Memory degrading on Nexx WT3020

For Developers
1

Hi,

Can`t find the reason why RAM degrades. Used htop, never can find a clue. It always been free about 30 MB. The problem started about month ago. Router stops responding until restart about two weeks due to memory loss.
I build image myself and upgrade every month or so. No changes in configuration. Has anyone experencied something like this on rt2880?
Can not find what is "eating" RAM

TYA

2

I have the same problem. I think that @tobiaswaldvogel found the cause:

3

Thanks. I will try to build new one when the fix is implemented. Will report how it goes

4

Sounds like the same issue. If you don't see any processes consuming the memory then it is a kernel memory leak.
In my case the reboot was even after only 5-10 hours. The impact seems to depend also on the connected devices, in my case it was a Dyson fan, which seemed to make it even worse.

Right now I'm running 3 days without any new memory reported by the kernel memory leak detector, so it seems that it is solved for good with my patch.

5

I just build trunk with the fix. Will report how it goes

6

Till now it looks OK - uptime 12h

7

Felix addressed the problem with commit https://git.openwrt.org/?p=openwrt/staging/nbd.git;a=commitdiff;h=30b73fa5d8ab69514184f72e25a866e62e6cbbcb on his staging repo and will merge it soon to the openwrt/master
I tested this patch successfully and closed the PR, as my patch is not required anymore.

So you can expect that problem to be gone in a few days on the openwrt trunk or you can cherry pick this commit into you local copy.

8

Fixed in commit:

TYA

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9

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