Build recommendation for WRT3200ACM?

Installing and Using OpenWrt
41

In general, there is some increase in memory consumption during the first hours of the router, but the memory level should then stabilise.

Collectd should not consume memory in an increasing matter (unless there is a memory leak in the rather new current collect version.)

More likely is that something causes extensive logging (or something like that), which will write files to /tmp ramdisk, consuming RAM.

You might check "df -h" a few times and try to see if that memory consumption is file based (growing /tmp) or just a memory leak somewhere.

42

In my log does always have entrys of "DHCPACK(br-lan) + DHCPINFORM(br-lan)" for my laptop which is connected via Wifi (Win 7, Broadcom Wifi).
It never stops, so its filling my log every 5-8 minutes. That might be the cause ?

I have stopped collectd and now it seems to be fine.
I will check with the command you posted and let you know after a few hours.
Thanks.

43

Should not be, as that system log has a pre-defined buffer size. It is not a normal file.

44

The used memory at /tmp doesnt seem to change at all...

root@OpenWrt:~# df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root                 6.3M      6.3M         0 100% /rom
tmpfs                   250.6M      2.5M    248.1M   1% /tmp
/dev/ubi0_1              53.9M    732.0K     50.4M   1% /overlay
overlayfs:/overlay       53.9M    732.0K     50.4M   1% /
ubi1:syscfg              70.2M    372.0K     66.2M   1% /tmp/syscfg
tmpfs                   512.0K         0    512.0K   0% /dev

After ~1hour

    root@OpenWrt:~# df -h
    Filesystem                Size      Used Available Use% Mounted on
    /dev/root                 6.3M      6.3M         0 100% /rom
    tmpfs                   250.6M      2.5M    248.1M   1% /tmp
    /dev/ubi0_1              53.9M    732.0K     50.4M   1% /overlay
    overlayfs:/overlay       53.9M    732.0K     50.4M   1% /
    ubi1:syscfg              70.2M    372.0K     66.2M   1% /tmp/syscfg
    tmpfs                   512.0K         0    512.0K   0% /dev

Maybe free mem goes down because of pppoe usage ?

45

I'd verify with Linksys whether or not those are essentially the same antennas sold with the WRT AC Series. Minus the blue aesthetics on the antenna, they're quite similar to the WRT AC Series antennas.

46

I was reading the following review from smallnetbuilder and it's not so positive...
https://www.smallnetbuilder.com/wireless/wireless-reviews/32774-linksys-high-gain-antennas-reviewed

I guess the best would be if I try to get a replacement of Linksys and than sell my WRT3200acm.
But i'm not sure which router i should buy next... I really want good LEDE support and a decent 2.4ghz coverage/performance. Maybe a Netgear R7800 ?
I'm going to stay away from any Marvel Wifi device... Lesson learned !

47

WiFi antennas don't broadcast in a way most people think... they broadcast on an axis, with some broadcasting horizontally, other vertically, and you base which you buy based upon your environment and what one's trying to accomplish

48

Linksys/Belkin are actively working on the wireless issues:

https://community.linksys.com/t5/Wireless-Routers/WRT32x-and-WRT3200ACM-WiFi-Issues/td-p/1246764/page/102

49

I dont see anyone mentioning bad 2.4ghz coverage/performance.
Im still thinking that my wifi module could be faulty. My signal values are still pretty bad, compared to my other router. I will test a RT-N66U tomorrow.

50

Free mem still goes down after 2 days 10h.
htop reports that dnsmasq has the highest memory using of 0.6%.
I still dont know what's causing this behaviour...
mem_wrt

51

Take srceenshots (or copy paste from htop) and compare after a few hours, which process has increased memory consumption.

htop has settings to see also the kernel threads. It may well be some driver (e.g. mwlwifi) that takes more memory.

52

htop

htop2

53

Please, have a look at these posts at OpenWrt's forum, and see if it matches your issue:
https://forum.openwrt.org/viewtopic.php?pid=369495#p369495
https://forum.openwrt.org/viewtopic.php?pid=369501#p369501
https://forum.openwrt.org/viewtopic.php?pid=369506#p369506
Also, what version of the mwlwifi drivers are you using?

54

I flashed yesterday my own WRT3200ACM with r5740-012d20eebe and the free memory has remained stable at 59% for the first 22 hours of uptime.

55

:frowning:
well mine keeps going down... are you using pppoe as well ?

Sounds like the same problem...
kmod-mwlwifi 4.9.72+10.3.4.0-20171214-1

After 2d 17h:

htop
htop1348×689 31.2 KB

56

with 4.14

image

57

I feel kinda damned... Got my old router back in business right now.
Tomorrow i'll try a new build.

58

http://community.linksys.com/t5/Wireless-Routers/WRT3200ACM-and-WRT32X-Firmware-update-available-1-11-2018/td-p/1260723

59

@Kherby Check out this:
https://pages.corifeus.com/github/lede-insomnia/index.html
https://cdn.corifeus.com/lede/17.01.4/targets/mvebu/generic/

It is basically, the latest LEDE version, except addons like fix for Apache, MariaDB 5.5.58, NodeJs 9 and the Wifi is always the latest. You can easily configure the radar:
https://pages.corifeus.com/github/lede-insomnia/docs/linksys-wrt-radar-detection.html

See on the bottom here links:

2 Likes
60

If you try with a new build, you might flash without keeping settings, so that you configure manually from scratch, just to avoid carrying any possible problems with you.