On my WRT1900ACS v2, I enabled packet-steering, ran some wan speed and buffer bloat tests, local iperf3 tests and then checked cat /proc/interrupts
and saw almost no impact. But after i downloaded and enabled irqbalance
, did the same tests and /proc/interrupts
results showed one of the wifi devices (73) was now utilizing the second cpu (CPU1) exclusively instead of everything just being on CPU0. My question is, should I leave Packet steering enabled at the same time as irqbalance as I saw no change with PS enabled in the first place?
Result after enabling irqbalance: CPU1 is now looking to be EXCLUSIVELY used by mlwifi (73). Marked with **. The interrupt count on CPU0 of 7238082 stopped increasing after enabling irqbalance.
CPU0 CPU1
17: 0 0 GIC-0 27 Edge gt
18: 948152 942882 GIC-0 29 Edge twd
19: 0 0 MPIC 5 Level armada_370_xp_per_cpu_tick
21: 1386080 0 GIC-0 34 Level mv64xxx_i2c
22: 20 0 GIC-0 44 Level ttyS0
32: 0 0 GIC-0 41 Level f1020300.watchdog
36: 0 0 GIC-0 96 Level f1020300.watchdog
37: 2337377 0 MPIC 8 Level eth0
38: 32104 0 GIC-0 50 Level ehci_hcd:usb1
39: 0 0 GIC-0 51 Level f1090000.crypto
40: 0 0 GIC-0 52 Level f1090000.crypto
41: 0 0 GIC-0 58 Level ahci-mvebu[f10a8000.sata]
42: 32 0 GIC-0 116 Level marvell-nfc
43: 0 0 GIC-0 49 Level xhci-hcd:usb2
44: 2 0 GIC-0 54 Level f1060800.xor
45: 2 0 GIC-0 97 Level f1060900.xor
49: 0 0 mv88e6xxx-g1 3 Edge mv88e6xxx-g1-atu-prob
51: 0 0 mv88e6xxx-g1 5 Edge mv88e6xxx-g1-vtu-prob
53: 5 3 mv88e6xxx-g1 7 Edge mv88e6xxx-g2
55: 2 1 mv88e6xxx-g2 0 Edge mv88e6xxx-1:00
56: 0 0 mv88e6xxx-g2 1 Edge mv88e6xxx-1:01
57: 0 0 mv88e6xxx-g2 2 Edge mv88e6xxx-1:02
58: 3 0 mv88e6xxx-g2 3 Edge mv88e6xxx-1:03
59: 0 2 mv88e6xxx-g2 4 Edge mv88e6xxx-1:04
70: 0 0 mv88e6xxx-g2 15 Edge mv88e6xxx-watchdog
71: 0 0 f1018100.gpio 24 Edge gpio-keys
72: 0 0 f1018100.gpio 29 Edge gpio-keys
**73: 7238082 8932373 GIC-0 61 Level mwlwifi**
74: 16323037 0 GIC-0 65 Level mwlwifi
IPI0: 0 1 CPU wakeup interrupts
IPI1: 0 0 Timer broadcast interrupts
IPI2: 214350 835561 Rescheduling interrupts
IPI3: 921 1560 Function call interrupts
IPI4: 0 0 CPU stop interrupts
IPI5: 0 0 IRQ work interrupts
IPI6: 0 0 completion interrupts
Err: 0