Hello, I looked into this, and as far as I can tell, this is for redhat-based kvm, not vmware. Am I missing something?
Here is what I get when I try and load ptp_kvm: modprobe ptp_kvm modprobe: ERROR: could not insert 'ptp_kvm': No such device From: Hussamuddin Nasir <na...@netlab.uky.edu> Sent: Friday, November 5, 2021 05:53 To: Brooks, Jason <jason.bro...@allstream.com>; linuxptp-users@lists.sourceforge.net Subject: [External]Re: [Linuxptp-users] running ptp4l under vmware CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. You have to use the ptp_kvm linux module for this. See https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_deployment_and_administration_guide/chap-kvm_guest_timing_management#sect-KVM_guest_timing_management-Host-guest-time-sync<https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Faccess.redhat.com%2Fdocumentation%2Fen-us%2Fred_hat_enterprise_linux%2F7%2Fhtml%2Fvirtualization_deployment_and_administration_guide%2Fchap-kvm_guest_timing_management%23sect-KVM_guest_timing_management-Host-guest-time-sync&data=04%7C01%7CJason.Brooks%40Allstream.com%7Cbb6b20b093e0432d06bb08d9a05b24e8%7Cd0484f44efdf4959a2734163a45cd363%7C0%7C0%7C637717135604662108%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=hYKnZIA09NLEQy00rKUanxgll6ofXXdXb7xye2QxFZg%3D&reserved=0> -- cheers, Hussam (Hussamuddin Nasir) Netlab & GENI Operations Team ------------------------------------------------------------------- Laboratory for Adv. Networking Phone : (859)218-0059 James F Hardymon Building Fax : (859)323-3740 301 Rose Street, Rm 237 E-mail : na...@netlab.uky.edu<mailto:na...@netlab.uky.edu> Lexington, KY 40506-0495 Web : http://www.netlab.uky.edu<https://can01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.netlab.uky.edu%2F&data=04%7C01%7CJason.Brooks%40Allstream.com%7Cbb6b20b093e0432d06bb08d9a05b24e8%7Cd0484f44efdf4959a2734163a45cd363%7C0%7C0%7C637717135604672065%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=d5oj5KkVppHMPdNbVfxjkS%2B67S1NnQW2%2FHsw9bzPJbw%3D&reserved=0> University of Kentucky ********************** ------------------------------------------------------------------- On 11/4/21 15:47, Brooks, Jason wrote: Hello, I am trying to build a proof-of-concept systems that will listen for ptp and then serve ntp, but I seem to have a problem: the clock on the system does not seem to get set by ptp, and therefore the clock drifts. I have a test system that uses multiple internet ntp sources and this one: this one's offset keeps growing. I don't see any sign in /var/log/messages that the clock is trying to be slewed or stepped. This is a centos 7 system running under vmware 6.7 (no precision clock available). It is using the ethernet device "e1000" to allow the ethernet software timestamping for both transmit and receive. There is no /dev/ptp device so phc2sys is not running. There are two grandmaster ptp feeds coming into this system. Upgrading to vmware 7 is not in the cards at the moment, but I might get to play with sr-iov. I am running ptp4l as: "/usr/sbin/ptp4l -f /etc/ptp4l.conf -i ens34 -l 5 -S" Ptp4l is configured with the following values altered in the /etc/ptp4l.conf: domainNumber == 44 slaveOnly == 1 ntpd is running with a minimal config: server 127.127.1.0 fudge 127.127.1.0 stratum 0 pmc "GET time_status_np" shows that ptp4l is synced with the grand master sending: GET TIME_STATUS_NP 005056.fffe.be1c0f-0 seq 0 RESPONSE MANAGEMENT TIME_STATUS_NP master_offset 0 ingress_time 1636054977549001043 cumulativeScaledRateOffset +0.000000000 scaledLastGmPhaseChange 0 gmTimeBaseIndicator 0 lastGmPhaseChange 0x0000'0000000000000000.0000 gmPresent true gmIdentity 0080ea.fffe.842b60 pmc -u -b 0 -f /etc/ptp4l.conf "GET current_data_set" sending: GET CURRENT_DATA_SET 005056.fffe.be1c0f-0 seq 0 RESPONSE MANAGEMENT CURRENT_DATA_SET stepsRemoved 1 offsetFromMaster 0.0 meanPathDelay 0.0 Jason Brooks Senior Cloud Infrastructure Engineer Infrastructure and Engineering Services Allstream [id:image001.jpg@01D2AD47.F9210620]<http://www.allstream.com/> NOTICE - CONFIDENTIAL INFORMATION This communication is the property of Allstream and may contain confidential or privileged information. If you have received this communication in error, please promptly notify the sender by reply e-mail, do not disseminate, distribute, copy or use the information contained in this communication, and destroy all copies of the communication and any attachments. AVIS - RENSEIGNEMENTS CONFIDENTIELS Cette communication est la propriété d'Allstream et peut contenir des renseignements confidentiels ou privilégiés. Si vous avez reçu cette communication par erreur, veuillez informer rapidement l'expéditeur en répondant par courriel, ne pas diffuser, distribuer, copier ou utiliser les renseignements contenus dans la présente communication, et détruire toutes les copies de la communication et ses pièces jointes. _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net<mailto:Linuxptp-users@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/linuxptp-users<https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Flinuxptp-users&data=04%7C01%7CJason.Brooks%40Allstream.com%7Cbb6b20b093e0432d06bb08d9a05b24e8%7Cd0484f44efdf4959a2734163a45cd363%7C0%7C0%7C637717135604682019%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=vbdlZlPnb0IbUCiPgwkPv1EwsjVLNdJxNxlT494PLU8%3D&reserved=0>
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