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+--- Thread: memory size for files created by script (/showthread.php?tid=2559)
memory size for files created by script - SigmaTec - 02.04.2020
Hi all,
I would like to know the maximum memory size available if I want to create files with the Lua functions "io.open/write".
Then, in what default directory will these files be created, and how can I specify another one?
Thank's in advance fior your help.
RE: memory size for files created by script - admin - 02.04.2020
Please explain what are you trying to do and what kind of data do you want to write into these files.
RE: memory size for files created by script - SigmaTec - 02.04.2020
I want to save, in a simple way, in a file, (without sql for example) the variations of values of objects of type "string".
RE: memory size for files created by script - admin - 02.04.2020
What is the purpose of this, what do you want to do with this file?
RE: memory size for files created by script - SigmaTec - 02.04.2020
to use it as a log file I can link to an e-mail for example.
RE: memory size for files created by script - Daniel - 02.04.2020
Why don't you use storage?
RE: memory size for files created by script - SigmaTec - 02.04.2020
because i have a lot of small strings to record :
12 shorts strings even 10 seconds, during 30 days...
RE: memory size for files created by script - admin - 02.04.2020
If each string is 20 bytes long then your whole log will be at least 60MB in size. Most probably you won't be able to send that using e-mail.
As for writing into files you should not write to SD card often as it can quickly kill it. One solution is to write to a temporary file then move it to SD by the end of the day by using a scheduled script. There's a slight disadvantage that this file can be lost if the device is rebooted. You should also take care of deleting old log files.
RE: memory size for files created by script - SigmaTec - 02.04.2020
Ok, thanks for the reply on the file size: I will therefore only send the useful records by e-mail (error reports in my case), after the complete file.
The SD card you are talking about is internal to the LM?
If yes :
I was just thinking of using a USB key to save the log file, to avoid using too much internal memory.
Do you have an example script that copies a file to an USB key (I don't know this point on LM)?
RE: memory size for files created by script - admin - 02.04.2020
Yes, LM uses a microSD card internally. As for USB, have a look at this: https://forum.logicmachine.net/showthread.php?tid=678
RE: memory size for files created by script - SigmaTec - 02.04.2020
ok, many thank's, I will try this.
Do you think it would be better for me to use an SQL database for recording my data?
RE: memory size for files created by script - admin - 02.04.2020
Depends on what kind of data you want to record. "shorts strings" does not say much.