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authorPeter Mikus <pmikus@cisco.com>2020-01-30 13:45:11 +0000
committerPeter Mikus <pmikus@cisco.com>2020-01-31 15:57:36 +0000
commit6bcf4d40d83bbf026f9fd0105bebf579423c65a6 (patch)
treef223e6562f15fc7544b339d3317d2a42ae073588 /resources/libraries
parent47a26ef592c8b3f321fd69e053748606feba09f5 (diff)
T-Rex: CPU pinning
+ Detect NUMA + Pin based on numa location Signed-off-by: Peter Mikus <pmikus@cisco.com> Change-Id: Ife350f8c70e5437ac7c1413c7753f2a2f62777d9
Diffstat (limited to 'resources/libraries')
-rw-r--r--resources/libraries/python/CpuUtils.py47
-rw-r--r--resources/libraries/python/InterfaceUtil.py92
-rw-r--r--resources/libraries/python/TrafficGenerator.py31
3 files changed, 73 insertions, 97 deletions
diff --git a/resources/libraries/python/CpuUtils.py b/resources/libraries/python/CpuUtils.py
index 842c16d7ef..e4fff010f1 100644
--- a/resources/libraries/python/CpuUtils.py
+++ b/resources/libraries/python/CpuUtils.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
@@ -141,7 +141,7 @@ class CpuUtils:
@staticmethod
def cpu_slice_of_list_per_node(
node, cpu_node, skip_cnt=0, cpu_cnt=0, smt_used=False):
- """Return string of node related list of CPU numbers.
+ """Return node related subset of list of CPU numbers.
:param node: Node dictionary with cpuinfo.
:param cpu_node: Numa node number.
@@ -283,12 +283,6 @@ class CpuUtils:
dtc_is_integer = isinstance(nf_dtc, int)
if not smt_used and not dtc_is_integer:
raise RuntimeError(u"Cannot allocate if SMT is not enabled!")
- # TODO: Please reword the following todo if it is still relevant
- # TODO: Workaround as we are using physical core as main unit, we must
- # adjust number of physical dataplane cores in case of float for further
- # array referencing. As rounding method in Py2.7 and Py3.x differs, we
- # are using static mapping. This can be rewritten using flat arrays and
- # different logic (from Physical core unit to Logical core unit).
if not dtc_is_integer:
nf_dtc = 1
@@ -361,3 +355,40 @@ class CpuUtils:
nf_nodes=nf_nodes, nf_chain=nf_chain, nf_node=nf_node,
nf_mtcr=nf_mtcr, nf_dtcr=nf_dtcr, nf_dtc=nf_dtc, skip_cnt=skip_cnt
)
+
+ @staticmethod
+ def get_affinity_trex(
+ node, if1_pci, if2_pci, tg_mtc=1, tg_dtc=1, tg_ltc=1):
+ """Get affinity for T-Rex. Result will be used to pin T-Rex threads.
+
+ :param node: TG node.
+ :param if1_pci: TG first interface.
+ :param if2_pci: TG second interface.
+ :param tg_mtc: TG main thread count.
+ :param tg_dtc: TG dataplane thread count.
+ :param tg_ltc: TG latency thread count.
+ :type node: dict
+ :type if1_pci: str
+ :type if2_pci: str
+ :type tg_mtc: int
+ :type tg_dtc: int
+ :type tg_ltc: int
+ :returns: List of CPUs allocated to T-Rex including numa node.
+ :rtype: int, int, int, list
+ """
+ interface_list = [if1_pci, if2_pci]
+ cpu_node = Topology.get_interfaces_numa_node(node, *interface_list)
+
+ master_thread_id = CpuUtils.cpu_slice_of_list_per_node(
+ node, cpu_node, skip_cnt=0, cpu_cnt=tg_mtc,
+ smt_used=False)
+
+ threads = CpuUtils.cpu_slice_of_list_per_node(
+ node, cpu_node, skip_cnt=tg_mtc, cpu_cnt=tg_dtc,
+ smt_used=False)
+
+ latency_thread_id = CpuUtils.cpu_slice_of_list_per_node(
+ node, cpu_node, skip_cnt=tg_mtc + tg_dtc, cpu_cnt=tg_ltc,
+ smt_used=False)
+
+ return master_thread_id[0], latency_thread_id[0], cpu_node, threads
diff --git a/resources/libraries/python/InterfaceUtil.py b/resources/libraries/python/InterfaceUtil.py
index 0f18f8f807..3e2e38ef81 100644
--- a/resources/libraries/python/InterfaceUtil.py
+++ b/resources/libraries/python/InterfaceUtil.py
@@ -113,8 +113,6 @@ class RdmaMode(IntEnum):
class InterfaceUtil:
"""General utilities for managing interfaces"""
- __UDEV_IF_RULES_FILE = u"/etc/udev/rules.d/10-network.rules"
-
@staticmethod
def pci_to_int(pci_str):
"""Convert PCI address from string format (0000:18:0a.0) to
@@ -542,45 +540,6 @@ class InterfaceUtil:
return DUTSetup.get_pci_dev_driver(node, pci_addr)
@staticmethod
- def tg_set_interfaces_udev_rules(node):
- """Set udev rules for interfaces.
-
- Create udev rules file in /etc/udev/rules.d where are rules for each
- interface used by TG node, based on MAC interface has specific name.
- So after unbind and bind again to kernel driver interface has same
- name as before. This must be called after TG has set name for each
- port in topology dictionary.
- udev rule example
- SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="52:54:00:e1:8a:0f",
- NAME="eth1"
-
- :param node: Node to set udev rules on (must be TG node).
- :type node: dict
- :raises RuntimeError: If setting of udev rules fails.
- """
- ssh = SSH()
- ssh.connect(node)
-
- cmd = f"rm -f {InterfaceUtil.__UDEV_IF_RULES_FILE}"
- ret_code, _, _ = ssh.exec_command_sudo(cmd)
- if int(ret_code) != 0:
- raise RuntimeError(f"'{cmd}' failed on '{node[u'host']}'")
-
- for interface in node[u"interfaces"].values():
- rule = u'SUBSYSTEM==\\"net\\", ACTION==\\"add\\", ATTR{address}' + \
- u'==\\"' + interface[u"mac_address"] + u'\\", NAME=\\"' + \
- interface[u"name"] + u'\\"'
- cmd = f"sh -c \"echo '{rule}'\" >> " \
- f"{InterfaceUtil.__UDEV_IF_RULES_FILE}'"
-
- ret_code, _, _ = ssh.exec_command_sudo(cmd)
- if int(ret_code) != 0:
- raise RuntimeError(f"'{cmd}' failed on '{node[u'host']}'")
-
- cmd = u"/etc/init.d/udev restart"
- ssh.exec_command_sudo(cmd)
-
- @staticmethod
def tg_set_interfaces_default_driver(node):
"""Set interfaces default driver specified in topology yaml file.
@@ -667,7 +626,7 @@ class InterfaceUtil:
InterfaceUtil.update_nic_interface_names(node)
@staticmethod
- def update_tg_interface_data_on_node(node, skip_tg_udev=False):
+ def update_tg_interface_data_on_node(node):
"""Update interface name for TG/linux node in DICT__nodes.
.. note::
@@ -679,9 +638,7 @@ class InterfaceUtil:
"00:00:00:00:00:00": "lo"
:param node: Node selected from DICT__nodes.
- :param skip_tg_udev: Skip udev rename on TG node.
:type node: dict
- :type skip_tg_udev: bool
:raises RuntimeError: If getting of interface name and MAC fails.
"""
# First setup interface driver specified in yaml file
@@ -706,10 +663,6 @@ class InterfaceUtil:
continue
interface[u"name"] = name
- # Set udev rules for interfaces
- if not skip_tg_udev:
- InterfaceUtil.tg_set_interfaces_udev_rules(node)
-
@staticmethod
def iface_update_numa_node(node):
"""For all interfaces from topology file update numa node based on
@@ -752,25 +705,8 @@ class InterfaceUtil:
raise RuntimeError(f"Update numa node failed for: {if_pci}")
@staticmethod
- def update_all_numa_nodes(nodes, skip_tg=False):
- """For all nodes and all their interfaces from topology file update numa
- node information based on information from the node.
-
- :param nodes: Nodes in the topology.
- :param skip_tg: Skip TG node
- :type nodes: dict
- :type skip_tg: bool
- :returns: Nothing.
- """
- for node in nodes.values():
- if node[u"type"] == NodeType.DUT:
- InterfaceUtil.iface_update_numa_node(node)
- elif node[u"type"] == NodeType.TG and not skip_tg:
- InterfaceUtil.iface_update_numa_node(node)
-
- @staticmethod
def update_all_interface_data_on_all_nodes(
- nodes, skip_tg=False, skip_tg_udev=False, numa_node=False):
+ nodes, skip_tg=False, skip_vpp=False):
"""Update interface names on all nodes in DICT__nodes.
This method updates the topology dictionary by querying interface lists
@@ -778,25 +714,17 @@ class InterfaceUtil:
:param nodes: Nodes in the topology.
:param skip_tg: Skip TG node.
- :param skip_tg_udev: Skip udev rename on TG node.
- :param numa_node: Retrieve numa_node location.
+ :param skip_vpp: Skip VPP node.
:type nodes: dict
:type skip_tg: bool
- :type skip_tg_udev: bool
- :type numa_node: bool
+ :type skip_vpp: bool
"""
- for node_data in nodes.values():
- if node_data[u"type"] == NodeType.DUT:
- InterfaceUtil.update_vpp_interface_data_on_node(node_data)
- elif node_data[u"type"] == NodeType.TG and not skip_tg:
- InterfaceUtil.update_tg_interface_data_on_node(
- node_data, skip_tg_udev)
-
- if numa_node:
- if node_data[u"type"] == NodeType.DUT:
- InterfaceUtil.iface_update_numa_node(node_data)
- elif node_data[u"type"] == NodeType.TG and not skip_tg:
- InterfaceUtil.iface_update_numa_node(node_data)
+ for node in nodes.values():
+ if node[u"type"] == NodeType.DUT and not skip_vpp:
+ InterfaceUtil.update_vpp_interface_data_on_node(node)
+ elif node[u"type"] == NodeType.TG and not skip_tg:
+ InterfaceUtil.update_tg_interface_data_on_node(node)
+ InterfaceUtil.iface_update_numa_node(node)
@staticmethod
def create_vlan_subinterface(node, interface, vlan):
diff --git a/resources/libraries/python/TrafficGenerator.py b/resources/libraries/python/TrafficGenerator.py
index 8976dff348..1b519d5713 100644
--- a/resources/libraries/python/TrafficGenerator.py
+++ b/resources/libraries/python/TrafficGenerator.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2019 Cisco and/or its affiliates.
+# Copyright (c) 2020 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
@@ -19,6 +19,7 @@ from robot.api import logger
from robot.libraries.BuiltIn import BuiltIn
from .Constants import Constants
+from .CpuUtils import CpuUtils
from .DropRateSearch import DropRateSearch
from .MLRsearch.AbstractMeasurer import AbstractMeasurer
from .MLRsearch.MultipleLossRatioSearch import MultipleLossRatioSearch
@@ -278,6 +279,11 @@ class TrafficGenerator(AbstractMeasurer):
if1_adj_addr, if2_adj_addr = if2_adj_addr, if1_adj_addr
self._ifaces_reordered = True
+ master_thread_id, latency_thread_id, socket, threads = \
+ CpuUtils.get_affinity_trex(
+ self._node, tg_if1, tg_if2,
+ tg_dtc=Constants.TREX_CORE_COUNT)
+
if osi_layer in (u"L2", u"L3"):
dst_mac0 = f"0x{if1_adj_addr.replace(u':', u',0x')}"
src_mac0 = f"0x{if1_addr.replace(u':', u',0x')}"
@@ -287,6 +293,7 @@ class TrafficGenerator(AbstractMeasurer):
self._node,
f"sh -c 'cat << EOF > /etc/trex_cfg.yaml\n"
f"- version: 2\n"
+ f" c: {len(threads)}\n"
f" limit_memory: {Constants.TREX_LIMIT_MEMORY}\n"
f" interfaces: [\"{if1_pci}\",\"{if2_pci}\"]\n"
f" port_info:\n"
@@ -294,14 +301,21 @@ class TrafficGenerator(AbstractMeasurer):
f" src_mac: [{src_mac0}]\n"
f" - dest_mac: [{dst_mac1}]\n"
f" src_mac: [{src_mac1}]\n"
+ f" platform :\n"
+ f" master_thread_id: {master_thread_id}\n"
+ f" latency_thread_id: {latency_thread_id}\n"
+ f" dual_if:\n"
+ f" - socket: {socket}\n"
+ f" threads: {threads}\n"
f"EOF'",
- sudo=True, message=u"TRex config generation error"
+ sudo=True, message=u"TRex config generation!"
)
elif osi_layer == u"L7":
exec_cmd_no_error(
self._node,
f"sh -c 'cat << EOF > /etc/trex_cfg.yaml\n"
f"- version: 2\n"
+ f" c: {len(threads)}\n"
f" limit_memory: {Constants.TREX_LIMIT_MEMORY}\n"
f" interfaces: [\"{if1_pci}\",\"{if2_pci}\"]\n"
f" port_info:\n"
@@ -309,11 +323,17 @@ class TrafficGenerator(AbstractMeasurer):
f" default_gw: [{if1_adj_addr}]\n"
f" - ip: [{if2_addr}]\n"
f" default_gw: [{if2_adj_addr}]\n"
+ f" platform :\n"
+ f" master_thread_id: {master_thread_id}\n"
+ f" latency_thread_id: {latency_thread_id}\n"
+ f" dual_if:\n"
+ f" - socket: {socket}\n"
+ f" threads: {threads}\n"
f"EOF'",
- sudo=True, message=u"TRex config generation error"
+ sudo=True, message=u"TRex config generation!"
)
else:
- raise ValueError(u"Unknown Test Type")
+ raise ValueError(u"Unknown Test Type!")
self._startup_trex(osi_layer)
@@ -348,7 +368,6 @@ class TrafficGenerator(AbstractMeasurer):
cd_cmd = f"cd '{Constants.TREX_INSTALL_DIR}/scripts/'"
trex_cmd = OptionString([u"nohup", u"./t-rex-64"])
trex_cmd.add(u"-i")
- trex_cmd.add(f"-c {Constants.TREX_CORE_COUNT}")
trex_cmd.add(u"--prefix $(hostname)")
trex_cmd.add(u"--hdrh")
trex_cmd.add(u"--no-scapy-server")
@@ -392,8 +411,6 @@ class TrafficGenerator(AbstractMeasurer):
:rtype: bool
:raises RuntimeError: If node type is not a TG.
"""
- # No need to check subtype, we know it is TREX.
-
ret, _, _ = exec_cmd(node, u"pidof t-rex", sudo=True)
return bool(int(ret) == 0)