On 15/02/2023 05:50, ChangLimin wrote:
Before enable dpdk, all ovs-vswitch threads were affinitied to cpu 0-27. Cpu
28-31 were isolated in grub, will used for pmd.
After enable dpdk, many threads were affinitied only to the first lcore cpu.
Below is the output:
# ovs-vsctl --no-wait set Open_vSwitch .
other_config:dpdk-socket-mem="4096,4096"
# ovs-vsctl --no-wait set Open_vSwitch . other_config:pmd-cpu-mask="0xf0000000"
# cpu 28-31
# ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-lcore-mask=2
# cpu 1
# ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true
# taskset -apc `pidof ovs-vswitchd`
pid 260702's current affinity list: 1 "ovs-vswitchd" main thread
pid 260709's current affinity list: 0-27 "urcu4"
pid 260742's current affinity list: 0-27 "ct_clean39"
pid 260743's current affinity list: 0-27 "ipf_clean40"
pid 260836's current affinity list: 0,2-27 "eal-intr-thread"
pid 260837's current affinity list: 0,2-27 "telemetry-v2"
pid 260838's current affinity list: 1 "dpdk_watchdog69"
pid 260839's current affinity list: 1 "ovs_vhost70"
pid 260840's current affinity list: 30 "pmd-c30/id:71"
pid 260841's current affinity list: 31 "pmd-c31/id:72"
pid 260842's current affinity list: 28 "pmd-c28/id:73"
pid 260843's current affinity list: 29 "pmd-c29/id:74"
pid 260856's current affinity list: 1 "handler75" for netdev dataplane
pid 260857's current affinity list: 1 "revalidator76" for netdev dataplane
pid 260861's current affinity list: 1 "handler77" for system dataplane
pid 260862's current affinity list: 1 "handler78" for system dataplane
pid 260863's current affinity list: 1 "revalidator79" for system dataplane
Is there anying wrong here ?
It is the expected behaviour that threads are pinned to core 1 because
dpdk-lcore-mask is set. This mask is optional, you can just not set it
and you should have 0-27 affinity when dpdk is enabled.
Regards.
Chang Limin
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