Nlbwmon out of memory (yet another...)

[aboaboit]

Continuing the discussion from What's the meaning of the following nlbwmon error messages [solved]:

I have the same settings, I restart nlbwmon nightly and... the wretched error message is still there!
My 4040 still has about 60MB RAM free, so I guess I could raise the buffer size still further but it's already a ludicruous amount!

Anything else to check?

[jow]

The buffer size is capped by a global sysctl which nlbwman cannot raise by itself. Did you adjust the net.core.rmem_max sysctl as well? See the following thread for details:

Is there an int overflow in nlbwmon?

Ended up making the following changes and it all seems to be working fine now: # /etc/config/nlbwmon option refresh_interval '10s' option netlink_buffer_size '67108864' # cat /etc/sysctl.d/99-user.conf net.core.wmem_max=67108864 net.core.rmem_max=67108864 The overflow or some other issue might still exist for very high speed links, but the changes above worked around whatever issues I experienced before.

[aboaboit]

@jow

The buffer size is capped by a global sysctl which nlbwman cannot raise by itself. Did you adjust the net.core.rmem_max sysctl as well?

Nope, I missed that, thanks!
Current values are 180224, I'll raise them and check in a couple of days.