Another improvement proposal for the Cubitruck and other multiprocessor
installations.
CPU1 usually runs completly idle! All interrupts are assigned to a
single CPU0 (see: cat /proc/interrupts)
Below a script and a systemd.service that assigns eth0 to the 2nd CPU.
/usr/local/bin/eth0affinity
Code:
--------------------
#!/bin/bash
# This script assigns the eth0 interrupt to the 2nd processor on the
Cubitruck board.
# It's started by the eth0affinity.service
#############################################
echo 2 > /proc/irq/$(cat /proc/interrupts | grep eth0 | cut -f 1 -d ":"
)/smp_affinity
exit 0
--------------------
/etc/systemd/system/eth0affinity.service
Code:
--------------------
[Unit]
Description= Assigns eth0 IRQ to 2nd CPU
[Service]
Type=oneshot
ExecStart=/usr/local/bin/eth0affinity
[Install]
WantedBy=multi-user.target
--------------------
Cheers
::: ' Touch Toolbox and more' (http://soundcheck-audio.blogspot.com) :::
by soundcheck
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