[Dobyken]

Using either the built in LiveTV function (myth:user:password@ipaddress) or Mythbox my Windows XP machine (xbmc beta 3 & 4) stutters badly even on SD material after 10 seconds and appears to be a buffering issue. Pausing livetv does not fix the issue. All video library files play fine including HD content. Using the SiliconDust player I can watch HD streams just fine outside of XBMC. All media and tuners are located on my Mythbuntu 10.04 server.

While playing SD material on the XP box in LiveTV the network bandwidth runs about 5%, CPU usage 10%, and vcpu was showing about 4%. XBMC running on the linux box works great for all sources so the only issue is streaming from the Linux box to the XP box. Network is 100mbit wired.

I looked all through the XBMC setup and guisettings.xml and did not find a buffer setting. Since the HDHomerun streams fine I would think there's not an issue with my general network settings or that would stutter too. The ATI 4650 video card can be ruled out because I can play HD files and HDHomerun streams just fine. It's not the CPU because it's only using 10% and it shouldn't be a bandwidth issue. I did spend about an hour searching for previous solution but didn't see any that were just related to live tv. Log file shows a lot of warnings for buffer underuns.

Logfile
http://pastebin.com/FW96W631

[dteirney]

Full debug log please.

[NiPiN³]

Running TVHeadend on a server using a FireDTV and a PVR-150 and also experience image stutter after about 5 minutes (audio starts to stutter later). This happens on both tuners (Digital and Analog), with and without vdpau.

Stopping (x) and reconnecting to the channel seems to reset it, as does switching channels.

Switching the frequency on the server using "ivtv-tune -f 768" does not solve the problem and it continues to stutter on the other channel/frequency. The frequency change takes longer than normal, probably the buffer that causes that.

Please let me know which logs you want.


XBMC - cpu and mem during stutter:

processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 107
model name : AMD Athlon™ Dual Core Processor 4850e
stepping : 2
cpu MHz : 1800.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy 3dnowprefetch
bogomips : 3600.11
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc 100mhzsteps

processor : 1
vendor_id : AuthenticAMD
cpu family : 15
model : 107
model name : AMD Athlon™ Dual Core Processor 4850e
stepping : 2
cpu MHz : 1800.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
apicid : 1
initial apicid : 1
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow extd_apicid pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy 3dnowprefetch
bogomips : 3600.11
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc 100mhzsteps

MemTotal: 1543504 kB
MemFree: 1162944 kB
Buffers: 29728 kB
Cached: 173380 kB
SwapCached: 0 kB
Active: 138204 kB
Inactive: 166612 kB
Active(anon): 102052 kB
Inactive(anon): 196 kB
Active(file): 36152 kB
Inactive(file): 166416 kB
Unevictable: 0 kB
Mlocked: 0 kB
HighTotal: 663112 kB
HighFree: 371132 kB
LowTotal: 880392 kB
LowFree: 791812 kB
SwapTotal: 2723636 kB
SwapFree: 2723636 kB
Dirty: 72 kB
Writeback: 0 kB
AnonPages: 101704 kB
Mapped: 47332 kB
Shmem: 544 kB
Slab: 20796 kB
SReclaimable: 10060 kB
SUnreclaim: 10736 kB
KernelStack: 1592 kB
PageTables: 1636 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 3495388 kB
Committed_AS: 414908 kB
VmallocTotal: 122880 kB
VmallocUsed: 63448 kB
VmallocChunk: 43516 kB
HardwareCorrupted: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 4096 kB
DirectMap4k: 65528 kB
DirectMap4M: 843776 kB

Server - cpu and mem during stutter:

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel® Core™2 Quad CPU Q9550 @ 2.83GHz
stepping : 10
cpu MHz : 2003.000
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dts tpr_shadow vnmi flexpriority
bogomips : 5665.91
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel® Core™2 Quad CPU Q9550 @ 2.83GHz
stepping : 10
cpu MHz : 2003.000
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dts tpr_shadow vnmi flexpriority
bogomips : 5666.01
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel® Core™2 Quad CPU Q9550 @ 2.83GHz
stepping : 10
cpu MHz : 2003.000
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
apicid : 2
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dts tpr_shadow vnmi flexpriority
bogomips : 5666.02
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel® Core™2 Quad CPU Q9550 @ 2.83GHz
stepping : 10
cpu MHz : 2003.000
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
apicid : 3
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dts tpr_shadow vnmi flexpriority
bogomips : 5666.03
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

MemTotal: 8186336 kB
MemFree: 6305852 kB
Buffers: 41376 kB
Cached: 184596 kB
SwapCached: 0 kB
Active: 114928 kB
Inactive: 188580 kB
Active(anon): 77600 kB
Inactive(anon): 188 kB
Active(file): 37328 kB
Inactive(file): 188392 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 2104508 kB
SwapFree: 2104508 kB
Dirty: 108 kB
Writeback: 0 kB
AnonPages: 77580 kB
Mapped: 1471584 kB
Shmem: 208 kB
Slab: 71060 kB
SReclaimable: 36360 kB
SUnreclaim: 34700 kB
KernelStack: 1560 kB
PageTables: 6284 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 6197676 kB
Committed_AS: 2179576 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 309932 kB
VmallocChunk: 34359294960 kB
DirectMap4k: 10688 kB
DirectMap2M: 8376320 kB

[NiPiN³]

Whoops, what am I doing in the windows sections?!