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-rw-r--r--resources/libraries/python/InterfaceUtil.py35
1 files changed, 32 insertions, 3 deletions
diff --git a/resources/libraries/python/InterfaceUtil.py b/resources/libraries/python/InterfaceUtil.py
index 04fdff7cac..00a1933196 100644
--- a/resources/libraries/python/InterfaceUtil.py
+++ b/resources/libraries/python/InterfaceUtil.py
@@ -20,6 +20,7 @@ from ipaddress import ip_address
from robot.api import logger
from resources.libraries.python.Constants import Constants
+from resources.libraries.python.CpuUtils import CpuUtils
from resources.libraries.python.DUTSetup import DUTSetup
from resources.libraries.python.IPAddress import IPAddress
from resources.libraries.python.L2Util import L2Util
@@ -1711,17 +1712,29 @@ class InterfaceUtil:
papi_exec.add(cmd, **args).get_reply(err_msg)
@staticmethod
- def vpp_round_robin_rx_placement(node, prefix):
+ def vpp_round_robin_rx_placement(
+ node, prefix, dp_worker_limit=None
+ ):
"""Set Round Robin interface RX placement on all worker threads
on node.
+ If specified, dp_core_limit limits the number of physical cores used
+ for data plane I/O work. Other cores are presumed to do something else,
+ e.g. asynchronous crypto processing.
+ None means all workers are used for data plane work.
+ Note this keyword specifies workers, not cores.
+
:param node: Topology nodes.
:param prefix: Interface name prefix.
+ :param dp_worker_limit: How many cores for data plane work.
:type node: dict
:type prefix: str
+ :type dp_worker_limit: Optional[int]
"""
worker_id = 0
worker_cnt = len(VPPUtil.vpp_show_threads(node)) - 1
+ if dp_worker_limit is not None:
+ worker_cnt = min(worker_cnt, dp_worker_limit)
if not worker_cnt:
return
for placement in InterfaceUtil.vpp_sw_interface_rx_placement_dump(node):
@@ -1735,15 +1748,31 @@ class InterfaceUtil:
worker_id += 1
@staticmethod
- def vpp_round_robin_rx_placement_on_all_duts(nodes, prefix):
+ def vpp_round_robin_rx_placement_on_all_duts(
+ nodes, prefix, dp_core_limit=None
+ ):
"""Set Round Robin interface RX placement on all worker threads
on all DUTs.
+ If specified, dp_core_limit limits the number of physical cores used
+ for data plane I/O work. Other cores are presumed to do something else,
+ e.g. asynchronous crypto processing.
+ None means all cores are used for data plane work.
+ Note this keyword specifies cores, not workers.
+
:param nodes: Topology nodes.
:param prefix: Interface name prefix.
+ :param dp_worker_limit: How many cores for data plane work.
:type nodes: dict
:type prefix: str
+ :type dp_worker_limit: Optional[int]
"""
for node in nodes.values():
if node[u"type"] == NodeType.DUT:
- InterfaceUtil.vpp_round_robin_rx_placement(node, prefix)
+ dp_worker_limit = CpuUtils.worker_count_from_cores_and_smt(
+ phy_cores=dp_core_limit,
+ smt_used=CpuUtils.is_smt_enabled(node[u"cpuinfo"]),
+ )
+ InterfaceUtil.vpp_round_robin_rx_placement(
+ node, prefix, dp_worker_limit
+ )