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CHR TX IRQ Load Balancing CPUs

Sat Jul 18, 2020 10:29 am

Hello,

On my CHR I have ether2 (eth1) receiving traffic and ether3 (eth2) transmitting traffic. A single IRQ is seems to always be used on ether3 and therefore all traffic hits the same CPU for transmit traffic. See IRQ 65 below. On my ESXI VM I am seeing the particular CPU hit 70%+ utilization because of this. Is this normal?
/system resource irq print
Flags: ro - read-only
 #    IRQ USERS                                                                                                                                CPU ACTIVE-CPU         COUNT
 0      1 i8042                                                                                                                               auto          0             9
 1      9 acpi                                                                                                                                auto          1             0
 2     12 i8042                                                                                                                               auto          2             4
 3     14 ata_piix                                                                                                                            auto          3             0
 4     15 ata_piix                                                                                                                            auto          4             0
 5     40 vmw_pvscsi                                                                                                                          auto          5         6 570
 6     41 eth0-rxtx-0                                                                                                                         auto          0            85
 7     42 eth0-rxtx-1                                                                                                                         auto          1           300
 8     43 eth0-rxtx-2                                                                                                                         auto          2             5
 9     44 eth0-rxtx-3                                                                                                                         auto          3           350
10     45 eth0-rxtx-4                                                                                                                         auto          4           177
11     46 eth0-rxtx-5                                                                                                                         auto          5           184
12     47 eth0-rxtx-6                                                                                                                         auto          6        17 343
13     48 eth0-rxtx-7                                                                                                                         auto          7             6
14     49 eth0-event-8                                                                                                                        auto          6             0
15     50 eth1-rxtx-0                                                                                                                         auto          2     5 460 371
16     51 eth1-rxtx-1                                                                                                                         auto          3     5 507 482
17     52 eth1-rxtx-2                                                                                                                         auto          4     6 420 164
18     53 eth1-rxtx-3                                                                                                                         auto          5     6 216 126
19     54 eth1-rxtx-4                                                                                                                         auto          6     5 785 704
20     55 eth1-rxtx-5                                                                                                                         auto          7     5 929 202
21     56 eth1-rxtx-6                                                                                                                         auto          8     5 850 661
22     57 eth1-rxtx-7                                                                                                                         auto          9     6 255 897
23     58 eth1-event-8                                                                                                                        auto          7             0
24     59 eth2-rxtx-0                                                                                                                         auto          3            40
25     60 eth2-rxtx-1                                                                                                                         auto          4            24
26     61 eth2-rxtx-2                                                                                                                         auto          5         1 222
27     62 eth2-rxtx-3                                                                                                                         auto          6         1 022
28     63 eth2-rxtx-4                                                                                                                         auto          7            61
29     64 eth2-rxtx-5                                                                                                                         auto          8           291
30     65 eth2-rxtx-6                                                                                                                         auto          9    16 502 516
31     66 eth2-rxtx-7                                                                                                                         auto         10           244
32     67 eth2-event-8                                                                                                                        auto          8             0

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