OpenWrt 21.02.1 First service release

Not to mention the fact that wrt3200acm goes from swconfig to DSA when installing 21.02 so there are simply no settings from any previous system config to restore settings from.

Only the venom and mamba had a size change forced.

Is there any improvement in wifi comparing to 21.02.0? It was much worse than stock or Padavan. I would like very much to return to openwrt...

Disappointing. I had WDS problems, too. I went all the way back to 19.07.8 to avoid them. I guess I'll wait for 21.02.2 before upgrading.

First of all - thanks for all the great work on this release!
We use OpenWRT for more than 15 years now.

There's one thing I I would like to see: some more transparency on the question whether the obvious
software flow offloading issue will be worked on or not in the near future?

https://bugs.openwrt.org/index.php?do=details&task_id=3373

We're currently running on 1/3 of possible WAN speed, thus we would like to make a decision soon if we should replace our Archer C2600 by new device only because of this.

To me this looks like a regression introduced by some change in the past - so wouldn't it be possible to identify this regression and revert / change it into a working solution again?

If there's absolutely no light at the end of the tunnel ... what would be a possible replacement for a C2600 to run as Wifi router behind a Gbit WAN connection?
Some device that doesn't suffer from the flow offloading issue, but can deliver higher routing speed without?

2 Likes

I don't know much about the first part of your question, but after reading this forum thread i had a better understanding of everything that is involved from a performance perspective. And i saw some recommendations in the replies that could be of interest.
https://forum.openwrt.org/t/so-you-have-500mbps-1gbps-fiber-and-need-a-router-read-this-first/90305/

If you look further up this thread, i had the mamba version Linksys WRT1900AC v1, and i was advised to force upgrade using the factory.img. It worked for me. I don't know if the sysupgrade image would of also worked if i forced it, but I just made good doucmentation and screen caps, then reconfigured everything. The only thing i missed was that i must have had software unloading enabled, and it is disabled by default after the update do to some issues previously mentioned. Hope this helps. See anomeome comment about the only 2 versions that had a partition change. But there is still the DSA change to contend with.

I consistently had problems with my c2600, see post below. I had been running OpenWRT for years and finally just gave up and reverted to the stock, tp-link firmware and haven't had issues. How is this latest service release for you? Any crashes in the logs? Intermittent wifi problems?

None whatsoever, however its early days. My uptime is only 5days 13hrs with 21.02.1.

I've detailed my finding here: OpenWrt 21.02.1 First service release - #24 by otnert

Also adding to that post: I've moved from Samba4 to ksmbd to resolve my free space issue! Now have 12.1MB free space to install extra packages. Had some teething issues with ksmbd, but was Windows related.

Since I only use adguardhome, I can't feel the difference between the two versions.
and the speed is too slow in LAN when i transfer files from mac to iphone.

Does anyone understand the significance of things being grayed out on the new Devices tab? For example, the WAN, which in Interfaces is eth0.2 and most certainly active. Here, eth0.2 is a VLAN (perhaps that's a C7v2 thing), for some reason, and pointing to eth0, but they're both grayed out, which is misleading and possibly a mistake. Yes, you can click Configure, and everything works.

2 Likes

Cudy WR2100 and Archer C7 v2 working well! Thanks!

Speaking of Archer C7 v2, on that router I'm noticing dramatically less free memory after a while than seen consistently on 19.07 and earlier.

It used to be that it had about 70000 free. Now, allowing for the same time to pass (a matter of hours), it drops into the 35000-40000 area. And that is with the same configuration as before! I wonder if what I asked in the preceding post is related.

This memory usage comes as a surprise, since I know someone with another router (not a C7v2 but a comparable one) who only had a 5000 drop relative to before. I expected to see about the same here.

I think it's the newer kernel and features utilized. I noticed consistent freemem drops across hardware platforms when jumping from 18 -> 19 -> 21.

1 Like

I don't recall noticing this from 18 to 19, but when comparing 19 to 21, how can the Archer be so different than the comparable one I mentioned, for example? Shouldn't they both have dropped similarly, relative to what they had each been, instead of what happened? The fact that one was extremely different makes me think something went wrong on the upgrade, despite it working, particularly in light of the weirdness I show in the screenshot.

It would be interesting to know if anyone else with a C7v2 has a Devices tab looking like that.

My C7V2: only Accesspoint, no luci (webservice) running
# uptime
18:20:09 up 9 days, 23:27, load average: 0.00, 0.00, 0.0

# free
total used free shared buff/cache available
Mem: 123400 51248 55136 240 17016 38952

My C7 v2 Devices tab looks the same.

And...nothing wrong with the install...it does have less available memory.

FWIW, I have a C7 v2, but used as a AP only. I'm seeing if anything a bit less memory usage. I used to normally get 50ish free to 30-40ish used. Currently on 21.02.1, I'm seeing about 60 free to 45ish used.
Again, that's dumb AP use, disabling a few services and interfaces, not regular router/AP use.

Sadly, I'm seeing wifi issues, more than before (still troubleshooting to see if it's something non-firmware) and on 5ghz as well as 2.4ghz. 5ghz used to be very solid, with 2.4ghz has been very problematic for some years now. Changed from the -ct drivers to the non -ct, problems worse.

CT drivers seemed to increase memory usage for me (AP/router).

I solved the frequent wireless disconnects I was getting by upping the value in Station inactivity limit

Have you tried kmod-ath10k-ct-smallbuffers instead of kmod-ath10k-ct ? That may help bring down the memory usage.

wifi down
opkg update
opkg remove kmod-ath10k-ct
opkg install kmod-ath10k-ct-smallbuffers
reboot
1 Like