Posts by wapvi

Quote from sinancetinkaya

wapvi normally NTFS is the slowest on Linux due to bad ntfs-3g module.

May be you should try increase read ahead setting for ext4 mounting options of that harddisk in fstab.

But before you that, check the read performance of your disk first. Here is mine 31 mb/s

Code

##############################################
#                  LibreELEC                 #
#            https://libreelec.tv            #
##############################################

LibreELEC (community): 8.2.2.3 (S905.arm)
LibreELEC:~ # df -h
Filesystem                Size      Used Available Use% Mounted on
devtmpfs                805.8M    125.4M    680.4M  16% /dev
/dev/mmcblk1p1          511.7M    133.0M    378.8M  26% /flash
/dev/mmcblk1p2            6.7G    268.1M      6.4G   4% /storage
/dev/loop0              125.5M    125.5M         0 100% /
tmpfs                   907.2M         0    907.2M   0% /dev/shm
tmpfs                   907.2M      7.5M    899.7M   1% /run
tmpfs                   907.2M         0    907.2M   0% /sys/fs/cgroup
tmpfs                   907.2M      1.9M    905.3M   0% /var
tmpfs                   907.2M      4.0K    907.2M   0% /tmp
/dev/sda5               149.0G      4.0G    145.0G   3% /var/media/sda5-usb-ST916031_0AS_536
LibreELEC:~ # hdparm -t /dev/sda5

/dev/sda5:
 Timing buffered disk reads:  94 MB in  3.00 seconds =  31.30 MB/sec
LibreELEC:~ #

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mine reads at 23

/dev/sdb1:

Timing buffered disk reads: 66 MB in 3.04 seconds = 21.72 MB/sec

LibreELEC:~ # hdparm -t /dev/sdb1

/dev/sdb1:

Timing buffered disk reads: 70 MB in 3.04 seconds = 23.06 MB/sec

LibreELEC:~ # hdparm -t /dev/sdb1

/dev/sdb1:

Timing buffered disk reads: 72 MB in 3.02 seconds = 23.82 MB/sec

LibreELEC:~ #

Quote from veronicasmithen03

No, he didn't misread. I think you misunderstood. He is saying that using USB at all, has "overhead". With ext4, it is a journaled filesystem and has its own overhead as well in addition to the USB overhead. Playing via NFS from an ext4 partition won't have the same problem because you are eliminating the USB stack overhead itself. Plus the ext4 journal on the NFS server isn't being updated via LAN - that happens on the host PC which has the ext4 drive.

Either format your USB stick as ext3 or ext2, or setup NFS properly. ext4 is not needed unless you plan to keep the files long term - you don;t need the "journal" of ext4, so go with ext3. You area also talking about UHD/HDR content which has extremely high bitrates. Depending on your USB stick, it may not actually meet the read speed requirements regardless of the OS/filesystem you are using. I prefer to use SD cards in a tiny USB2/3 adapter (aliexpress) - I get much more consistent performance compared to gambling with USB chipsets.

These machines are not high power devices at all and cannot be compared to even the slowest of PC's from the last few generations.

Setup NFS and your problems are gone.

Thanks for the clarification, my NFS share is working fine with high bitrates uhd files. Also ntfs disk is working fine and since I have a 8tb hdd I don't I can back up to reformat as ext3 or any other format. Is there a way to fix this without ?

Quote from adamg

Both of these have been covered before, we really should make an FAQ for these kinds of questions.

AFS/Samba don't work well on these boxes, transfer via NFS if you can and don't use wireless.

LibreELEC is not the reason or cause for slow transfers, it's a combination of a poor kernel and slow hardware, when transferring over USB the kernel stack has to handle not just the usb stack but also the ext4fs which adds an overhead to the CPU which impacts performance in Kodi which is why you see the slow down and stutter, the file system format becomes irrelevant when transferring over NFS the overheads are then handled on the remote side.

I think you misread what I said or maybe I just said it wrong so let me try again. When playing a uhd file from my ext4 formatted hdd nfs share everything is fine. However, when pluggingthe drive to my minix u9 and playing the same file it results in stuttering and out of sync audio. Seems like libreelec doesn't read fast enough from an ext4 had which is odd. I keep getting source is too slow to read but a ntfs formatted drive plays his files just fine.

for some reason libreelec doesnt like ext4 external HDDs, on NAS it works fine but direct play results in stutter and slow downs

from my log I see a lot of got msgq_abort or msgo_is_error return true dunno what causes that but it' frequently popping up

Quote from Tim_Taylor

Me to.

But ext4 formated external HDD is no standard. I never formated external drives with ext4, using NTFS or exFat is working fine.

Lessons learned:

External USB-HDD in ext4 format connected @amlogic box is to slow to play high bitrate UHD video

Well even my ext4 formatted hdds that are attached to my rpi and router struggle. Dunno if it's the box or the installation

anyone using an ext4 usb HDD? I have been having issues playing uhd files be it .mt2s or mkv, they play for 1mn then they get choppy and the audio cuts off. I tried some other files on my NTFS usb HDD and they work fine. Then I downloaded the jellyfish 120mbs files and as I suspected, they play fine from the ntfs HDD but gets choppy/slow motion effect on ext4. Is this a known issue? Wanted to upload logs but the system gives me error using ssh or kodi to upload the logs I think they are too big.

Edit: from the log it appears that audio is also causing a lot of problems

Ubuntu Pastebin

looks like it's nothing to do with mts2 files as I play them fine. Thing is I have 2 hdds attached both have UHD rips one of them is ntfs the other is ext4 and seems like the one formatted in ntfs doesn't have any buffering/stuttering whereas the ext4 drive has all those issues when playing uhd files be it mob or mts2. 1080p files are fine though

Quote

11:50:19.117 T:4100153360 NOTICE: Loaded settings file from special://xbmc/sys$

$ncedsettings.xml are...

<?xml version="1.0" encoding="utf-8$

<advancedsettings>

<showexitbutton>false</showexitbu$

<remotedelay>1</remotedelay>

<samba>

<clienttimeout>30</clienttimeou$

</samba>

<cache>

<buffermode>1</buffermode>

<buffermode>1</buffermode>

<memorysize>52488000</memorysiz$

<readfactor>5.0</readfactor>

</cache>

</advancedsettings>

11:50:19.117 T:4100153360 WARNING: CSettingsManager: missing version attribute

11:50:19.127 T:4100153360 NOTICE: Loaded settings file from special://profile/$

11:50:19.127 T:4100153360 NOTICE: Contents of special://profile/advancedsettin$

<advancedsettings>

<cache>

<buffermode>1</buffermode>

<memorysize>50</memorysize>

<readbufferfactor>4</readbuffer$

</cache>

</advancedsettings>

11:50:19.127 T:4100153360 WARNING: CSettingsManager: missing version attribute

why do i have two advancedsettings?and which one is kodi using?

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i'm gonna try play both mt2s and mkv of the same movie and see if it makes a different. i have mounted nfs shares succesfully now i need to figure out how to automatically mount it on the OS as openlec guide to do so got deleted from their wiki

its a no go even using a USB HDD results in slowdowns

Quote from extremeaudio

By Blu Ray menu you mean you are playing a blu ray disc or rip? Does it work for UHD as well as regular BDs? And in case you mean discs, what are you using, an external blu ray drive?

When play a full UHD BR disk rip u can play the index object file to choose chapters or extras

Quote from Pelican

The adapter itself is good enough, you can see if you connect it to a pc or laptop.

I can get speed above 300 Mbps measured with iperf3 on my boxes.

But I use it to an S905X box. Why do you need it for S912?

3D MVC is work in progress as i know. Don't expect the result soon.

for some reason i get connexion refused when doing iperf3

Quote from mmax

Have you realy 2500000 cache??? This is only 2.5MB very low sized cache for 4k and too for hdd you need buffermode 1 ...

When your minix have 2G RAM maybe half used best cache is around 100-512MB 512000000 ....

And second check hw codecs support...

Lol I missed 2 zeros that' why I was getting all stuttering thanks for helping. Apparently it did the trick I'm gonna play some more videos and update.

I have been asking around many people and forums and i havent found a solution or a cause to my problems.

I have a u9 running Libreelec as android gives me blackscreen on my Samsung SUHD tv once i select 4k60khz resolution.

The problem is when playing some UDH BR mts2 or remuxes i get slowdowns and audio cutoffs.

I have this problem playing directly from a 4tb EXT4 HDD plugged to the Minix or through Gbit LAN. i can't figure out whats wrong.

anyway to troubleshoot?i have modified advancedsettings.xml and 2500000 on the cache settings and 4 for read factor. 1080p files are working fine as are some UHD files

Quote from bubblegum57

with the card in the box. From windows, browse to the \\ip address\update drop the tar file in there. then reboot

Not sure from Ubuntu,

Thanks. Worked

Btw the Blu-ray menu for uhd blurays work great

guys i removed the sd card to put put the update on it but it won't let me as it says owner is root??I'm on Ubuntu 15 and the box with switched off before removing it