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Better handling of nss_queue + etc affinity (#22)

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Using the previous version, not all nss related interrupts were being balanced across the available CPU cores.

This makes sure they are as well as moving a bit more off cpu0.
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anonymous-one 2024-04-07 02:03:43 +02:00 committed by GitHub
parent c39093e475
commit 28a6d744d4
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1 changed files with 30 additions and 18 deletions
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48
qca-nss-drv/files/qca-nss-drv.init
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@ -18,27 +18,39 @@
START=70
enable_rps() {
set_affinity() {
awk "/$1/{ print substr(\$1, 1, length(\$1)-1) }" /proc/interrupts | while read -r irq; do
[ -n "$irq" ] && echo "$2" > /proc/irq/"$irq"/smp_affinity
done
}
set_affinity_last() {
awk "/$1/{sub(/:/,\"\");last=\$1} END{print last}" /proc/interrupts | while read -r irq; do
[ -n "$irq" ] && echo "$2" > /proc/irq/"$irq"/smp_affinity
done
set_affinity(){
awk -v irq_name="$1" -v affinity="$2" -v occurrence="$3" '
BEGIN{count=0}
$NF==irq_name{
if(++count==occurrence){
sub(/:$/,"",$1);
logger -t "ucitrack"
system("logger -t \"qca-nss-drv\" \"Pinning IRQ " irq_name " occurance " occurrence " to core " affinity "\"");
system("printf " affinity " > /proc/irq/" $1 "/smp_affinity");
exit
}
}' /proc/interrupts
}
# assign 3 nss queues to each core
set_affinity 'nss_queue1' 2
set_affinity 'nss_queue2' 4
set_affinity 'nss_queue3' 8
set_affinity 'nss_queue0' 1
# nss_queue set 1
set_affinity 'nss_queue0' 2 1
set_affinity 'nss_queue1' 4 1
set_affinity 'nss_queue2' 8 1
set_affinity 'nss_queue3' 1 1
# assign nss buffer sos/queues to core 3
set_affinity 'nss_empty_buf_sos' 8
set_affinity 'nss_empty_buf_queue' 8
set_affinity_last 'nss_empty_buf_sos' 8
# nss_queue set 2
set_affinity 'nss_queue0' 4 2
set_affinity 'nss_queue1' 8 2
set_affinity 'nss_queue2' 1 2
set_affinity 'nss_queue3' 2 2
# nss buffer sos/queues set 1
set_affinity 'nss_empty_buf_sos' 4 1
set_affinity 'nss_empty_buf_queue' 8 1
# nss buffer sos/queues set 2
set_affinity 'nss_empty_buf_sos' 4 2
set_affinity 'nss_empty_buf_queue' 8 2
# Enable NSS RPS
sysctl -w dev.nss.rps.enable=1 > /dev/null 2> /dev/null