Kodi Community Forum

Hi,

Since I am using my bitstream ability in XBMC I notice dropping connections.
Somtimes it was stopping from the image, but most of the times the audio just stops for a short period (receiver does not detect an audio track) and then it comes back again.

Currently I am searching to see if it is caused by network streaming. Tried ssh, samba and NFS, all the same problem.
Now I wil try to do it by an USB drive. If that also has the problem I can conclude for sure it is my HTPC.

Update:
I used the same movie, only played from an USB drive. Gues what, no glitches at all.
However what is strange is that the network is gigabit, capable of doing 14 megabyte hands down. A movi is like 7 megabyte.
Is this a problem on my HTPC that is cannot progress this data so fast...

With normal DTS and 5.1 I have no problems if I stream via the network

Network test:

Code:
htpc01:~ # iperf -s -p 65000

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

Server listening on TCP port 65000

TCP window size: 85.3 KByte (default)

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

[  4] local 192.168.178.18 port 65000 connected with 192.168.178.11 port 46617

[ ID] Interval       Transfer     Bandwidth

[  4]  0.0-10.0 sec  1.07 GBytes   921 Mbits/sec

[  5] local 192.168.178.18 port 65000 connected with 192.168.178.11 port 46624

[  5]  0.0-10.0 sec  1.08 GBytes   923 Mbits/sec

Shows that it could not be the structural network speed, I will look for a plotted longer period test to see if there are some strange drops

Okey, small update:

Memusage normal XBMC:
2051184 available
1691556 used
82,5 (percentage used)

When I have a ssh open to my htpc and i give a continues input (example in "top" push the arrow up button) then the sound drops immediately. After releasing the button the sound reappears.

So apparently it is not the Server which is causing issues, but it is pointed down to the HTPC itself.

The HTPC is running a complete KDE desktop with on top XBMC.
The mem in the htpc is 2gb
Swap is not in use, but is present

It has an atom proc D525 (Sapphire Edge HD2)
http://www.sapphiretech.com/presentation...id=1&leg=0

Your iperf output looks normal. You should benchmark how long it takes to copy a movie from your network share to your local drive. You should get at least a couple tens of megabytes per second to be on the safe side. Are you streaming from a NAS?

Copy from a mounted NFS Share:

Code:
┌──────────────────────── Copy ────────────────────────┐ 

│ Source                                               │

│ _______________________.iso                          │

│ Target                                               │

│ /root/Download/Test/_______________________.iso      │

│    [                                        ]  26%   │

│ ETA 0:18.09 (27.86 MB/s)                             │

│                                                      │

│                  [ Skip ]  [ Abort ]                 │

└──────────────────────────────────────────────────────┘

Copy from a SMB share (same file):

Code:
┌──────────────────────── Copy ────────────────────────┐ 

│ Source                                               │

│ _______________________.iso                          │

│ Target                                               │

│ /root/Download/Test/_______________________.iso      │

│    [                                        ]  26%   │

│ ETA 0:18.09 (9.04 MB/s)                              │

│                                                      │

│                  [ Skip ]  [ Abort ]                 │

└──────────────────────────────────────────────────────┘

But what surprises me more is the activity of XBMC during standby (no music or movie is played:
Resource status: CPU 100%
Memory status: 650Megabyte of 2Gigabyte

About the cpu, what is left of CPU power goes to XBMC, I see it fluctuating between 25% to 75% (other processes take 25% (xorg, kwin, ksysguard)
I have vdpau enabled and the nvidia driver is loaded Huh

Later I will check to see when I am using SMPlayer if a movie is just using the 20% CPU, coz then I at least know IF something is incorrect in the config of XBMC.

SMPlayer: 13% CPU - VDPAU
XBMC - Movie: 85% CPU - VDPAU question Huh

?
XBMC - No Movie: 27% CPU - VDPAU question Huh

?

SMPplayer (same movie as XBMC, only no DTS output since smplayer is not capable of doing that):

Code:
top - 14:59:33 up  5:13,  4 users,  load average: 0.75, 0.94, 1.77

Tasks: 127 total,   1 running, 126 sleeping,   0 stopped,   0 zombie

%Cpu(s): 19.0 us,  6.2 sy,  0.0 ni, 73.0 id,  0.0 wa,  0.0 hi,  1.7 si,  0.0 st

KiB Mem:   2051184 total,  1922936 used,   128248 free,    16144 buffers

KiB Swap:  4192252 total,       32 used,  4192220 free,  1317068 cached

  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND

3055 htpc01    20   0  345m  76m  26m S  11.9  3.8   0:49.21 mplayer2

1687 htpc01    20   0  636m  85m  51m S   8.6  4.3  20:48.36 kwin

1366 root      20   0  154m  56m  29m S   3.3  2.8   8:57.98 Xorg

3040 htpc01    20   0  434m  49m  30m S   1.0  2.5   0:16.24 smplayer2

    8 root      -2   0     0    0    0 S   0.3  0.0   0:03.15 rcu_kthread

2861 root      20   0     0    0    0 S   0.3  0.0   0:27.79 kworker/u:24

3051 root      20   0     0    0    0 S   0.3  0.0   0:00.85 kworker/0:0

3104 root      20   0 17924 1612 1144 S   0.3  0.1   0:03.58 top

3105 root      20   0 96656 4300 3144 S   0.3  0.2   0:31.65 sshd

3163 root      20   0 17936 1632 1148 R   0.3  0.1   0:00.33 top

XBMC (same movie with DTS hd output):

Code:
top - 15:17:43 up  5:31,  4 users,  load average: 2.82, 1.16, 1.12

Tasks: 128 total,   2 running, 126 sleeping,   0 stopped,   0 zombie

%Cpu(s): 50.0 us, 40.8 sy,  0.0 ni,  0.0 id,  0.0 wa,  0.0 hi,  9.2 si,  0.0 st

KiB Mem:   2051184 total,  1909736 used,   141448 free,    15856 buffers

KiB Swap:  4192252 total,       32 used,  4192220 free,  1222620 cached

  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND

3214 htpc01    20   0 1105m 190m  53m S  85.0  9.5   0:57.54 xbmc.bin

1687 htpc01    20   0  640m  85m  51m R   9.2  4.3  22:29.09 kwin

1366 root      20   0  141m  51m  24m S   2.6  2.6   9:34.70 Xorg

2861 root      20   0     0    0    0 S   1.0  0.0   0:29.90 kworker/u:24

3104 root      20   0 17924 1612 1144 S   0.7  0.1   0:11.58 top

3105 root      20   0 96656 4300 3144 S   0.3  0.2   0:33.40 sshd

3163 root      20   0 17936 1632 1148 R   0.3  0.1   0:04.97 top

    1 root      20   0 43676 4356 2000 S   0.0  0.2   0:01.26 systemd

    2 root      20   0     0    0    0 S   0.0  0.0   0:00.00 kthreadd

    3 root      20   0     0    0    0 S   0.0  0.0   0:00.02 ksoftirqd/0

    5 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 kworker/0:0H

    7 root       0 -20     0    0    0 S   0.0  0.0   0:00.00 kworker/u:0H

XBMC No movie:

Code:
top - 15:16:28 up  5:30,  4 users,  load average: 0.57, 0.55, 0.94

Tasks: 128 total,   2 running, 126 sleeping,   0 stopped,   0 zombie

%Cpu(s): 34.9 us,  9.1 sy,  0.0 ni, 44.6 id,  0.3 wa,  0.0 hi, 11.1 si,  0.0 st

KiB Mem:   2051184 total,  1910988 used,   140196 free,    15328 buffers

KiB Swap:  4192252 total,       32 used,  4192220 free,  1312484 cached

  PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND

3214 htpc01    20   0  983m 101m  48m R  27.0  5.1   0:13.38 xbmc.bin

1687 htpc01    20   0  640m  85m  51m S  19.1  4.3  22:17.81 kwin

1366 root      20   0  141m  51m  24m S   5.6  2.6   9:31.16 Xorg

2861 root      20   0     0    0    0 S   0.7  0.0   0:29.35 kworker/u:24

    8 root      -2   0     0    0    0 S   0.3  0.0   0:03.93 rcu_kthread

3104 root      20   0 17924 1612 1144 S   0.3  0.1   0:11.28 top

3105 root      20   0 96656 4300 3144 S   0.3  0.2   0:33.28 sshd

3163 root      20   0 17936 1632 1148 R   0.3  0.1   0:04.64 top

3183 root      20   0     0    0    0 S   0.3  0.0   0:00.12 kworker/0:0

Have you made sure that the VPDAU codec is actually being used when you play movies? (see the codec info OSD).

About the transfer speeds, it looks like you should be using NFS if you can, although there's definitely something wrong with your server/NAS because you should be getting way better speeds (unless you use some old USB drives).

I don't think it is my server, copying to windows goes with 50megabytes per second, same file.
So it is limited to the HTPC.

Btw how or where should I see this, during a movie pressing on "i" for info is never saying vdpau??
However in the config menu I enabled vdpau and vaapi!

But this is probably not enough or...

Update 22:07:
After a start of XBMC out of KDE and direct starting a movie (bluray) I get a proc usage of 35 percent. After switching to an other bluray I get 85% after switching back to the first bluray which gave me 35 percent this one also rises to 80+ percent.
Seems there is something strange with XBMC!!!
Can it be something wrong with XBMC?

I will at leats build the latest GIT tonight (Currently I am on the first GIT RC of Frodo)

Code:
From https://github.com/xbmc/xbmc

   4b21225..14689e2  master     -> origin/master

From https://github.com/xbmc/xbmc

* [new tag]         Frodo_rc2  -> Frodo_rc2

First, rewinding head to replay your work on top of it...

Fast-forwarded master to 14689e236b72348cae153b0fb755a0aae500ea0b.

Going to test latest XBMC first, this GIT sounds interesting
https://github.com/xbmc/xbmc/commit/7826...43b02fd7f6

You should bring up the OSD that contains a lot of technical information. Somewhere on the right side there's a piece of text starting with "dc:" (I think, could be "vc:"). The text after it should contain "vdpau" if VDPAU is actually being used.

Are you certain you have the correct drivers installed (you'll need Nvidias proprietary drivers in order to use VDPAU). Also make sure you have compiled XBMC with VDPAU support (if you didn't compile it yourself this is probably not the issue).

XBMC is with VDPAU support,
It shows during the compilation (did double check last night during config phase of new build)

NVidia drivers are correct installed 310.19 (otherwise I could not use them in MPlayer.
Going to test version latest GIT now.

Code:
configure: creating ./config.status

install prefix            /usr/local

source path               .

C compiler                /usr/bin/ccache gcc

ARCH                      x86 (generic)

big-endian                no

runtime cpu detection     yes

yasm                      yes

MMX enabled               yes

MMX2 enabled              yes

3DNow! enabled            yes

3DNow! extended enabled   yes

SSE enabled               yes

SSSE3 enabled             yes

AVX enabled               yes

CMOV enabled              yes

CMOV is fast              yes

EBX available             yes

EBP available             yes

debug symbols             yes

strip symbols             yes

optimize for size         no

optimizations             yes

static                    no

shared                    yes

postprocessing support    yes

new filter support        yes

network support           yes

threading support         pthreads

safe bitstream reader     yes

SDL support               yes

Sun medialib support      no

libdxva2 enabled          no

libva enabled             yes

libvdpau enabled          yes

AVISynth enabled          no

frei0r enabled            no

gnutls enabled            no

libaacplus enabled        no

libass enabled            no

libcdio support           no

libcelt enabled           no

libdc1394 support         no

libdirac enabled          no

libfaac enabled           no

libgsm enabled            no

libmodplug enabled        no

libmp3lame enabled        no

libnut enabled            no

libopencore-amrnb support no

libopencore-amrwb support no

libopencv support         no

libopenjpeg enabled       no

libpulse enabled          no

librtmp enabled           no

libschroedinger enabled   no

libspeex enabled          no

libstagefright-h264 enabled    no

libtheora enabled         no

libutvideo enabled        no

libv4l2 enabled           no

libvo-aacenc support      no

libvo-amrwbenc support    no

libvorbis enabled         no

libvpx enabled            no

libx264 enabled           no

libxavs enabled           no

libxvid enabled           no

openal enabled            no

openssl enabled           no

zlib enabled              yes

bzlib enabled             yes

Code:
config.status: executing depfiles commands

====================================

  XScreenSaver support      :  no

  PNG image support         :  yes

  OGG Vorbis sound support  :  no

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

  Enabled screensavers:

  - Cyclone                 :  no

  - Euphoria                :  yes

  - Field Lines             :  no

  - Flocks                  :  no

  - Flux                    :  no

  - Helios                  :  no

  - Hyperspace              :  no

  - Lattice                 :  no

  - Plasma                  :  yes

  - Skyrocket               :  no

  - Solar Winds             :  yes

====================================

Code:
------------------------

  XBMC Configuration:

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

  Debugging:    Yes

  Profiling:    No

  Optimization: Yes

  SWIG Available:       Yes

  JRE Available:        Yes

  Doxygen Available:    Yes

  Crosscomp.:   No

  target ARCH:  no

  target CPU:   no

  OpenGL:       Yes

  ALSA:         Yes

  DBUS:         Yes

  VDPAU:        Yes

  VAAPI:        Yes

  CrystalHD:    No

  VDADecoder:   No

  VTBDecoder:   No

  OpenMax:      No

  Joystick:     Yes

  XRandR:       Yes

  GOOM:         No

  RSXS:         Yes

  ProjectM:     Yes

  Skin Touched: No

  X11:          Yes

  Bluray:       Yes

  TexturePacker:Yes

  MID Support:  No

  ccache:       Yes

  ALSA Support: Yes

  PulseAudio:   No

  HAL Support:  No

  DVDCSS:       Yes

  Google Test Framework Configured:     No

  Avahi:        Yes

  Non-free:     Yes

  ASAP Codec:   No

  MySQL:        Yes

  Webserver:    Yes

  libssh support:       Yes

  libRTMP support:      Yes

  libsmbclient support: Yes

  libnfs client support:Yes

  libafpclient support: No

  AirPlay support:      Yes

  AirTunes support:     No

  UPnP support:         Yes

  Optical drive:        Yes

  libudev support:      Yes

  libusb support:       No

  libcec support:       No

  libmp3lame support:   Yes

  libvorbisenc support: Yes

  libcap support:       Yes

  additional players:   No

  External FFmpeg:      No

  PVR add-ons:          Yes

  prefix:       /usr

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

Oh and btw you mean "On-Screen Video Diagnostics":

Code:
On Screen Video Diagnostics, or Codec Info, can be displayed when a video is playing by pressing 'o', or the corresponding control on your remote.

Will be back in a 30 mins

Okey, good update:
VDPAU is working.

Update of XBMC did not solve the problem, but what was more surprising I had no problems when I sued my Logitec Dinovo Mini, but when I used my ipod with XBMC "official Remote" the CPU went through the sky. AFter shutdown only using the logitech went fine, no CPU higher than 35% when playing in full HD and DTS HD. (No stuttering or whatever)

To later test again, first switch with the remote IPOD made the CPU go nuts again. As a result I installed Constailation again. On my IPOD and checked with the alternative remote, and what happens ----- all went fine and still low CPU.

So I am almost 100% sure of the fact that it is the App. For the moment I will test with Constail. Any Idea if I need to file a report on the app forum?

FurthermoreI change from samba to NFS since it is faster and minimizes chances on disruption 5mb versus 50mb Wink

That's great. I think the screen I was talking about was "On Screen Video Diagnostics" yes (I don't have XBMC near me during the holidays so I can't check).

OKey, I deff found the problem.

Since I rebuilded all my databases again (NFS Smaba, grrrr...) took a while before I could really test again.
So I was playing with my keyboard (dinovo and everything went OK whole afternoon).

Then I thought lets just test step by step. So I let the xbmcremote app connect. And what did I see.... An immediate raise of my CPU with 40% (max it could get) it became a total of 80% and slugish again.
Restarted XBMC problem solved again.

So it should be the app. Btw I also see a big data tranfer on iptraf (not sure about that, but something is not ok in the app). Constailation is working fine.

Ps. I make this a cross post for the developer of xbmc remote app since I like the app.
http://forum.xbmc.org/showthread.php?tid=128279&page=73

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