Again my test are done with a loaded system
Will kill any process any try again...
Still there is a problem with l2 cache scaling.
There is no argument here. We all are just trying to figure out how to measure the impact of the changes and making sure that the router is not slower than it used to be with the broken L2 cache scaling.
1 Like
Tweaking some code as i notice there are some small problem in the scaling logic...
Anyway we have peak but still can't exceed 700mb
root@No-Lag-Router:~# ./mbw 32
Long uses 4 bytes. Allocating 2*8388608 elements = 67108864 bytes of memory.
Using 262144 bytes as blocks for memcpy block copy test.
Getting down to business... Doing 10 runs per test.
0 Method: MEMCPY Elapsed: 0.05364 MiB: 32.00000 Copy: 596.614 MiB/s
1 Method: MEMCPY Elapsed: 0.04946 MiB: 32.00000 Copy: 646.935 MiB/s
2 Method: MEMCPY Elapsed: 0.04380 MiB: 32.00000 Copy: 730.677 MiB/s
3 Method: MEMCPY Elapsed: 0.04356 MiB: 32.00000 Copy: 734.568 MiB/s
4 Method: MEMCPY Elapsed: 0.04394 MiB: 32.00000 Copy: 728.249 MiB/s
5 Method: MEMCPY Elapsed: 0.05945 MiB: 32.00000 Copy: 538.249 MiB/s
6 Method: MEMCPY Elapsed: 0.06197 MiB: 32.00000 Copy: 516.404 MiB/s
7 Method: MEMCPY Elapsed: 0.06210 MiB: 32.00000 Copy: 515.306 MiB/s
8 Method: MEMCPY Elapsed: 0.06188 MiB: 32.00000 Copy: 517.147 MiB/s
9 Method: MEMCPY Elapsed: 0.06211 MiB: 32.00000 Copy: 515.223 MiB/s
AVG Method: MEMCPY Elapsed: 0.05419 MiB: 32.00000 Copy: 590.510 MiB/s
0 Method: DUMB Elapsed: 0.83081 MiB: 32.00000 Copy: 38.517 MiB/s
1 Method: DUMB Elapsed: 0.84676 MiB: 32.00000 Copy: 37.791 MiB/s
2 Method: DUMB Elapsed: 0.82403 MiB: 32.00000 Copy: 38.834 MiB/s
3 Method: DUMB Elapsed: 0.83276 MiB: 32.00000 Copy: 38.427 MiB/s
4 Method: DUMB Elapsed: 0.81806 MiB: 32.00000 Copy: 39.117 MiB/s
5 Method: DUMB Elapsed: 0.82962 MiB: 32.00000 Copy: 38.572 MiB/s
6 Method: DUMB Elapsed: 0.43703 MiB: 32.00000 Copy: 73.222 MiB/s
7 Method: DUMB Elapsed: 0.20770 MiB: 32.00000 Copy: 154.071 MiB/s
8 Method: DUMB Elapsed: 0.18971 MiB: 32.00000 Copy: 168.681 MiB/s
9 Method: DUMB Elapsed: 0.53902 MiB: 32.00000 Copy: 59.366 MiB/s
AVG Method: DUMB Elapsed: 0.63555 MiB: 32.00000 Copy: 50.350 MiB/s
0 Method: MCBLOCK Elapsed: 0.06207 MiB: 32.00000 Copy: 515.564 MiB/s
1 Method: MCBLOCK Elapsed: 0.06249 MiB: 32.00000 Copy: 512.066 MiB/s
2 Method: MCBLOCK Elapsed: 0.06256 MiB: 32.00000 Copy: 511.542 MiB/s
3 Method: MCBLOCK Elapsed: 0.06228 MiB: 32.00000 Copy: 513.825 MiB/s
4 Method: MCBLOCK Elapsed: 0.06217 MiB: 32.00000 Copy: 514.718 MiB/s
5 Method: MCBLOCK Elapsed: 0.06335 MiB: 32.00000 Copy: 505.114 MiB/s
6 Method: MCBLOCK Elapsed: 0.04638 MiB: 32.00000 Copy: 689.953 MiB/s
7 Method: MCBLOCK Elapsed: 0.04597 MiB: 32.00000 Copy: 696.046 MiB/s
8 Method: MCBLOCK Elapsed: 0.06358 MiB: 32.00000 Copy: 503.295 MiB/s
9 Method: MCBLOCK Elapsed: 0.06270 MiB: 32.00000 Copy: 510.383 MiB/s
AVG Method: MCBLOCK Elapsed: 0.05935 MiB: 32.00000 Copy: 539.130 MiB/s
Do you have this in your patch set?
Oh, one more thing to do on this router to free up some CPU cycles to disable stats collection on the switch:
swconfig dev switch0 set ar8xxx_mib_poll_interval 0
i'm start to thinking that the real culprit here is the fab scaling...
Improvement with stock implementation is massive...
root@No-Lag-Router:~# echo performance > /sys/devices/system/cpu/cpufreq/policy0
/scaling_governor
root@No-Lag-Router:~# echo performance > /sys/devices/system/cpu/cpufreq/policy1
/scaling_governor
root@No-Lag-Router:~# ./mbw 32 | grep AVG
AVG Method: MEMCPY Elapsed: 0.04263 MiB: 32.00000 Copy: 750.717 MiB/s
AVG Method: DUMB Elapsed: 0.18602 MiB: 32.00000 Copy: 172.024 MiB/s
AVG Method: MCBLOCK Elapsed: 0.04317 MiB: 32.00000 Copy: 741.187 MiB/s
root@No-Lag-Router:~# ./mbw 32 | grep AVG
AVG Method: MEMCPY Elapsed: 0.04333 MiB: 32.00000 Copy: 738.498 MiB/s
AVG Method: DUMB Elapsed: 0.18547 MiB: 32.00000 Copy: 172.536 MiB/s
AVG Method: MCBLOCK Elapsed: 0.04298 MiB: 32.00000 Copy: 744.612 MiB/s
root@No-Lag-Router:~# ./mbw 32 | grep AVG
AVG Method: MEMCPY Elapsed: 0.04364 MiB: 32.00000 Copy: 733.356 MiB/s
AVG Method: DUMB Elapsed: 0.18602 MiB: 32.00000 Copy: 172.029 MiB/s
AVG Method: MCBLOCK Elapsed: 0.04369 MiB: 32.00000 Copy: 732.503 MiB/s
Also
root@No-Lag-Router:~# echo 800000 > /sys/devices/system/cpu/cpufreq/policy0/scal
ing_max_freq
sleep 1
root@No-Lag-Router:~# echo 800000 > /sys/devices/system/cpu/cpufreq/policy1/scal
ing_max_freq
root@No-Lag-Router:~# sleep 1
root@No-Lag-Router:~# echo 1750000 > /sys/devices/system/cpu/cpufreq/policy0/sca
ling_max_freq
root@No-Lag-Router:~# echo 1750000 > /sys/devices/system/cpu/cpufreq/policy1/sca
ling_max_freq
root@No-Lag-Router:~# ./mbw 32 | grep AVG
AVG Method: MEMCPY Elapsed: 0.04316 MiB: 32.00000 Copy: 741.395 MiB/s
AVG Method: DUMB Elapsed: 0.18944 MiB: 32.00000 Copy: 168.923 MiB/s
AVG Method: MCBLOCK Elapsed: 0.04540 MiB: 32.00000 Copy: 704.860 MiB/s
root@No-Lag-Router:~# ./mbw 32 | grep AVG
AVG Method: MEMCPY Elapsed: 0.04338 MiB: 32.00000 Copy: 737.672 MiB/s
AVG Method: DUMB Elapsed: 0.18819 MiB: 32.00000 Copy: 170.039 MiB/s
AVG Method: MCBLOCK Elapsed: 0.04597 MiB: 32.00000 Copy: 696.086 MiB/s
We need to find a way to trigger the problem... I added one line to the stock patchest that set the l2 clk to idle and then to the real one. That's all...
Would you consider submitting this one to 19.07 as well?
Np but we still need to make sure it's actually fixed and for now i can't find a way to check this
What is it? I thought that you were going after memory throughput, which is improved. Even though I can achieve the same 700+ MB/s with the existing code by changing the CPU freq from 800 to 1,750MHz.
It = problem with performance degradation with cache freq transaction
Doing more test ...
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 600000
Setting scaling_min_freq to 600000
cpu0 cur_freq: 600000
cpu1 cur_freq: 600000
AVG Method: MEMCPY Elapsed: 0.01975 MiB: 8.00000 Copy: 405.024 MiB/s
AVG Method: DUMB Elapsed: 0.14143 MiB: 8.00000 Copy: 56.566 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02036 MiB: 8.00000 Copy: 392.939 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 800000
Setting scaling_min_freq to 800000
cpu0 cur_freq: 800000
cpu1 cur_freq: 800000
AVG Method: MEMCPY Elapsed: 0.01800 MiB: 8.00000 Copy: 444.447 MiB/s
AVG Method: DUMB Elapsed: 0.09569 MiB: 8.00000 Copy: 83.601 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01846 MiB: 8.00000 Copy: 433.287 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 1000000
Setting scaling_min_freq to 1000000
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.01283 MiB: 8.00000 Copy: 623.320 MiB/s
AVG Method: DUMB Elapsed: 0.07759 MiB: 8.00000 Copy: 103.112 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01286 MiB: 8.00000 Copy: 622.079 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 1400000
Setting scaling_min_freq to 1400000
cpu0 cur_freq: 1400000
cpu1 cur_freq: 1400000
AVG Method: MEMCPY Elapsed: 0.01186 MiB: 8.00000 Copy: 674.639 MiB/s
AVG Method: DUMB Elapsed: 0.05576 MiB: 8.00000 Copy: 143.476 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01181 MiB: 8.00000 Copy: 677.220 MiB/s
Setting scaling_max_freq to 1000000
sh: write error: Invalid argument
sh: write error: Invalid argument
Setting scaling_max_freq to 1725000
Setting scaling_min_freq to 1725000
cpu0 cur_freq: 1725000
cpu1 cur_freq: 1725000
AVG Method: MEMCPY Elapsed: 0.01174 MiB: 8.00000 Copy: 681.628 MiB/s
AVG Method: DUMB Elapsed: 0.04653 MiB: 8.00000 Copy: 171.928 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01193 MiB: 8.00000 Copy: 670.573 MiB/s
Looks good to me
the real outlier on 4.19 is the DUMB method, on master it runs at 170+MiB/s, on 4.19 it can go as low as 40MiB/s. i would not worry too much about MEMCPY and MCBLOCK as long as they get up to around 650+. from what i remember, it is pretty heavily influenced by the block-size, and by anything else going on in the router at the time. if you do a larger block copy then you get higher rates usually.
if you want to see it on master with the scaling fixed, try https://github.com/facboy/openwrt/tree/pr2280. it should transition up and down from idle to 1.7Ghz without breaking the L2.
i have a script on my other machine which tests the various transitions.
check my test. Do you see the problem in mine? Can you share the script so i can test on my router?
i need to check my results at home, which is where the script is too. from memory the 600-800Mhz results should be around 600MiB/s too.
are your latest tests on 4.19?
Yes with the stock patch set modified with your fix (set cache to idle first and then to the target Freq)
With your patches the scaling works but I get worse result
i forgot, the scripts in my git repo are set up to do this already: https://github.com/facboy/openwrt-r7800-freq-test
this is with 16MB mbw:
$ ./set_scaling_governor.sh performance
$ ./set_scaling_max_freq.sh -m 600 1725 1400 1000 800 600
Setting scaling_max_freq to 600000
cpu0 cur_freq: 600000
cpu1 cur_freq: 600000
AVG Method: MEMCPY Elapsed: 0.02918 MiB: 16.00000 Copy: 548.411 MiB/s
AVG Method: DUMB Elapsed: 0.28552 MiB: 16.00000 Copy: 56.038 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02885 MiB: 16.00000 Copy: 554.533 MiB/s
Setting scaling_max_freq to 1725000
cpu0 cur_freq: 1725000
cpu1 cur_freq: 1725000
AVG Method: MEMCPY Elapsed: 0.02180 MiB: 16.00000 Copy: 734.103 MiB/s
AVG Method: DUMB Elapsed: 0.09291 MiB: 16.00000 Copy: 172.205 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02216 MiB: 16.00000 Copy: 721.924 MiB/s
Setting scaling_max_freq to 1400000
cpu0 cur_freq: 1400000
cpu1 cur_freq: 1400000
AVG Method: MEMCPY Elapsed: 0.02239 MiB: 16.00000 Copy: 714.528 MiB/s
AVG Method: DUMB Elapsed: 0.10948 MiB: 16.00000 Copy: 146.148 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02230 MiB: 16.00000 Copy: 717.415 MiB/s
Setting scaling_max_freq to 1000000
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.02715 MiB: 16.00000 Copy: 589.240 MiB/s
AVG Method: DUMB Elapsed: 0.15378 MiB: 16.00000 Copy: 104.048 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02619 MiB: 16.00000 Copy: 610.806 MiB/s
Setting scaling_max_freq to 800000
cpu0 cur_freq: 800000
cpu1 cur_freq: 800000
AVG Method: MEMCPY Elapsed: 0.02682 MiB: 16.00000 Copy: 596.559 MiB/s
AVG Method: DUMB Elapsed: 0.18749 MiB: 16.00000 Copy: 85.339 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02701 MiB: 16.00000 Copy: 592.338 MiB/s
Setting scaling_max_freq to 600000
cpu0 cur_freq: 600000
cpu1 cur_freq: 600000
AVG Method: MEMCPY Elapsed: 0.02893 MiB: 16.00000 Copy: 553.032 MiB/s
AVG Method: DUMB Elapsed: 0.29533 MiB: 16.00000 Copy: 54.176 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02903 MiB: 16.00000 Copy: 551.103 MiB/s
root@No-Lag-Router:~# ./set_scaling_governor.sh performance
root@No-Lag-Router:~# ./set_scaling_max_freq.sh -m 600 1725 1400 1000 800 600
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 600
sh: write error: Invalid argument
sh: write error: Invalid argument
Setting scaling_min_freq to 600
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.01303 MiB: 8.00000 Copy: 613.737 MiB/s
AVG Method: DUMB Elapsed: 0.07822 MiB: 8.00000 Copy: 102.277 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01331 MiB: 8.00000 Copy: 600.998 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 1725
Setting scaling_min_freq to 1725
cpu0 cur_freq: 384000
cpu1 cur_freq: 384000
AVG Method: MEMCPY Elapsed: 0.02133 MiB: 8.00000 Copy: 375.018 MiB/s
AVG Method: DUMB Elapsed: 0.18640 MiB: 8.00000 Copy: 42.919 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02138 MiB: 8.00000 Copy: 374.178 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 1400
sh: write error: Invalid argument
sh: write error: Invalid argument
Setting scaling_min_freq to 1400
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.01299 MiB: 8.00000 Copy: 615.986 MiB/s
AVG Method: DUMB Elapsed: 0.07647 MiB: 8.00000 Copy: 104.610 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01341 MiB: 8.00000 Copy: 596.579 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 1000
sh: write error: Invalid argument
sh: write error: Invalid argument
Setting scaling_min_freq to 1000
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.01335 MiB: 8.00000 Copy: 599.242 MiB/s
AVG Method: DUMB Elapsed: 0.07765 MiB: 8.00000 Copy: 103.022 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01350 MiB: 8.00000 Copy: 592.597 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 800
sh: write error: Invalid argument
sh: write error: Invalid argument
Setting scaling_min_freq to 800
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.01321 MiB: 8.00000 Copy: 605.409 MiB/s
AVG Method: DUMB Elapsed: 0.07742 MiB: 8.00000 Copy: 103.333 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01301 MiB: 8.00000 Copy: 614.723 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 600
sh: write error: Invalid argument
sh: write error: Invalid argument
Setting scaling_min_freq to 600
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.01286 MiB: 8.00000 Copy: 622.098 MiB/s
AVG Method: DUMB Elapsed: 0.07673 MiB: 8.00000 Copy: 104.258 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01350 MiB: 8.00000 Copy: 592.408 MiB/s
root@No-Lag-Router:~# ./set_scaling_max_freq.sh -m 600 1725 1400 1000 800 600
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 600
Setting scaling_min_freq to 600
cpu0 cur_freq: 384000
cpu1 cur_freq: 384000
AVG Method: MEMCPY Elapsed: 0.02204 MiB: 8.00000 Copy: 362.998 MiB/s
AVG Method: DUMB Elapsed: 0.18810 MiB: 8.00000 Copy: 42.531 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02117 MiB: 8.00000 Copy: 377.913 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 1725
Setting scaling_min_freq to 1725
cpu0 cur_freq: 384000
cpu1 cur_freq: 384000
AVG Method: MEMCPY Elapsed: 0.02152 MiB: 8.00000 Copy: 371.675 MiB/s
AVG Method: DUMB Elapsed: 0.17946 MiB: 8.00000 Copy: 44.578 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02170 MiB: 8.00000 Copy: 368.681 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 1400
sh: write error: Invalid argument
sh: write error: Invalid argument
Setting scaling_min_freq to 1400
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.01304 MiB: 8.00000 Copy: 613.398 MiB/s
AVG Method: DUMB Elapsed: 0.07685 MiB: 8.00000 Copy: 104.096 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01367 MiB: 8.00000 Copy: 585.018 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 1000
sh: write error: Invalid argument
sh: write error: Invalid argument
Setting scaling_min_freq to 1000
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.01312 MiB: 8.00000 Copy: 609.603 MiB/s
AVG Method: DUMB Elapsed: 0.07776 MiB: 8.00000 Copy: 102.876 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01298 MiB: 8.00000 Copy: 616.119 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 800
sh: write error: Invalid argument
sh: write error: Invalid argument
Setting scaling_min_freq to 800
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.01298 MiB: 8.00000 Copy: 616.105 MiB/s
AVG Method: DUMB Elapsed: 0.07812 MiB: 8.00000 Copy: 102.400 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01294 MiB: 8.00000 Copy: 618.429 MiB/s
Setting scaling_max_freq to 1000000
Setting scaling_max_freq to 600
sh: write error: Invalid argument
sh: write error: Invalid argument
Setting scaling_min_freq to 600
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.01290 MiB: 8.00000 Copy: 620.102 MiB/s
AVG Method: DUMB Elapsed: 0.07883 MiB: 8.00000 Copy: 101.487 MiB/s
AVG Method: MCBLOCK Elapsed: 0.01381 MiB: 8.00000 Copy: 579.278 MiB/s
there are some problem with your script but this is my output
i think the errors are because in 4.19 one of the policies is no longer there. but I don't understand other things in your output, where does this come from?
Setting scaling_min_freq to 600
i can't find that anywhere in my repo.
@facboy yes sorry i had a modified function file
here new output...
root@No-Lag-Router:~# ./set_scaling_max_freq.sh -m 600 1725 1400 1000 800 600
Setting scaling_max_freq to 600000
cpu0 cur_freq: 600000
cpu1 cur_freq: 600000
AVG Method: MEMCPY Elapsed: 0.04053 MiB: 16.00000 Copy: 394.767 MiB/s
AVG Method: DUMB Elapsed: 0.28719 MiB: 16.00000 Copy: 55.711 MiB/s
AVG Method: MCBLOCK Elapsed: 0.03880 MiB: 16.00000 Copy: 412.363 MiB/s
Setting scaling_max_freq to 1725000
cpu0 cur_freq: 1725000
cpu1 cur_freq: 1725000
AVG Method: MEMCPY Elapsed: 0.02439 MiB: 16.00000 Copy: 655.974 MiB/s
AVG Method: DUMB Elapsed: 0.09345 MiB: 16.00000 Copy: 171.207 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02505 MiB: 16.00000 Copy: 638.779 MiB/s
Setting scaling_max_freq to 1400000
cpu0 cur_freq: 1400000
cpu1 cur_freq: 1400000
AVG Method: MEMCPY Elapsed: 0.02456 MiB: 16.00000 Copy: 651.540 MiB/s
AVG Method: DUMB Elapsed: 0.11203 MiB: 16.00000 Copy: 142.818 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02502 MiB: 16.00000 Copy: 639.555 MiB/s
Setting scaling_max_freq to 1000000
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.02610 MiB: 16.00000 Copy: 613.060 MiB/s
AVG Method: DUMB Elapsed: 0.15470 MiB: 16.00000 Copy: 103.424 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02695 MiB: 16.00000 Copy: 593.613 MiB/s
Setting scaling_max_freq to 800000
cpu0 cur_freq: 800000
cpu1 cur_freq: 800000
AVG Method: MEMCPY Elapsed: 0.03690 MiB: 16.00000 Copy: 433.595 MiB/s
AVG Method: DUMB Elapsed: 0.19462 MiB: 16.00000 Copy: 82.210 MiB/s
AVG Method: MCBLOCK Elapsed: 0.03720 MiB: 16.00000 Copy: 430.067 MiB/s
Setting scaling_max_freq to 600000
cpu0 cur_freq: 600000
cpu1 cur_freq: 600000
AVG Method: MEMCPY Elapsed: 0.04074 MiB: 16.00000 Copy: 392.748 MiB/s
AVG Method: DUMB Elapsed: 0.28675 MiB: 16.00000 Copy: 55.797 MiB/s
AVG Method: MCBLOCK Elapsed: 0.04139 MiB: 16.00000 Copy: 386.578 MiB/s
root@No-Lag-Router:~# ./set_scaling_max_freq.sh -m 600 1725 1400 1000 800 600
Setting scaling_max_freq to 600000
cpu0 cur_freq: 600000
cpu1 cur_freq: 600000
AVG Method: MEMCPY Elapsed: 0.04049 MiB: 16.00000 Copy: 395.116 MiB/s
AVG Method: DUMB Elapsed: 0.28535 MiB: 16.00000 Copy: 56.072 MiB/s
AVG Method: MCBLOCK Elapsed: 0.03991 MiB: 16.00000 Copy: 400.879 MiB/s
Setting scaling_max_freq to 1725000
cpu0 cur_freq: 1725000
cpu1 cur_freq: 1725000
AVG Method: MEMCPY Elapsed: 0.02455 MiB: 16.00000 Copy: 651.673 MiB/s
AVG Method: DUMB Elapsed: 0.09382 MiB: 16.00000 Copy: 170.546 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02415 MiB: 16.00000 Copy: 662.583 MiB/s
Setting scaling_max_freq to 1400000
cpu0 cur_freq: 1400000
cpu1 cur_freq: 1400000
AVG Method: MEMCPY Elapsed: 0.02500 MiB: 16.00000 Copy: 640.044 MiB/s
AVG Method: DUMB Elapsed: 0.11213 MiB: 16.00000 Copy: 142.689 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02462 MiB: 16.00000 Copy: 649.791 MiB/s
Setting scaling_max_freq to 1000000
cpu0 cur_freq: 1000000
cpu1 cur_freq: 1000000
AVG Method: MEMCPY Elapsed: 0.02660 MiB: 16.00000 Copy: 601.508 MiB/s
AVG Method: DUMB Elapsed: 0.15455 MiB: 16.00000 Copy: 103.527 MiB/s
AVG Method: MCBLOCK Elapsed: 0.02589 MiB: 16.00000 Copy: 618.088 MiB/s
Setting scaling_max_freq to 800000
cpu0 cur_freq: 800000
cpu1 cur_freq: 800000
AVG Method: MEMCPY Elapsed: 0.03696 MiB: 16.00000 Copy: 432.893 MiB/s
AVG Method: DUMB Elapsed: 0.19731 MiB: 16.00000 Copy: 81.091 MiB/s
AVG Method: MCBLOCK Elapsed: 0.03754 MiB: 16.00000 Copy: 426.244 MiB/s
Setting scaling_max_freq to 600000
cpu0 cur_freq: 600000
cpu1 cur_freq: 600000
AVG Method: MEMCPY Elapsed: 0.03962 MiB: 16.00000 Copy: 403.880 MiB/s
AVG Method: DUMB Elapsed: 0.28325 MiB: 16.00000 Copy: 56.487 MiB/s
AVG Method: MCBLOCK Elapsed: 0.03986 MiB: 16.00000 Copy: 401.386 MiB/s
root@No-Lag-Router:~#
What do you think about this results?
hum...well everything is lower. but maybe it depends on what else is running on the router. it doesn't look too bad, but need to run some tests without the performance governor too.
softethervpn constantly running could be the culprit.
If you want i can share the patch so you can test yourselft.
1 Like