[GCC 7.2 BUILD] Optimized TP-Link Archer C7 V2 AC1750 LEDE Firmware


#857

Yes, I noticed about 30% more in performance (checked with netperf util).

Thats what my kernel log shows:

[0.000000] Clocks: CPU:1000.000MHz, DDR:760.000MHz, AHB:380.000MHz, Ref:40.000MHz
[0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 3822520893 ns
[0.000005] sched_clock: 32 bits at 500MHz, resolution 2ns, wraps every 4294967295ns
[0.008512] Calibrating delay loop... 498.89 BogoMIPS (lpj=2494464)

Wright now, I'm not using @r00t firmware, I'm using latest LEDE snapshot.


#858

is this the method you used to overclock it, from this thread?


I see people that bricked them in the process of overclocking, after flashing breed u-boot...


#859

Yes.

In my case, I had no problems. Working like a charm.


#860

idk why mine isnt overclocking then, strange...i mean breed is there and keeps the settings, just the kernel isnt accepting them or something. Interesting.


#861

Updated today, and still working:

[    0.000000] Linux version 4.9.91 (buildbot@builds) (gcc version 7.3.0 (OpenWrt GCC 7.3.0 r6510-0f1a148) ) #0 Sat Mar 31 17:31:42 2018
[    0.000000] MyLoader: sysp=00601021, boardp=00501023, parts=00000000
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019750 (MIPS 74Kc)

[    0.000000] Clocks: CPU:1000.000MHz, DDR:760.000MHz, AHB:380.000MHz, Ref:40.000MHz
[    0.000000] clocksource: MIPS: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 3822520893 ns
[    0.000005] sched_clock: 32 bits at 500MHz, resolution 2ns, wraps every 4294967295ns
[    0.008511] Calibrating delay loop... 498.89 BogoMIPS (lpj=2494464)

#862

Maybe I’ll try reflashing


#863

can you show all your kernel modules? maybe theres something im missing in my build.


#864

Here comes,

root@AP:~# opkg list-installed | grep -i kmod
kmod-ath - 4.9.91+2017-11-01-4
kmod-ath10k - 4.9.91+2017-11-01-4
kmod-ath9k - 4.9.91+2017-11-01-4
kmod-ath9k-common - 4.9.91+2017-11-01-4
kmod-cfg80211 - 4.9.91+2017-11-01-4
kmod-gpio-button-hotplug - 4.9.91-2
kmod-ip6tables - 4.9.91-1
kmod-ipt-conntrack - 4.9.91-1
kmod-ipt-core - 4.9.91-1
kmod-ipt-nat - 4.9.91-1
kmod-lib-crc-ccitt - 4.9.91-1
kmod-mac80211 - 4.9.91+2017-11-01-4
kmod-nf-conntrack - 4.9.91-1
kmod-nf-conntrack6 - 4.9.91-1
kmod-nf-ipt - 4.9.91-1
kmod-nf-ipt6 - 4.9.91-1
kmod-nf-nat - 4.9.91-1
kmod-nf-reject - 4.9.91-1
kmod-nf-reject6 - 4.9.91-1
kmod-nls-base - 4.9.91-1
kmod-ppp - 4.9.91-1
kmod-pppoe - 4.9.91-1
kmod-pppox - 4.9.91-1
kmod-slhc - 4.9.91-1
kmod-usb-core - 4.9.91-1
kmod-usb-ehci - 4.9.91-1
kmod-usb-ledtrig-usbport - 4.9.91-1
kmod-usb2 - 4.9.91-1
root@AP:~#

#865

Hello .

I have a problem and would like to know what happens.
I have a ./fslb file that works perfectly on ar71xx AC 1750 with Latest Chaos Calmer Release - OpenWrt 15.05.1

But now I've upgraded the router to LEDE with gcc 7.3 and the file does not work.

Error
Without chmod I do not have permission.

With chmod + x fslb or chmod 777 fslb there is no error, however ./fslb not found.
./fslb not found
with cmd ls o fslb is in the directory.
What happened ?


#866

Have you upgraded to this specific community release or to an official release available on downloads.openwrt.org?


#867

i fixed it, after making my frequency setting changes, rather than pressing restart i just unplugged the router and it booted normally!!


#868

have you seen any real world improvement after overclocking to 1000 mhz in comparison to the old value?


#869

you know ever since i added a few things to my build, i was getting better performance as it was, but now that i have the overclock engaged im getting another 10-20% better on download. i was only getting 115 mbps download tops to start with on this router, now since my firmware and the breed overclocking my download is 135 mbps.


#870

Yes, about a 30% in performance.


#871

What's your max download? 135Mbps max is terrible for this router. It should be capable of 800Mbps-1Gbps with no need to overclock if you look at a review like this:
https://www.smallnetbuilder.com/wireless/wireless-reviews/32498-tp-link-archer-c7-v2-reviewed


#872

You can view some benchmarks here:


#873

Tested from my overclocked AP, connected via SSH to my AP Archer C7 v2:

192.168.1.2 (My AP Archer C7 v2 OC - Wifi + Ethernet)
192.168.1.1 (LEDE x86/x64 Router - only Ethernet)

root@AP:~# netperf -H 192.168.1.1 -l 60
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0) port 0 AF_INET to 192.168.1.1 (192) port 0 AF_INET : demo
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380  16384  16384    60.00     215.55

Now upside down (Tested from my LEDE x86 Router, connected via SSH to LEDE Router):

root@LEDE:~# netperf -H 192.168.1.2 -l 60
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.1.2 (192.168) port 0 AF_INET : demo
Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380  16384  16384    60.02     444.21

Before Overclocking Archer C7, the results were about a 30% less.

Thanks,


#874

I think most people are talking here of NAT speed: one device on the LAN side, and the other on the WAN side, you can follow this steps to measure NAT speed (fast classifier related):
https://wiki.openwrt.org/doc/howto/benchmark.nat


#875

When I was using my Archer C7 as router (now is working as AP) I could get 300 Mbps. via WAN/LAN (Fast Path enabled, tested via wired LAN).


#876

That’s my bandwidth speed