New BS Build - 11/27/2018 - r37860

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tatsuya46
DD-WRT Guru


Joined: 03 Jan 2010
Posts: 7340
Location: YWG, Canada

PostPosted: Thu Nov 29, 2018 23:36    Post subject: Reply with quote
Luiso_G wrote:
tatsuya46 wrote:
Luiso_G wrote:
tatsuya46 wrote:
Luiso_G wrote:
Router Model: R9000
Status: Running
Reset: Yes
Errors: CPU0 High usage by KSOFTIRQD/0

Enabling QoS cause high utilization on CPU 0 by apparent process ksoftirqd/0 provoking slow/poor transmissions speed on WAN, WLAN and LAN. This is occurring since the last 4 or 5 previous versions.


u have 4 cores balance the interrupts manually, and get off brainslayer builds theyre bad and get no testing anymore use kong build


Already tested it with same results... it is so bad that it drop the AC wifi speed down below 200Mb with only two clients connected and transmitting simultaneously, even with Kong's

I rolled back to latest Netgear F/W and it is working as it should with the exception of their DQoS which is, as always, broken.

I really would like to keep using DD-WRT...


did u try balancing interrupts? what wan speed are we talking about here?


On WAN 230/26Mb out of 400/30Mb with 90%/90% ceiling with HFSQ/FS_CODEL (and ultimately any combination)
On WLAN 200Mb +/- out of 866Mb (I always was able to get 600+/-) with 5GHz HT160 Channel 100 UUU
On LAN 600+/- out of 1Gb transferring from PC to PC
KSOFTIRQD/0 was getting up to 16% with QoS On or Off

Also I've noted that since r37139 or so (can't remember exactly) this KSOFTIRQD/0 could get 12%(est) on CPU0 but was able to hit on WAN 250Mb out of 300Mb (at that time my ISP Plan was 300Mb).
On WLAN I could transmit to 400~500Mb
On LAN I can't really remember any drop/slow at that time.
All the test were toggling On/Off QoS and SFE respectively.

Right now on my R9000 I've installed NG OEM F/W V1.0.4.12 and can't spot nothing going above 0.X% on any scenario but of course their DQoS is garbage.


if u go back to ddwrt can u show a screenshot of cat /proc/interrupts and top while a speedtest is running with qos on, once with ethernet, once with wifi.

_________________
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/QCA9984/6174 ---> DD-WRT v3.0-r44091 std
[QUALCOMM] DIR-862L ------------------------> DD-WRT v3.0-r44112 std
[QUALCOMM] DIR-862L ------------------------> DD-WRT v3.0-r44112 std
[QUALCOMM] WNDR4300 v1 ------------------> DD-WRT v3.0-r44112 std
▲ ACTIVE / INACTIVE ▼
[BROADCOM] DIR-860L A1 -------------------> DD-WRT v3.0-r44048 std


If you use DSLReports please enable hi-res bufferbloat.


Sigh.. why do i exist anyway..
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