Re: Tiny Core v17.0 upgrade issues

[Stefann]

So.. still running at 15:00; that means 30hrs runtime without crash

So, to summarize....
TC15:
- including kext: usb-serial-6.6.8-tinycore.tcz
- recompile full application
- run application with "every second 812byte read from /dev/ttyUSB0; baudrate 11520"
- no crash over multiple month

TC17:
- including kext: usb-serial-6.18.2-tinycore.tcz
- recompile full application
- run application with "every second 812byte read from /dev/ttyUSB0; baudrate 11520"
- 4..6x tested, always crashes, mostly after about 15hrs; always within 24hrs

TC17:
- including kext: usb-serial-6.18.2-tinycore.tcz
- SAME application, NO recompile
- run application with disabled read from /dev/ttyUSB0 by configuration constant
- 1x tested, no crash after 30hrs

Now...
This does NOT proof that the read-action is the rootcasue because earlier experiments did show that "more general load" makes the crashing earlier.

What I now have done:
- modify application code
- same "every second 812byte read from /dev/ttyUSB0; baudrate 11520"
- but close device and re-open after every 15minutes
- started at 16:00 European time

If this keeps running than I think its demonstrated that usb-serial-6.18.2-tinycore.tcz has an issue with "reading long time without intermediate closing"

fingers crossed

[patrikg]

Have you consider the BIOS with USB energy saving.

[Stefann]

I doubt my 2008 board has that.
But..... isn't that only applicable while idle? the computer is never idle but in 24/7 use.