CN107947887B - Clock system and method between a kind of server based on PTP protocol - Google Patents
Clock system and method between a kind of server based on PTP protocol Download PDFInfo
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- CN107947887B CN107947887B CN201711266973.XA CN201711266973A CN107947887B CN 107947887 B CN107947887 B CN 107947887B CN 201711266973 A CN201711266973 A CN 201711266973A CN 107947887 B CN107947887 B CN 107947887B
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- 108700009949 PTP protocol Proteins 0.000 title claims abstract description 23
- 230000001360 synchronised effect Effects 0.000 claims abstract description 44
- 230000002123 temporal effect Effects 0.000 claims abstract description 44
- 238000013461 design Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
- H04J3/0667—Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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Abstract
The present invention discloses clock system between a kind of server based on PTP protocol, it is related to server clock simultaneous techniques, default local clock starting when various regions server is switched on, PTP module drive is loaded after into operating system, and the PTP signal transmitted from satellite navigation information receiving end is obtained by access synchronized Ethernet switch；Various regions server parses PTP signal, obtains clock and temporal information, and clock information is supplied to system hardware, temporal information is synchronized to operating system.Server realizes high precision clock time synchronization between multiple servers by network PHY chip, IEEE1588 SMU chip, the network card chip Integration Design for supporting IEEE1588 synchronous, reduces cross-server time communication delay.The present invention can easily be deployed in each crucial application field, increase substantially the reliability using transaction；It also proposed clock synchronizing method between the server based on PTP protocol.
Description
Technical field
The present invention relates to server clock simultaneous techniques, clock between specifically a kind of server based on PTP protocol
Synchronization system and method.
Background technique
Certain applications more demanding for time synchronization, such as stock, futures, foreign exchange even network payment etc., to clothes
Clock synchronization requirement between business device is very high.
Currently, server is mostly using NTP simultaneous techniques, time synchronization can be normally reached 100ms or more, and
Hardware clock can not be synchronized.Higher and higher, NTP skill is required however, synchronizing in face of the application time that current sync is traded
Art is also increasingly difficult to adapt to this requirement.Therefore, it is badly in need of exploitation and designs the system that height clock is synchronous between a kind of server
Or method, realize the technological break-through that server time synchronizes.
Summary of the invention
The present invention is directed to the demand and shortcoming of current technology development, provides between a kind of server based on PTP protocol
Clock system and method.
Clock system and method between a kind of server based on PTP protocol of the present invention solve above-mentioned technology and ask
Topic is the technical solution adopted is as follows: clock system, system architecture include: between the server based on PTP protocol
Time signal for receiving time signal, and is changed into PTP signal and passes through network-side by satellite navigation information receiving end
Mouth output；
Synchronous ethernet interchanger supports the interchanger of synchronous ethernet agreement, supports the forwarding of PTP signal；
Various regions server, mutually generates between server and trades and be deployed in more ground, and various regions server is General Server；
PTP module is arranged in various regions server, receives PTP signal for server, and parse clock and temporal information；
Various regions server be switched on when default local clock starting, into operating system after load PTP module drive, pass through
Access synchronized Ethernet switch obtains the PTP signal transmitted from satellite navigation information receiving end；Various regions server is to PTP
Signal is parsed, and obtains clock and temporal information, and clock information is supplied to system hardware, temporal information is synchronized to operation
System.
Further, the satellite navigation information receiving end uses GPS or Beidou signal receiver；GPS or Beidou signal connect
It receives device to receive GPS or Beidou signal and parsed, obtains clock and temporal information, change into the PTP for meeting IEEE1588 standard
After signal, synchronous ethernet interchanger is sent to by Ethernet.
Further, clock system further includes several ground level interchangers between the server, and various regions server passes through respective
Ground level interchanger be connected to synchronous Ethernet switch.
Further, various regions server is respectively provided with:
Network PHY, the PTP signal transmitted for receiving network interface, network interface are connected to ground level interchanger and receive PTP
Signal；
IEEE1588 SMU chip is connected to network PHY, receives the 1PPS signal in PTP signal, carries out clock and synchronizes,
Clock needed for generating server internal chip；
Network card chip supports 1588 agreements, and network card chip is connected to network PHY, receives the time letter that network PHY is sent
It ceases, and temporal information is dealt into the PTP module under operating system, system will synchronize the time；
The temporal information received is constantly compared with the information that network card chip receives by PTP module, is finally obtained
Correct time is taken, control and GPS or the error of Beidou time are in a certain range.
Further, network interface uses the 88E1548 of Marvell using RJ45 or/and network PHY, or/and
IEEE1588 SMU chip uses the I350 of intel using the 82P33814 or/and network card chip of IDT.
Clock synchronizing method between a kind of server based on PTP protocol, comprising:
Step 1, server load PTP module；
Specifically, default starts from local clock when various regions server is switched on, into after operating system, server system adds
Carry PTP module；
Step 2, server obtain PTP signal；
Specifically, various regions server access synchronous ethernet interchanger, acquisition is transmitted across from satellite navigation information receiving end
The PTP signal come；
Step 3, server obtain clock and temporal information；
Specifically, various regions server parses PTP signal, clock and temporal information are obtained, and clock information is mentioned
Feed system hardware, temporal information are synchronized to operating system.
Further, the step 2,
GPS or Beidou signal receiver receive GPS or Beidou signal and are parsed, and obtain clock and temporal information, turn
Synchronous ethernet interchanger is sent to by Ethernet at after the PTP signal for meeting IEEE1588 standard；
Various regions server is obtained and is believed from GPS or Beidou by respective ground level switch-access synchronous ethernet interchanger
The PTP signal that number receiver transmits.
Further, the step 3,
The ground level interchanger that the network interface of various regions server is each connected to receives PTP signal, and sends network to
PHY, network PHY is by the 1PPS(pulse per second (PPS) in PTP signal) signal is sent to IEEE1588 SMU chip, IEEE1588 SMU core
It is synchronous that piece receives laggard row clock, and clock needed for generating server internal chip；
Meanwhile time signal is sent to the network card chip for supporting 1588 agreements by network PHY, network card chip receives the time
PTP module under operating system can be dealt into after information, system will synchronize the time.
Further, the step 3,
The temporal information received is constantly compared with the information that network card chip receives by PTP module, is finally obtained
Correct time is taken, control and GPS or the error of Beidou time are in a certain range.
Clock system and method between a kind of server based on PTP protocol of the present invention, compared with prior art
Have the beneficial effect that the present invention passes through support GPS/ Beidou signal receiver, the interchanger of support synchronous ethernet agreement
Mutually combined with the server of use PTP technology, various regions server passes through network PHY chip, IEEE1588 SMU chip, support
IEEE1588 synchronous network card chip Integration Design realizes the high precision clock time synchronization between more ground multiple servers,
Reduce cross-server time communication delay, effectively solves to need low transaction delay application demand；
Improve between server, particularly across computer room, cross-region server between timing tracking accuracy, Neng Goufang
Just be deployed in each crucial application field, it is ensured that the delay between server reaches 10us and answers hereinafter, can increase substantially
With the reliability of transaction.
Detailed description of the invention
Illustrate the embodiment of the present invention or technology contents in the prior art in order to clearer, below to the embodiment of the present invention
Or required attached drawing does simple introduction in the prior art.It will be apparent that attached drawing disclosed below is only of the invention one
Section Example to those skilled in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings, but within the scope of the present invention.
Attached drawing 1 is schematic diagram of the embodiment 1 based on clock system between the server of PTP protocol；
Attached drawing 2 is the schematic block diagram that 3 various regions server internal of embodiment passes through PTP protocol synchronization time.
Specific embodiment
The technical issues of to make technical solution of the present invention, solving and technical effect are more clearly understood, below in conjunction with tool
Body embodiment is checked technical solution of the present invention, is completely described, it is clear that described embodiment is only this hair
Bright a part of the embodiment, instead of all the embodiments.Based on the embodiment of the present invention, those skilled in the art are not doing
All embodiments obtained under the premise of creative work out, all within protection scope of the present invention.
Embodiment 1:
The present embodiment proposes clock system between a kind of server based on PTP protocol, as shown in Fig. 1, system
Framework includes:
Time signal for receiving time signal, and is changed into PTP signal and passes through network-side by satellite navigation information receiving end
Mouth output；PTP signal is accurate clock synchronization protocol signal；
Synchronous ethernet interchanger supports the forwarding of PTP signal for the interchanger for supporting synchronous ethernet agreement；
Several servers mutually generate between server and trade and be deployed in more ground, and various regions server is General Server,
And PTP module is arranged in server, is that server receives PTP signal and can parse clock and temporal information.
Clock system between the present embodiment server, default local clock starting when various regions server is switched on, into behaviour
PTP module drive is loaded after making system, is obtained by access synchronized Ethernet switch from satellite navigation information receiving end and is transmitted
The PTP signal to come over；Various regions server parses PTP signal, obtains clock and temporal information, and clock information is provided
To system hardware, temporal information is synchronized to operating system.
The present embodiment also proposes clock synchronizing method between a kind of server based on PTP protocol, technical solution and implements
Clock system can be cross-referenced between 1 server of example, and implementation process includes:
Step 1, server load PTP module；
Specifically, default starts from local clock when various regions server is switched on, into after operating system, server system adds
Carry PTP module.
Step 2, server obtain PTP signal；
Specifically, various regions server access synchronous ethernet interchanger, acquisition is transmitted across from satellite navigation information receiving end
The PTP signal come.
Step 3, server obtain clock and temporal information；
Specifically, various regions server parses PTP signal, clock and temporal information are obtained, and clock information is mentioned
Feed system hardware, temporal information are synchronized to operating system.
Embodiment 2:
Clock system between a kind of server based on PTP protocol that the present embodiment proposes, on the basis of embodiment 1
On, satellite navigation information receiving end specifically uses GPS or Beidou signal receiver, further increase technical solution practicability and
Feasibility.
The satellite navigation information receiving end uses GPS or Beidou signal receiver, wherein GPS is US Global positioning
System, Beidou are Chinese Beidou Navigation Systems, are abbreviated as BDS(BeiDou Navigation Satellite System)；GPS
Or Beidou signal receiver receives GPS or Beidou signal and is parsed, and clock and temporal information is obtained, after changing into PTP signal
It is sent to synchronous ethernet interchanger by Ethernet, PTP signal enters public network.
Clock system further includes several ground level interchangers between the server, and ground level interchanger is connected to synchronous ethernet
Interchanger receives PTP signal by respective ground level interchanger (can be deployed in local computer room) for various regions server.
The present embodiment also proposes clock synchronizing method between a kind of server based on PTP protocol, technical solution and implements
Clock system can be cross-referenced between 2 server of example, and implementation process includes:
Step 1, server load PTP module；
Specifically, default starts from local clock when various regions server is switched on, into after operating system, server system adds
Carry PTP module.
Step 2, server obtain PTP signal；
Specifically, various regions server by respective ground level switch-access synchronous ethernet interchanger, obtain from GPS or
The PTP signal that Beidou signal receiver transmits.
Further, GPS or Beidou signal receiver receive GPS or Beidou signal and are parsed, and obtain clock and time
Information changes into after PTP signal and is sent to synchronous ethernet interchanger by Ethernet.
Step 3, server obtain clock and temporal information；
Specifically, various regions server parses PTP signal, clock and temporal information are obtained, and clock information is mentioned
Feed system hardware, temporal information are synchronized to operating system.
Embodiment 3:
Clock synchronizing method between a kind of server based on PTP protocol that the present embodiment proposes, on the basis of embodiment 2
On, a kind of specific technical solution that server obtains clock and temporal information is increased, overall technology content is further improved, is increased
The strong feasibility of the technical solution of the present embodiment.Except following technical proposals, when various regions server internal is synchronous by PTP protocol
Between used by other schemes, as long as can be realized the purpose of synchronization time between server, in the protection scope of the present embodiment
Within.
Clock synchronizing method between the present embodiment server, between 2 server of embodiment on the basis of clock synchronizing method, clothes
Business device obtains the detailed process of clock and temporal information are as follows:
GPS/ Beidou signal receiver receives GPS/ Beidou time signal, and the time of GPS signal and clock information are changed into
The PTP signal for meeting IEEE1588 standard is externally exported by Ethernet；Synchronous ethernet interchanger receives Ethernet PTP letter
Number, time and clock information signal are transmitted to the rudimentary interchanger in various regions by supported protocol forwarding.
The network interface (generally RJ45) of various regions server connects respective ground level interchanger reception and meets IEEE1588 mark
Quasi- PTP signal, and it is transferred to network PHY, network PHY can use the 88E1548 of Marvell here；Network PHY is by PTP
1PPS(pulse per second (PPS) in signal) signal is sent to IEEE1588 SMU chip (management by synchronization unit), IEEE1588 SMU chip
The 82P33814 of IDT can be used；It is synchronous that IEEE1588 SMU chip receives laggard row clock, and generates server internal chip
Required clock, such as the 100MHz signal of CPU, PCIE device etc.；
Meanwhile time signal is sent to the network card chip for supporting 1588 agreements by network PHY, network card chip can use
The I350 of intel, network card chip can be dealt into PTP module under operating system after receiving temporal information, and system will carry out together the time
Step.
Further, the temporal information received is constantly compared with the information that network card chip receives by PTP module,
It is final to obtain correct time, control and GPS or the error of Beidou time in a certain range, such as no more than 10US.
The present embodiment also proposes clock system between a kind of server based on PTP protocol, between 2 server of embodiment
On the basis of clock system, a kind of technical solution of various regions server is increased, technical solution can take with embodiment 3
Clock synchronizing method is cross-referenced between business device.
Clock system between the server is respectively provided on the server of various regions as shown in Fig. 2:
Network PHY, the PTP signal transmitted for receiving network interface, network interface are connected to ground level server and receive symbol
Close the PTP signal of IEEE1588 standard；
Specifically, network interface generally uses RJ45 interface, network PHY can use the 88E1548 of Marvell.
IEEE1588 SMU chip is connected to network PHY, receives the 1PPS signal in PTP signal, carries out clock and synchronizes,
Clock, such as the 100MHz signal of CPU, PCIE device needed for generating server internal chip etc..
Specifically, IEEE1588 SMU chip can use the 82P33814 of IDT.
Network card chip supports 1588 agreements, and network card chip is connected to network PHY, receives the time letter that network PHY is sent
It ceases, and temporal information is dealt into the PTP module under operating system, system will synchronize the time.
Specifically, network card chip can use the I350 of intel；PTP module by the temporal information received constantly with
The information that network card chip receives is compared, and finally obtains correct time, control is with GPS or the error of Beidou time one
Determine in range, such as no more than 10US.
Clock system between the present embodiment server, various regions server pass through Hardware(hardware), Kernel
Space(operating system nucleus), User Space(operating system PTP module) common cooperation, connect by Hardware by network
Mouth receives the PTP signal of IEEE1588 standard, calls trawl performance to send operation system for temporal information by Kernel Space
System, is compared the information that the temporal information received is constantly received with network interface card by the PTP module under User Space
It is right, finally obtain correct time, it is ensured that in a certain range with GPS or the control of Beidou time error, realize that system time is same
Step.
Use above specific case elaborates the principle of the present invention and embodiment, these embodiments are
It is used to help understand core of the invention technology contents, the protection scope being not intended to restrict the invention, technical side of the invention
Case is not limited in above-mentioned specific embodiment.Based on above-mentioned specific embodiment of the invention, those skilled in the art
Without departing from the principle of the present invention, any improvement and modification to made by the present invention should all be fallen into of the invention special
Sharp protection scope.
Claims (4)
1. clock system between a kind of server based on PTP protocol, which is characterized in that its system architecture includes:
Satellite navigation information receiving end, for receiving time signal, and it is defeated by the network port that time signal changed into PTP signal
Out；The satellite navigation information receiving end uses GPS or Beidou signal receiver；The GPS or Beidou signal receiver receive
GPS or Beidou signal are simultaneously parsed, and are obtained clock and temporal information, are sent out after changing into the PTP signal for meeting IEEE1588 standard
It is sent to synchronous ethernet interchanger；
Synchronous ethernet interchanger supports the interchanger of synchronous ethernet agreement, supports the forwarding of PTP signal；
Various regions server, mutually generates between server and trades and be deployed in more ground, and various regions server is General Server；Various regions
PTP module is arranged in server, receives PTP signal for server, and parse clock and temporal information；It further include that several ground levels are handed over
It changes planes, various regions server is connected to synchronous Ethernet switch by respective ground level interchanger；
The various regions server is respectively provided with: network PHY, and the PTP signal transmitted for receiving network interface, network interface is connected to
Ground level interchanger receives PTP signal；IEEE1588 SMU chip is connected to network PHY, receives the 1PPS signal in PTP signal,
It is synchronous to carry out clock, clock needed for generating server internal chip；Network card chip supports 1588 agreements, network card chip connection
To network PHY, the temporal information that network PHY is sent is received, and temporal information is dealt into the PTP module under operating system, system
It will synchronize time；The temporal information received is constantly compared with the information that network card chip receives by PTP module,
Final to obtain correct time, control and GPS or the error of Beidou time are in a certain range；
The various regions server be switched on when default local clock starting, into operating system after load PTP module drive, pass through
It accesses the synchronous ethernet interchanger and obtains the PTP signal transmitted from satellite navigation information receiving end；The various regions clothes
Business device parses PTP signal, obtains clock and temporal information, and clock information is supplied to system hardware, temporal information
It is synchronized to operating system.
2. clock system between a kind of server based on PTP protocol according to claim 1, which is characterized in that described
Network interface uses the 88E1548 or/and the IEEE1588 SMU core of Marvell using RJ45 or/and the network PHY
Piece uses the I350 of intel using the 82P33814 of IDT or/and the network card chip.
3. clock synchronizing method between a kind of server based on PTP protocol characterized by comprising
Step 1, server load PTP module；
Default starts from local clock when various regions server is switched on, and into after operating system, server system loads PTP module；
Step 2, server obtain PTP signal；
Server access synchronous ethernet interchanger in various regions obtains the PTP signal transmitted from satellite navigation information receiving end；
GPS or Beidou signal receiver receive GPS or Beidou signal and are parsed, and obtain clock and temporal information, change into symbol
Synchronous ethernet interchanger is sent to by Ethernet after the PTP signal of conjunction IEEE1588 standard；The various regions server passes through
Respective ground level switch-access synchronous ethernet interchanger, what acquisition was transmitted from the GPS or Beidou signal receiver
PTP signal；
Step 3, server obtain clock and temporal information；
Various regions server parses PTP signal, obtains clock and temporal information, and it is hard that clock information is supplied to system
Part, temporal information are synchronized to operating system；
The ground level interchanger that the network interface of the various regions server is each connected to receives PTP signal, and sends network to
PHY, the 1PPS signal in PTP signal is sent to IEEE1588 SMU chip by network PHY, after IEEE1588 SMU chip receives
It is synchronous to carry out clock, and clock needed for generating server internal chip；
Meanwhile time signal is sent to the network card chip for supporting 1588 agreements by network PHY, network card chip receives temporal information
After can be dealt into PTP module under operating system, system will synchronize the time；
The temporal information received is constantly compared with the information that network card chip receives by the PTP module, is finally obtained
Correct time is taken, control and GPS or the error of Beidou time are in a certain range.
4. clock synchronizing method between a kind of server based on PTP protocol according to claim 3, it is characterised in that the net
Network interface is used using RJ45 or/and the network PHY using 88E1548 the or/and IEEE1588 SMU chip of Marvell
The 82P33814 or/and network card chip of IDT uses the I350 of intel.
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| CN111163011B (en) * | 2020-01-19 | 2022-05-13 | 烟台持久钟表有限公司 | Data processing method of wireless router based on PTP (precision time protocol) |
| CN111510235A (en) * | 2020-03-13 | 2020-08-07 | 浙江华创视讯科技有限公司 | Audio clock synchronization method, device, system, computer device and storage medium |
| CN112020133B (en) * | 2020-07-29 | 2022-12-27 | 苏州浪潮智能科技有限公司 | Edge calculation server design method for multi-strategy high-precision clock synchronization |
| CN114157378A (en) * | 2021-11-30 | 2022-03-08 | 浪潮云信息技术股份公司 | ZNBase-based performance optimization method and system for sea light platform |
| CN114157380B (en) * | 2021-12-02 | 2023-10-13 | 上海沄熹科技有限公司 | ZNBASE distributed database clock synchronization method and system |
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| CN103338102A (en) * | 2013-07-08 | 2013-10-02 | 国核电力规划设计研究院 | Time synchronization system in nuclear power plant |
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| CN101645869A (en) * | 2008-08-07 | 2010-02-10 | 上海思弘瑞电力控制技术有限公司 | Switch with submicrosecond clock and switching processing method thereof |
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