ftp speed decreases

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sgi
SamyGO Project Donor
Posts: 39
Joined: Mon Feb 02, 2015 5:09 pm

ftp speed decreases

Post by sgi »

When downloading PVR recorded files from my rooted h6470 (2120.0) with ftp, the
transfer sometimes decreases from initially 11+MBytes/s (100 MBit link) down to a few
hundred kBytes/s.

This might happen quickly after a few GBs have been transferred or it takes 50 or more
GB but sooner or later it happens. It is no sharp drop but merely a slow decrease.

I have done a lot of things to find out what's causing this including:

- stopping the transfer and starting it again
- changing the switch port
- changing the switch (to a managed one which tracks detailed port statistics)
- changing the cable
- pulling and inserting the cable (so the link gets renegotiated)
- stopping and restarting ftpd
- checking with top if there are any memory or cpu hogs
- check the log files for something unusual

nothing helps. The TV itself works as usual all the time -- no time lags or stuff like that.
telnet sessions works as usual. The only thing that helps is switching the TV off and on.
After that, ftp speed is back to 11+MBytes/s -- sometimes for a few seconds, sometimes
for half an hour.

Anybody else seeing this?
sectroyer
Official SamyGO Developer
Posts: 6305
Joined: Wed May 04, 2011 5:10 pm

Re: ftp speed decreases

Post by sectroyer »

expected. You have to reboot TV :)
I do NOT support "latest fw" at ALL. If you have one you should block updates on router and wait for it to STOP being "latest":)
If you want me to help you please paste FULL log(s) to "spoiler"/"code" bbcodes or provide link(s) to pasted file(s) on https://pastebin.com Otherwise "NO HELP"!!!
If you want root DISABLE internet access to your device!!!!
DO NOT EVER INSTALL FIRMWARE UPGRADE !!!!
sgi
SamyGO Project Donor
Posts: 39
Joined: Mon Feb 02, 2015 5:09 pm

Re: ftp speed decreases

Post by sgi »

sectroyer wrote:expected. You have to reboot TV :)
Hmm, any chance to elaborate what's behind this?
sectroyer
Official SamyGO Developer
Posts: 6305
Joined: Wed May 04, 2011 5:10 pm

Re: ftp speed decreases

Post by sectroyer »

sgi wrote:
sectroyer wrote:expected. You have to reboot TV :)
Hmm, any chance to elaborate what's behind this?
No problem. Let's make it LONG story :) It's samsung tv network bug. Samsung is OBLIGATED to fix it but they will NOT. If you push on them they will tell you that they will "consider fixing it in future products" :) We have been NEVER successful in making samsung fix even obvious bugs :)
I do NOT support "latest fw" at ALL. If you have one you should block updates on router and wait for it to STOP being "latest":)
If you want me to help you please paste FULL log(s) to "spoiler"/"code" bbcodes or provide link(s) to pasted file(s) on https://pastebin.com Otherwise "NO HELP"!!!
If you want root DISABLE internet access to your device!!!!
DO NOT EVER INSTALL FIRMWARE UPGRADE !!!!
sgi
SamyGO Project Donor
Posts: 39
Joined: Mon Feb 02, 2015 5:09 pm

Re: ftp speed decreases

Post by sgi »

sectroyer wrote:It's samsung tv network bug. Samsung is OBLIGATED to fix it but they will NOT.
Why should they? The crap is sold, so what...
Thanks for the insight! (Still wondering what they actually did
to "implement" such a bug ;-))
sectroyer
Official SamyGO Developer
Posts: 6305
Joined: Wed May 04, 2011 5:10 pm

Re: ftp speed decreases

Post by sectroyer »

sgi wrote:
sectroyer wrote:It's samsung tv network bug. Samsung is OBLIGATED to fix it but they will NOT.
Why should they? The crap is sold, so what...
Thanks for the insight! (Still wondering what they actually did
to "implement" such a bug ;-))
You can make some tests with scp I think it also happens there :)
I do NOT support "latest fw" at ALL. If you have one you should block updates on router and wait for it to STOP being "latest":)
If you want me to help you please paste FULL log(s) to "spoiler"/"code" bbcodes or provide link(s) to pasted file(s) on https://pastebin.com Otherwise "NO HELP"!!!
If you want root DISABLE internet access to your device!!!!
DO NOT EVER INSTALL FIRMWARE UPGRADE !!!!
sgi
SamyGO Project Donor
Posts: 39
Joined: Mon Feb 02, 2015 5:09 pm

Re: ftp speed decreases

Post by sgi »

sectroyer wrote:You can make some tests with scp I think it also happens there :)
I _think_ I tried this as well, no luck. Will test again in about 3 weeks...

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