# Klippy.log variable descriptions?

**URL:** <https://klipper.discourse.group/t/klippy-log-variable-descriptions/23506>\
**Category:** General Discussion\
**Created:** [May 18, 2025, 8:13pm UTC](https://klipper.discourse.group/t/klippy-log-variable-descriptions/23506 "2025-05-18T20:13:29Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Mandias](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@Mandias](https://klipper.discourse.group/u/Mandias)\
**Post date:** [May 18, 2025, 8:13pm UTC](https://klipper.discourse.group/t/klippy-log-variable-descriptions/23506/1 "2025-05-18T20:13:29Z")

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Are the descriptions for all klippy.log variables available somewhere? I haven’t found them in the documentation so far. Some of them are self-explanatory, but others have cryptic names like “srtt”. Also, is it possible to modify what’s included in the log? It would be nice to have the MCU’s CPU temperature, for example, to monitor for over-heating.

**Stats 235030.7:**  
gcodein=0  
**mcu:**  
mcu\_awake=0.008  
mcu\_task\_avg=0.000018  
mcu\_task\_stddev=0.000018  
bytes\_write=570833  
bytes\_read=839549  
bytes\_retransmit=9  
bytes\_invalid=0  
send\_seq=20333  
receive\_seq=20333  
retransmit\_seq=2  
srtt=0.001  
rttvar=0.000  
rto=0.025  
ready\_bytes=0  
upcoming\_bytes=0  
freq=11999931  
sd\_pos=204030  
**heater\_bed:**  
target=80  
temp=83.5  
pwm=0.000  
sysload=1.57  
cputime=7214.527  
memavail=130036  
print\_time=5546.529  
buffer\_time=2.184  
print\_stall=0  
**extruder:**  
target=255  
temp=254.9  
pwm=0.307

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<div class="post-metadata">

**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\
**Post date:** [May 19, 2025, 5:35am UTC](https://klipper.discourse.group/t/klippy-log-variable-descriptions/23506/2 "2025-05-19T05:35:59Z")

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Unfortunately not. This has been on my to-do list for quite some time, but I have not gotten around to doing it yet.

> [@Mandias](#):
>
> It would be nice to have the MCU’s CPU temperature, for example, to monitor for over-heating.

See [Configuration reference - Klipper documentation](https://www.klipper3d.org/Config_Reference.html#builtin-micro-controller-temperature-sensor)

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<div class="post-metadata">

**Author:** ![Sineos](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/sineos/32/18_2.png) [@Sineos](https://klipper.discourse.group/u/Sineos)\
**Post date:** [May 22, 2025, 7:52pm UTC](https://klipper.discourse.group/t/klippy-log-variable-descriptions/23506/3 "2025-05-22T19:52:23Z")

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[Klippy.log - Statistics and Interpretation](https://klipper.discourse.group/t/klippy-log-statistics-and-interpretation/23563/1)

Just for you 😉

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\
**Post date:** [June 22, 2025, 5:52am UTC](https://klipper.discourse.group/t/klippy-log-variable-descriptions/23506/4 "2025-06-22T05:52:47Z")

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Closed on June 22, 2025, 5:52am UTC

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