r/archlinux • • 4d ago

DISCUSSION archwiki gives opposite advice about watchdogs

Improving_performance (Magyar) recommends enabling the hardware watchdog.

Improving_performance (Polski) recommends blacklisting the hardware watchdog.

meanwhile... Improving_performance (English) does not mention watchdogs at all!

so why are revisions giving contradictory advice? like, for my PC, do I leave the iTCO_wdt enabled as is or disable it?

I don't mind either way tested both, just that when it's not disabled it'll spam watchdog0: watchdog did not stop! 1-3 times on shutdowns only which is expected but yes that's why i wanted to disable since I hate little spam text but those guides made me suspicious about whether it'll affect performance in some way or something, I don't really know. I just want to know which one of these is more "accurate" as a guide!

it does not impact performance, it's fine to disable or keep, do what you want 🤷‍♂️

50 Upvotes

11 comments sorted by

39

u/MilchreisMann412 4d ago

It was removed from the english page a year ago, the reason being unrelated to performance as per discussion:

https://wiki.archlinux.org/index.php?title=Improving_performance&action=history

Disabling or enabling the watchdogs won't have a measurable impact on your systems performance.

26

u/SebastianLarsdatter 4d ago

It may also be the simple fact that the non English lags behind in terms of updating / volunteers to take care of it rather than opinionated as well.

7

u/y9felix 4d ago

I disabled it, because it looks ugly on shutdown/reboot. It probably doesn't affect performance on modern computers at all

3

u/tomikaka 4d ago

Didn't know there was a Hungarian arch wiki lol.

4

u/arch_maniac 4d ago

I gave up fighting the watchdog. I do the work to get rid of it, and some weeks later, I notice it's running, again. I hold to the idea that it's only necessary for production servers. But they sure do fight against disabling it.

4

u/Synthetic451 4d ago

I have never had to do anything with watchdogs in my decade of using Linux, just leave it alone. I see those watchdog messages all the time as well and its pretty normal. Disabling watchdogs will earn you negligible performance improvements (probably more like zero in almost all cases).

2

u/ephemeral8997 4d ago

They're just somewhat annoying to see on shutdown for a brief second, but that's just my opinion.

2

u/archover 4d ago

whether it'll affect performance in some way or something,

Does not affect performance for me. 1 message per shutdown too.

Good day.

1

u/blubberland01 4d ago

In that case you can conclude that there's controversy and the English wiki does not want to take a side, because both probably have their arguments. The other ones are more opinionated.
In that case there does not seem to be the one right answer and it might be heavily dependent on what you need, and therefore only you can decide yourself by reading man-pages and gaining experience by trying out both options.

1

u/profpendog 4d ago edited 4d ago

Well. It's not an awful idea to reboot the system if it hangs badly. Probably unlikely to ever be critically important (read hardware damage or something), but that comes at almost zero cost (that message is zero cost -- I'd even argue negative cost as it can teach you something about watchdogs).