# Wrapper file stopped logging during benchmarking? when in general it will stop? **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [July 6, 2023, 9:52am UTC](https://forum.inductiveautomation.com/t/wrapper-file-stopped-logging-during-benchmarking-when-in-general-it-will-stop/75982 "2023-07-06T09:52:21Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![hewking32](https://avatars.discourse-cdn.com/v4/letter/h/b5ac83/32.png) [@hewking32](https://forum.inductiveautomation.com/u/hewking32)\ **Post date:** [July 6, 2023, 9:52am UTC](https://forum.inductiveautomation.com/t/wrapper-file-stopped-logging-during-benchmarking-when-in-general-it-will-stop/75982/1 "2023-07-06T09:52:21Z")
Hi I just noticed that wrapper file stopped logging (i checked its size was 0) so i went to system logs and got a hint that my benchmarking code probably caused an issue so i removed it and wrapper is happy again. 1 Do you know when in general wrapper file will stop logging? are system logs the only way to get a clue to debug? 2 I am checking potentially long running scripts triggered cyclically from the gateway using code below - can you see any reason it could cause the issue? I remember nano time is a lot more consistent and @pturmel mentioned in the past. > from java.lang import System > > start = System.nanotime() > > # your code > > end = System.nanotime() > print 'Took {} nanosecodes'.format(end-start) ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [July 6, 2023, 11:31am UTC](https://forum.inductiveautomation.com/t/wrapper-file-stopped-logging-during-benchmarking-when-in-general-it-will-stop/75982/2 "2023-07-06T11:31:46Z")
Don't use print. Use a logger instance with `.debugf(...)` and set the DEBUG level when you need it. The wrapper will rotate to new log files if configured to do so, based on time or size. I recommend the latter. Ensure there's enough room for that size times the number to keep. ---
**Author:** ![hewking32](https://avatars.discourse-cdn.com/v4/letter/h/b5ac83/32.png) [@hewking32](https://forum.inductiveautomation.com/u/hewking32)\ **Post date:** [July 6, 2023, 2:23pm UTC](https://forum.inductiveautomation.com/t/wrapper-file-stopped-logging-during-benchmarking-when-in-general-it-will-stop/75982/3 "2023-07-06T14:23:17Z")
> [@hewking32](#): > > System.nanotime() loggers work beautifully - is there space limit somewhere in the config how big internal database can grow? can you please advise where to find reference information on System.nanotime() - i noticed i had to correct it to System.nanoTime() - is it part of SDK documentation? ---
**Author:** ![hewking32](https://avatars.discourse-cdn.com/v4/letter/h/b5ac83/32.png) [@hewking32](https://forum.inductiveautomation.com/u/hewking32)\ **Post date:** [July 6, 2023, 2:35pm UTC](https://forum.inductiveautomation.com/t/wrapper-file-stopped-logging-during-benchmarking-when-in-general-it-will-stop/75982/4 "2023-07-06T14:35:02Z")
i also noticed that when the function runs as gateway cyclic event it takes about 100ms (bad database code) but when i run the same function from script console it takes about 300ms - any idea why is that so different and how the code executes diferently? ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [July 6, 2023, 3:10pm UTC](https://forum.inductiveautomation.com/t/wrapper-file-stopped-logging-during-benchmarking-when-in-general-it-will-stop/75982/5 "2023-07-06T15:10:54Z")
> [@hewking32](#): > > System.nanoTime() - is it part of SDK documentation? It is part of [java itself](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/System.html). ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [July 6, 2023, 3:12pm UTC](https://forum.inductiveautomation.com/t/wrapper-file-stopped-logging-during-benchmarking-when-in-general-it-will-stop/75982/6 "2023-07-06T15:12:39Z")
> [@hewking32](#): > > any idea why is that so different and how the code executes diferently? When you run from the script console, there is extra traffic: designer=\>gateway, gateway=\>DB, DB=\>gateway, gateway=\>designer. The latter two carry the result set. If it is big, encoding and compressing will be significant.