Facing performance issue using python SDK in case of listing vm w.r.t perl SDK.

dbiswas91 — Mon, 27 Feb 2023 11:05:52 GMT

Below python SDK script taking about ~4 mili sec (which lists all required attributes).

real 0m4.137s
user 0m3.021s
sys 0m0.074s

similar script on perl VMware SDK taking 1 sec. Can someone help me improve the execution to nearly 1 mili sec similar to perl script.

[$$]# cat getallvms2.py #!/usr/bin/env python # VMware vSphere Python SDK # Copyright (c) 2008-2021 VMware, Inc. All Rights Reserved. # # 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 # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. """ Python program for listing the VMs on an ESX / vCenter host """ import re from pyVmomi import vmodl, vim from tools import cli, service_instance def print_vm_info(virtual_machine): """ Print information for a particular virtual machine or recurse into a folder with depth protection """ vm_config = {} summary = virtual_machine.summary host_ref = virtual_machine.runtime.host if not host_ref: print("Can't find host ref") accessibility = summary.runtime.connectionState extra_config = virtual_machine.config.extraConfig vname = summary.config.name uuid = summary.config.uuid if uuid: vm_config.update({ "uuid": uuid }) iuuid = summary.config.instanceUuid if iuuid: vm_config.update({ "instanceUuid": iuuid }) cversion = virtual_machine.config.version if cversion is not None: vm_config.update({ "version": cversion }) change_tracking_enable = virtual_machine.config.changeTrackingEnabled if change_tracking_enable is not None: vm_config.update({ "changeTrackingEnabled": "1" if change_tracking_enable else "0" }) change_tracking_support = virtual_machine.capability.changeTrackingSupported if change_tracking_support is not None: vm_config.update({ "changeTrackingSupported": "1" if change_tracking_support else "0"}) ctemplate = summary.config.template if ctemplate: vm_config.update({ "template": "1" if ctemplate else "0" }) gfullname = summary.config.guestFullName if gfullname: vm_config.update({"guestFullName": gfullname}) devs = virtual_machine.config.hardware.device extra_config = virtual_machine.config.extraConfig if extra_config: config_name = virtual_machine.config.name for entry in extra_config: if entry.key == 'unitrends.vm.type': if entry.value in ['instant_recovery_audit', 'replica_vm', 'virtual_appliance']: debug_message("Skipping VM %s since .it was created for VMware IR." % config_name) exclude_vm_from_inventory = 1 break print("Name : ", summary.config.name) print("Template : ", summary.config.template) print("Path : ", summary.config.vmPathName) print("Guest : ", summary.config.guestFullName) print("Instance UUID : ", summary.config.instanceUuid) print("Bios UUID : ", summary.config.uuid) annotation = summary.config.annotation if annotation: print("Annotation : ", annotation) print("State : ", summary.runtime.powerState) if summary.guest is not None: ip_address = summary.guest.ipAddress tools_version = summary.guest.toolsStatus if tools_version is not None: print("VMware-tools: ", tools_version) else: print("Vmware-tools: None") if ip_address: print("IP : ", ip_address) else: print("IP : None") if summary.runtime.question is not None: print("Question : ", summary.runtime.question.text) print("") def main(): """ Simple command-line program for listing the virtual machines on a system. """ parser = cli.Parser() parser.add_custom_argument('-f', '--find', required=False, action='store', help='String to match VM names') args = parser.get_args() si = service_instance.connect(args) try: content = si.RetrieveContent() container = content.rootFolder # starting point to look into view_type = [vim.VirtualMachine] # object types to look for recursive = True # whether we should look into it recursively container_view = content.viewManager.CreateContainerView( container, view_type, recursive) children = container_view.view if args.find is not None: pat = re.compile(args.find, re.IGNORECASE) for child in children: if args.find is None: print_vm_info(child) else: if pat.search(child.summary.config.name) is not None: print_vm_info(child) except vmodl.MethodFault as error: print("Caught vmodl fault : " + error.msg) return -1 return 0 # Start program if __name__ == "__main__": main()

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Facing performance issue using python SDK in case of listing vm w.r.t perl SDK.