Posts by wapvi

hello, I have an odd problem ever since running LE on my Minix with a exfat USB formatted hdd

.whe ever I try to stream a 4k hdr file from that particular drive I get infinite buffering. So decided to format the drive to ext4 as all the rest of my drives. Only issue I have to transfer all my files to another drive which is hooked to my router but I cant seem to find a correct way. I login to minix using sftp and my router using ftp, the router accept files just fine and the transfer is complete however the other way around doesnt work. What's the fastest way to do this ?

so, I'm running LE 8.90.4 on my minix u9h. 2 USB HDD are hooked to the box. I'm running osmc on my RPI 3 b+, both boxes are hooked to my Asus 86u via gbit ethernet. My problem is when running transmission and trying to save on one of the hdds attached to the minix, it hangs and when I look at journalctl xe I see the cifs mount from the minix gets timeout. Any reason why this is happening. It works sometimes and sometimes it doesnt. When using hdds hooked directly to my router USB ports all is well

whats the latest build for Minix u9h box?i was on kazak's but seems its no longer maintained..how can i update now?

so i need to convert my 8tb to EXT4 such a a hassle, what if im plugging it directly to my u9h which is running LE?would it still cause problems?

Hi,

i'm using Mininx uh9 as my media center while streaming from external and attached USBs i encounter some problems with buffering, if i play from an EXT4 formatted USB hdd everything runs smoothly over NFS share, howver if i play through an exfat external usb HDD it stutters then buffers then theres a loss of audio for some time and "source is too slow" message appears repeatedly.;Im running LE8.90.4

do we need to change the kodi sliders for contrasts or colors when playing hdr videos?

Quote from adamg

No you have completely misread what I said, problem is nothing to do with LibreELEC, it's a combination of a poor kernel and hardware, playing over NFS reduces a lot of CPU overhead which in-turn = better playback.

I guess that's a perfect workaround then. Nas through NFS plays smoothly no buffering. Btw any plans to incorporate .iso uhd playback?

Quote from sinancetinkaya

Wait a second, are you comparing ext4 and NTFS in different harddisks? Are you serious?

what now???i dont get what you are trying to ask

Quote from kszaq

Perhaps you should try disabling journal first:

Code

umount /dev/sdX1
tune2fs -o journal_data_writeback /dev/sdX1
tune2fs -O ^has_journal /dev/sdX1
e2fsck -f /dev/sdX1

i will try that and report back thanks

Quote from Tim_Taylor

I did not want to offend You.

Could You connect Your ext4 formated HDD to Your Xbox ?

Why not the easy way ?

Copy the contend of the HDD to backup spare(borrow a harddisk) - reformat ext4 to another format - solved and the FIAT becomes a Ferrari

you did not offend me Kodi on xbox is still in the early stage plus id rather have a dedicated box for streaming rather than using the xbox. i found a better solution since i have some HDD with stuff i dont need anymore i'll just plug the ext4 drives to my router (streaming is flawless from it no hiccups) and connect the NTFS drives directly to my Box. And btw, it has nothing to do with box capabilities, as im able to play jelly fish 140mbs files from the box's NTFS formatted USB hdd without hiccup only ext4 HDD is causing problems

EDIT: after your suggestion kszaq , i had a bunch of inode level 2 could be shorter errors, im sure it has something to do with disk errors?i clicked no then did hdparm

LibreELEC:~ # hdparm -t /dev/sda1

/dev/sda1:
 Timing buffered disk reads: 102 MB in  3.04 seconds =  33.54 MB/sec

Quote from Tim_Taylor

Yes it is.

Ok. Then hopefully uhd hdr gets in kodi build for Xbox so o can use my Xbox one x for that hope that'snot a Fiat as well

Quote from Tim_Taylor

True.

But most users want to buy FIAT and like to drive as a Porsche

My box cost 140 euros dunno how's that a fiat in today' tv boxes world?

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:~ #

Display More

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.

Display More

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