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When a mobile client connects, cpu usage increases.

ics ver 4.1.1
 - Receive each stream without using mixing.

# Question 1) After setting maxbitrate on mobile, when subscribing on pc, option does not work.

# Question 2) When a mobile client connects, mcu cpu usage increases.
"./erizoJS.js" pid increases.
Is there a way to prevent this?

Below is the result of mcu server top command.

[root@localhost Release-v4.1.1]# top
top - 16:56:30 up 3 days, 23:56,  2 users,  load average: 1.14, 0.80, 0.52
Tasks: 318 total,   1 running, 317 sleeping,   0 stopped,   0 zombie
%Cpu(s):  2.9 us,  1.3 sy,  0.0 ni, 95.8 id,  0.0 wa,  0.0 hi,  0.1 si,  0.0 st
KiB Mem : 32739116 total, 27880312 free,  1992792 used,  2866012 buff/cache
KiB Swap: 16515068 total, 16515068 free,        0 used. 30171488 avail Mem

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
24124 root      20   0 5977940  96888  23108 S  54.3  0.3   3:57.28 node ./erizoJS.js webrtc-736be7fb1c09a2f7393c@172.16.31.16+
65334 rabbitmq  20   0 4033924 157648   3112 S  10.9  0.5 616:12.48 /usr/lib64/erlang/erts-5.10.4/bin/beam.smp -W w -K true -A+
17076 root      20   0 1001412 103152  12480 S   6.3  0.3   2:57.77 node .
27343 root      20   0 1413788  53708  19368 S   5.6  0.2   0:18.11 node ./erizoJS.js video-6adc2ad52d7bb1a64591@172.16.31.168+
27738 root      20   0 1416228  54276  19364 S   5.6  0.2   0:17.92 node ./erizoJS.js video-6adc2ad52d7bb1a64591@172.16.31.168+
27771 root      20   0 1414372  54128  19364 S   5.6  0.2   0:16.64 node ./erizoJS.js video-6adc2ad52d7bb1a64591@172.16.31.168+
27746 root      20   0 1414160  54072  19340 S   5.3  0.2   0:16.80 node ./erizoJS.js video-6adc2ad52d7bb1a64591@172.16.31.168+
27157 root      20   0 1417272  56248  19368 S   3.6  0.2   0:13.25 node ./erizoJS.js video-6adc2ad52d7bb1a64591@172.16.31.168+
27724 root      20   0 1417100  57572  19364 S   3.6  0.2   0:13.02 node ./erizoJS.js video-6adc2ad52d7bb1a64591@172.16.31.168+
   10 root      20   0       0      0      0 S   1.0  0.0  52:47.93 [rcu_sched]
17249 root      20   0  933548  41860  12608 S   1.0  0.1   0:17.29 node . -U recording
17425 root      20   0  938768  48100  12628 S   1.0  0.1   0:14.30 node . -U video
26893 root      20   0  162188   2616   1696 R   1.0  0.0   0:03.16 top
17133 root      20   0  937928  44480  12624 S   0.7  0.1   0:13.18 node . -U audio
17367 root      20   0  937744  40676  12564 S   0.7  0.1   0:17.86 node . -U streaming
17487 root      20   0  948040  53088  12612 S   0.7  0.2   0:19.76 node . -U webrtc
24091 root      20   0 1134924  44664  17812 S   0.7  0.1   0:03.10 node ./erizoJS.js audio-bbb8ba4abca613a85355@172.16.31.168+
   19 root      20   0       0      0      0 S   0.3  0.0   0:03.11 [ksoftirqd/2]
15837 root      20   0       0      0      0 S   0.3  0.0   0:02.20 [kworker/0:1]
17190 root      20   0  936128  42504  12632 S   0.3  0.1   0:13.35 node . -U conference
17306 root      20   0  938828  46372  12612 S   0.3  0.1   0:11.82 node . -U sip
17640 root      20   0 1167300  50268  14220 S   0.3  0.2   0:23.78 node .
18888 root      20   0       0      0      0 S   0.3  0.0   0:00.94 [kworker/20:2]
24485 root      20   0 1209504  42872  18088 S   0.3  0.1   0:02.79 node ./erizoJS.js video-6adc2ad52d7bb1a64591@172.16.31.168+
24835 root      20   0 1030968  37092  12656 S   0.3  0.1   0:01.58 node ./erizoJS.js conference-6db42e0d657317a518f1@172.16.3+
24879 root      20   0 2810992  65984  19844 S   0.3  0.2   0:00.84 node ./erizoJS.js webrtc-736be7fb1c09a2f7393c@172.16.31.16+
27779 root      20   0 1074504  38896  17500 S   0.3  0.1   0:00.37 node ./erizoJS.js video-6adc2ad52d7bb1a64591@172.16.31.168+
29316 root      20   0       0      0      0 S   0.3  0.0   0:08.63 [kworker/9:0]
33878 root      20   0       0      0      0 S   0.3  0.0   0:13.09 [kworker/4:0]
39522 root      20   0  573928  17324   6084 S   0.3  0.1   0:54.58 /usr/bin/python2 -Es /usr/sbin/tuned -l -P
57438 root      20   0       0      0      0 S   0.3  0.0   0:04.58 [kworker/11:1]
65151 mongodb   20   0  690764  43984   4968 S   0.3  0.1  19:48.89 /usr/bin/mongod --quiet -f /etc/mongod.conf run
    1 root      20   0   46184   6532   3972 S   0.0  0.0   0:15.07 /usr/lib/systemd/systemd --system --deserialize 23
    2 root      20   0       0      0      0 S   0.0  0.0   0:00.19 [kthreadd]

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