On Thu, 23 Jan 2020 11:22:31 -0600
Christian Deacon <gamemann@xxxxxxxxxxx> wrote:
> Thank you for the information and I will try these commands tonight when
> there is higher traffic load! The 'perf' command seems interesting.
Thanks for the perf output in the private email thread. From the output
I can clearly see the problem (some copy pasted below signature). You
are using the driver igb which does not support XDP-native, and is thus
using generic-XDP.
This driver only have 192 bytes headroom, where 256 is needed. Thus,
running XDP-generic will be slower than running the normal network
stack, as every packet will get reallocated and copied.
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
LinkedIn: http://www.linkedin.com/in/brouer
2.88% swapper [kernel.kallsyms] [k] igb_poll
|
--2.82%--igb_poll
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--2.45%--net_rx_action
__softirqentry_text_start
irq_exit
0.71% 006 swapper [kernel.kallsyms] [k] page_frag_free
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---page_frag_free
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--0.68%--skb_free_head
pskb_expand_head
do_xdp_generic
netif_receive_skb_internal
napi_gro_receive
igb_clean_rx_irq
igb_poll
net_rx_action
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