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QOS Max Download Speed on DIR862-A1 (DIR-862L) on r29495

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alias8818
DD-WRT Novice

Joined: 20 Apr 2016
Posts: 3

Posted: Wed Apr 27, 2016 12:06 Post subject: QOS Max Download Speed on DIR862-A1 (DIR-862L) on r29495

I am not quite sure if its the CPU not being able to handle it or a bug of sorts. So, I shall post here for feedback.

I have a 300mbps download, and 30mbps upload to my ISP. I can reach well above said limits above with QOS disabled. I set my QOS down max at 280000kbps and up at 28000kbps. Enabled -- I've reached a max of ~140-150mbps download and full upload.

To ensure it was working, I lowered the the max to 100000kbps to find that the download was correctly limited to 100mbps. However, it seems that something is holding me back from my full potential.

I tried setting max kbps to 0, this disabling throttling/QOS on the downpipe, but it did not increase at all. In fact, I have tried HTB all disciplines and HFSC all disciplines with similar results.

I went and ran "top" as a download was progressing to find these two processes up top:

37.2% [ksoftirqd/0]
34.7% hostapd -B -P /var/run/ath0_hosta

Here is the full "top"

Code:

Mem: 74136K used, 52496K free, 0K shrd, 3440K buff, 9068K cached
CPU: 0.7% usr 0.1% sys 0.0% nic 13.4% idle 0.0% io 0.0% irq 85.5% sirq
Load average: 0.47 0.30 0.20 3/37 11735
PID PPID USER STAT VSZ %VSZ CPU %CPU COMMAND
3 2 root RW 0 0.0 0 32.0 [ksoftirqd/0]
832 1 root R 1828 1.4 0 31.2 hostapd -B -P /var/run/ath0_hosta
1232 1 root S 4372 3.4 0 5.6 httpd -p 80
561 1 root S 1728 1.3 0 1.7 watchdog
853 1 root R 1824 1.4 0 1.3 hostapd -B -P /var/run/ath1_hosta
11680 5383 root R 1144 0.9 0 1.3 top
74 2 root SW 0 0.0 0 0.9 [kworker/0:1]
6 2 root SW 0 0.0 0 0.9 [kworker/u2:0]
1126 1 root S 1684 1.3 0 0.3 resetbutton
10034 1 root S 1712 1.3 0 0.0 wland
1061 1 root S 1604 1.2 0 0.0 ttraff
1 0 root S 1488 1.1 0 0.0 /sbin/init
2066 1 root S 1484 1.1 0 0.0 process_monitor
938 1 root S 1220 0.9 0 0.0 dnsmasq -u root -g root --conf-fi
915 1 root S 1144 0.9 0 0.0 telnetd
5383 915 root S 1144 0.9 0 0.0 -sh
1132 1 root S 1136 0.8 0 0.0 syslogd -L
1653 1 root S 1136 0.8 0 0.0 udhcpc -i eth0 -p /var/run/udhcpc
1135 1 root S 1136 0.8 0 0.0 klogd
556 1 root S 940 0.7 0 0.0 /sbin/mstpd

That test was done with HTB/FQ_CODEL.

Edit, I disabled QOS to find similar "top" results. This download test gained the expected 300mbps/30mbps at least.

Code:

Mem: 71788K used, 54844K free, 0K shrd, 3440K buff, 9068K cached
CPU: 0.3% usr 0.5% sys 0.0% nic 0.3% idle 0.0% io 0.0% irq 98.6% sirq
Load average: 0.85 0.40 0.26 5/37 12365
PID PPID USER STAT VSZ %VSZ CPU %CPU COMMAND
832 1 root R 1828 1.4 0 44.8 hostapd -B -P /var/run/ath0_hosta
3 2 root RW 0 0.0 0 36.2 [ksoftirqd/0]
1232 1 root S 4372 3.4 0 4.7 httpd -p 80
74 2 root SW 0 0.0 0 4.6 [kworker/0:1]
6 2 root SW 0 0.0 0 3.8 [kworker/u2:0]
556 1 root S 940 0.7 0 1.4 /sbin/mstpd
1126 1 root S 1684 1.3 0 1.2 resetbutton
11680 5383 root R 1144 0.9 0 1.2 top
561 1 root S 1728 1.3 0 0.9 watchdog
915 1 root S 1144 0.9 0 0.1 telnetd
853 1 root S 1824 1.4 0 0.0 hostapd -B -P /var/run/ath1_hosta
12025 1 root S 1644 1.2 0 0.0 wland
1061 1 root S 1604 1.2 0 0.0 ttraff
1 0 root S 1488 1.1 0 0.0 /sbin/init
2066 1 root S 1484 1.1 0 0.0 process_monitor
938 1 root S 1220 0.9 0 0.0 dnsmasq -u root -g root --conf-fi
5383 915 root S 1144 0.9 0 0.0 -sh
1132 1 root S 1136 0.8 0 0.0 syslogd -L
1653 1 root S 1136 0.8 0 0.0 udhcpc -i eth0 -p /var/run/udhcpc
1135 1 root S 1136 0.8 0 0.0 klogd

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tatsuya46
DD-WRT Guru

Joined: 03 Jan 2010
Posts: 7568
Location: YWG, Canada

Posted: Wed Apr 27, 2016 16:01 Post subject:

look at sirq
_________________
LATEST FIRMWARE(S)

BrainSlayer wrote:

we just do it since we do not like any restrictions enforced by stupid cocaine snorting managers

[x86_64] Haswell i3-4150/QCA9984/QCA9882 ------> r55797 std
[QUALCOMM] DIR-862L --------------------------------> r55797 std
▲ ACTIVE / INACTIVE ▼
[QUALCOMM] WNDR4300 v1 --------------------------> r50485 std
[BROADCOM] DIR-860L A1 ----------------------------> r50485 std

Sigh.. why do i exist anyway.. | I love you Anthony.. never forget that.. my other 99% that ill never see again..

alias8818
DD-WRT Novice

Joined: 20 Apr 2016
Posts: 3

Posted: Thu Apr 28, 2016 7:57 Post subject:
I just found it interesting it the process usage and SIRQ was similar for each transfer test of transfer I did, with QOS on and QOS off. Doesn't look like I can run QOS for top bandwidth with this little guy. Probably will have to break out pfSense and connect it all through my 48port switch. I'll probably just use this as an AP... Was hoping it could do more.

tatsuya46
DD-WRT Guru

Joined: 03 Jan 2010
Posts: 7568
Location: YWG, Canada

Posted: Thu Apr 28, 2016 8:15 Post subject:

software mode nat + qos is a train wreck for the cpu & theres no way around except brute cpu power or another network device that handles qos/nat
_________________
LATEST FIRMWARE(S)

BrainSlayer wrote:

we just do it since we do not like any restrictions enforced by stupid cocaine snorting managers

alias8818
DD-WRT Novice

Joined: 20 Apr 2016
Posts: 3

Posted: Thu Apr 28, 2016 8:18 Post subject:
Thanks man, again.

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