #include "shutdown.h"


-#define RECORDERBUFSIZE  (MEGABYTE(20) / TS_SIZE * TS_SIZE) // multiple of TS_SIZE
+#define RECORDERBUFSIZE  (MEGABYTE(100) / TS_SIZE * TS_SIZE) // multiple of TS_SIZE


 // The maximum time we wait before assuming that a recorded video data stream
 // is broken:

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Ist vielleicht etwas übertrieben.

Buffer Overflows bei Aufnahmen

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