What's new

Slowly running out of memory - RT-AC1900P (3.0.0.4.384_32799)

  • SNBForums Code of Conduct

    SNBForums is a community for everyone, no matter what their level of experience.

    Please be tolerant and patient of others, especially newcomers. We are all here to share and learn!

    The rules are simple: Be patient, be nice, be helpful or be gone!

Bill Waggoner

Occasional Visitor
I've started to investigate a problem that requires me to forceably reboot the router every so often, once a month or so. I suspected that it was running out of memory because that's what the ASUS app was showing on my iPad. A bit before the last time I rebooted the app showed 78% memory utilization but I had noticed much lower (50%) previously. I hadn't been paying much attention so I decided to watch more closely.

To do this I created a script which ssh's into the router and does a cat /proc/meminfo and puts the results into a CSV file. I loaded that into Excel and, sure enough, the memfree is slowly going down.

What is interesting is what is going up. Both Slab and SUnreclaim are both climbing. Sounds like a memory leak but I haven't figured out what is leaking yet.

Anyone have any ideas? Have you seen this too?

I haven't rebooted since the first few days of monitoring but I will maybe next week to see what happens.
 
Look into /proc/slabinfo to see what’s growing there.
 
The similar problem exists on RT-AC87U since last update (3.0.0.4.382_50702). The slabinfo shows high and increasing slab -
Code:
kmalloc-64        126227 133504     64   64    1 : tunables    0    0    0 : slabdata   2086   2086      0
Suspect a memory leak issue.
 
I believe that I've stopped the memory problem. Free memory is no longer disappearing and the SLAB numbers are fairly stable.

What I did was decline (actually, Withdraw) both the Trend and Adaptive QoS permissions. I wasn't actively using either one anyway.

Would it be useful to figure out which was causing the issue?
 
I believe that I've stopped the memory problem. Free memory is no longer disappearing and the SLAB numbers are fairly stable.

What I did was decline (actually, Withdraw) both the Trend and Adaptive QoS permissions. I wasn't actively using either one anyway.

Would it be useful to figure out which was causing the issue?

Useful to ASUS, so let them do it! :)

OE
 
Similar threads
Thread starter Title Forum Replies Date
S High memory usage in GT-AXE16000 ASUSWRT - Official 4

Similar threads

Latest threads

Support SNBForums w/ Amazon

If you'd like to support SNBForums, just use this link and buy anything on Amazon. Thanks!

Sign Up For SNBForums Daily Digest

Get an update of what's new every day delivered to your mailbox. Sign up here!
Top