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#26 2019-08-11 20:39:01

seth
Member
Registered: 2012-09-03
Posts: 12,020

Re: Problem in playing videos from local storage.

It the CPU somewhat of a limiting factor or does it linger at a moderate level nevertheless?
Output of "mount"? (w/ the external HDD mounted)

Obviously try video playback from another FS on a USB device.

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#27 2019-08-11 21:08:15

ImaginePhoenix
Member
Registered: 2019-08-08
Posts: 17

Re: Problem in playing videos from local storage.

Output of mount with my external USB HDD connected is given here https://pastebin.com/AztMJ2fT

Played the same video in VLC from a pen-drive which is vfat. Didn't notice any lag or choppiness.

dd output is while playing the video from pen-drive,

6061666+1 records in
6061666+1 records out
3103573078 bytes (3.1 GB, 2.9 GiB) copied, 73.7109 s, 42.1 MB/s

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#28 2019-08-11 21:12:37

seth
Member
Registered: 2012-09-03
Posts: 12,020

Re: Problem in playing videos from local storage.

Mounted realtime, so there's no indication for writes.
Check "dmesg -w" on whther the disk throws I/O errors while playing (though I doubt it) and maybe format a usb key to NTFS and see whether that triggers the same playback issues.

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#29 2019-08-12 07:33:31

ImaginePhoenix
Member
Registered: 2019-08-08
Posts: 17

Re: Problem in playing videos from local storage.

I have checked 'dmesg -w' output already with the external HDD connected, there was no error message

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#30 2019-08-12 11:11:18

seth
Member
Registered: 2012-09-03
Posts: 12,020

Re: Problem in playing videos from local storage.

We still lack a cross test (whether a NTFS formatted usb key shows the same behavior) and the usb autosuspend test.

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#31 2019-08-12 18:45:13

ImaginePhoenix
Member
Registered: 2019-08-08
Posts: 17

Re: Problem in playing videos from local storage.

I tested on a NTFS format pen-drive and noticed no lagging. Here is the dd output

6061666+1 records in
6061666+1 records out
3103573078 bytes (3.1 GB, 2.9 GiB) copied, 72.0982 s, 43.0 MB/s

Does this anyhow mean that there's something wrong with my USB HDD? I never faced such issues with my external hard disk although I have used it with several other Linux distros as well

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#32 2019-08-12 20:30:30

seth
Member
Registered: 2012-09-03
Posts: 12,020

Re: Problem in playing videos from local storage.

I/O or USB errors would show in dmesg, unless you're absolutely sure there're none, "dmesg | curl -F 'f:1=<-' ix.io"
The particular NTFS might have been heavily fragmented (esp. if the disk was or is completely full) - you could defrag it on windows.

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#33 2019-08-13 08:24:40

ImaginePhoenix
Member
Registered: 2019-08-08
Posts: 17

Re: Problem in playing videos from local storage.

I have noticed this messages in the output of 'dmesg -w'

-[sdb] Write Protect is off
-[sdb] Mode Sense: 23 00 00 00
-[sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA

This is the output of  "dmesg | curl -F 'f:1=<-' ix.io" - http://ix.io/1Rut

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#34 2019-08-13 12:48:26

seth
Member
Registered: 2012-09-03
Posts: 12,020

Re: Problem in playing videos from local storage.

There's no error.
You could try the behvior on the main kernel but my money is on defrag.

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