CN107947887A - 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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- CN107947887A CN107947887A CN201711266973.XA CN201711266973A CN107947887A CN 107947887 A CN107947887 A CN 107947887A CN 201711266973 A CN201711266973 A CN 201711266973A CN 107947887 A CN107947887 A CN 107947887A
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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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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electric Clocks (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The present invention discloses clock system between a kind of server based on PTP protocol, it is related to server clock simultaneous techniques, give tacit consent to local clock during the server start of various regions to start, PTP module drives are loaded after into operating system, the PTP signals transmitted from satellite navigation information receiving terminal are obtained by access synchronized Ethernet switch；Various regions server parses PTP signals, obtains clock and temporal information, and clock information is supplied to system hardware, and temporal information is synchronized to operating system.Server realizes high precision clock time synchronization between multiple servers, reduces cross-server time communication delay by network PHY chip, IEEE1588 SMU chips, the network card chip Integration Design for supporting IEEE1588 synchronizations.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, specifically clock between a kind of server based on PTP protocol
Synchronization system and method.
Background technology
Some 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.
At present, for server mostly using NTP simultaneous techniques, time synchronization can be normally reached more than 100ms, and
Hardware clock can not be synchronized.However, the application time in face of current sync transaction synchronously requires higher and higher, NTP skills
Art is also increasingly difficult in adapt to this requirement.Therefore, it is badly in need of the system that exploitation designs height clock synchronization between a kind of server
Or method, realize the technological break-through in server time synchronization.
The content of the invention
Demand and shortcoming of the present invention for the development of current technology, there is provided 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
It is as follows to inscribe the technical solution used：Clock system between the server based on PTP protocol, its system architecture include：
Satellite navigation information receiving terminal, for receiving time signal, and it is defeated by the network port that time signal is changed into PTP signals
Go out；
Synchronous ethernet interchanger, supports the interchanger of synchronous ethernet agreement, supports the forwarding of PTP signals；
Various regions server, mutually produces between server and merchandises and be deployed in more ground, various regions server is General Server；Various regions
Server sets PTP modules, receives PTP signals for server, and parse clock and temporal information；
Local clock startup is given tacit consent to during the start of various regions servers, into operating system after load PTP module drives, pass through access
Synchronous ethernet interchanger obtains the PTP signals transmitted from satellite navigation information receiving terminal；Various regions server is to PTP signals
Parsed, obtain clock and temporal information, and clock information is supplied to system hardware, temporal information is synchronized to operation system
System.
Further, the satellite navigation information receiving terminal uses GPS or Big Dipper signal receiver；GPS or Big Dipper signal connect
Receive device to receive GPS or Big Dipper signal and parsed, obtain clock and temporal information, change into the PTP for meeting IEEE1588 standards
After signal, synchronous ethernet interchanger is sent to by Ethernet.
Further, clock system further includes some 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 signals transmitted for receiving network interface, network interface are connected to ground level interchanger and receive PTP letters
Number；
IEEE1588 SMU chips, are connected to network PHY, receive the 1PPS signals in PTP signals, synchronous into row clock, produce
Clock needed for server internal chip；
Network card chip, supports 1588 agreements, and network card chip is connected to network PHY, receives the temporal information that network PHY is sent, and
PTP modules temporal information being dealt under operating system, system will synchronize the time；
It is final to obtain standard compared with the information that PTP modules constantly receive the temporal information received with network card chip
The true time, control and GPS or the error of Big Dipper time are within the specific limits.
Further, network interface uses RJ45, or/and network PHY to use the 88E1548 of Marvell, or/and
IEEE1588 SMU chips use the 82P33814 of IDT, or/and network card chip to use the I350 of intel.
Clock synchronizing method between a kind of server based on PTP protocol, including：
Step 1, server loading PTP modules；
Specifically, acquiescence starts from local clock when various regions server is started shooting, and into after operating system, server system loading
PTP modules；
Step 2, server obtain PTP signals；
Specifically, various regions server access synchronous ethernet interchanger, obtains what is transmitted from satellite navigation information receiving terminal
PTP signals；
Step 3, server obtain clock and temporal information；
Specifically, various regions server parses PTP signals, clock and temporal information are obtained, and clock information is supplied to
System hardware, temporal information are synchronized to operating system.
Further, the step 2,
GPS or Big Dipper signal receiver receive GPS or Big Dipper signal and are parsed, and obtain clock and temporal information, change into symbol
Synchronous ethernet interchanger is sent to by Ethernet after the PTP signals of conjunction IEEE1588 standards；
Various regions server is obtained and connect from GPS or Big Dipper signal by respective ground level switch-access synchronous ethernet interchanger
Receive the PTP signals that device transmits.
Further, the step 3,
The ground level interchanger that the network interface of various regions server is each connected to, receives PTP signals, and sends network PHY to, net
Network PHY is by the 1PPS in PTP signals（Pulse per second (PPS)）Signal is sent to IEEE1588 SMU chips, and IEEE1588 SMU chips receive
Laggard row clock is synchronous, and produces the clock needed for 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 modules under operating system, system will synchronize the time.
Further, the step 3,
It is final to obtain standard compared with the information that PTP modules constantly receive the temporal information received with network card chip
The true time, control and GPS or the error of Big Dipper time are within the specific limits.
Clock system and method between a kind of server based on PTP protocol of the present invention, compared with prior art
Have an advantageous effect in that：Interchanger of the invention by supporting GPS/ Big Dippeves signal receiver, supporting synchronous ethernet agreement
The server of PTP technologies is mutually combined with using, and various regions server passes through network PHY chip, IEEE1588 SMU chips, supports
The network card chip Integration Design of IEEE1588 synchronizations, realizes the high precision clock time synchronization between more ground multiple servers,
Reduce cross-server time communication delay, effectively solve to need low transaction delay application demand；
Between improving server, particularly across computer room, cross-region server between timing tracking accuracy, can be convenient
It is deployed in each crucial application field, it is ensured that the delay between server reaches below 10us, can increase substantially using friendship
Easy reliability.
Brief description of the drawings
For the clearer explanation embodiment of the present invention or technology contents of the prior art, 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 the one of the present invention
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 protection scope of the present invention.
The schematic diagram of the clock system between server of the embodiment 1 based on PTP protocol of attached drawing 1；
Attached drawing 2 is the schematic block diagram that 3 various regions server internal of embodiment passes through PTP protocol synchronization time.
Embodiment
For technical scheme, the technical problem solved and technique effect is more clearly understood, below in conjunction with tool
Body embodiment, checks technical scheme, is completely described, it is clear that described embodiment is only this hair
Bright 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 on the premise of going out creative work, 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 Figure 1, its system architecture
Including：
Satellite navigation information receiving terminal, for receiving time signal, and it is defeated by the network port that time signal is changed into PTP signals
Go out；PTP signals are accurate clock synchronization protocol signals；
Synchronous ethernet interchanger, to support the interchanger of synchronous ethernet agreement, supports the forwarding of PTP signals；
Some servers, mutually produce between server and merchandise and be deployed in more ground, and various regions server is General Server, and
Server sets PTP modules, is that server reception PTP signals can simultaneously parse clock and temporal information.
Clock system between the present embodiment server, gives tacit consent to local clock and starts, into behaviour when various regions server is started shooting
PTP module drives are loaded after making system, is obtained from satellite navigation information receiving terminal and transmitted by access synchronized Ethernet switch
The PTP signals to come over；Various regions server parses PTP signals, 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, its technical solution is with implementing
Clock system can be cross-referenced between 1 server of example, realizes that flow includes：
Step 1, server loading PTP modules；
Specifically, acquiescence starts from local clock when various regions server is started shooting, and into after operating system, server system loading
PTP modules.
Step 2, server obtain PTP signals；
Specifically, various regions server access synchronous ethernet interchanger, obtains what is transmitted from satellite navigation information receiving terminal
PTP signals.
Step 3, server obtain clock and temporal information；
Specifically, various regions server parses PTP signals, clock and temporal information are obtained, and clock information is supplied to
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, is defended
Star navigation information receiving terminal specifically uses GPS or Big Dipper signal receiver, further increases the practicality of technical solution and feasible
Property.
The satellite navigation information receiving terminal uses GPS or Big Dipper signal receiver, wherein, GPS is US Global positioning
System, the Big Dipper are Chinese triones navigation systems, are abbreviated as BDS（BeiDou Navigation Satellite System）；GPS
Or Big Dipper signal receiver receives GPS or Big Dipper signal and is parsed, and clock and temporal information is obtained, after changing into PTP signals
Synchronous ethernet interchanger is sent to by Ethernet, PTP signals enter public network.
Clock system further includes some ground level interchangers between the server, and ground level interchanger is connected to synchronous ethernet
Interchanger, passes through respective ground level interchanger for various regions server（Local computer room can be deployed in）Receive PTP signals.
The present embodiment also proposes clock synchronizing method between a kind of server based on PTP protocol, its technical solution is with implementing
Clock system can be cross-referenced between 2 server of example, realizes that flow includes：
Step 1, server loading PTP modules；
Specifically, acquiescence starts from local clock when various regions server is started shooting, and into after operating system, server system loading
PTP modules.
Step 2, server obtain PTP signals；
Specifically, various regions server is obtained from GPS or the Big Dipper by respective ground level switch-access synchronous ethernet interchanger
The PTP signals that signal receiver transmits.
Further, GPS or Big Dipper signal receiver receive GPS or Big Dipper signal and are parsed, and obtain clock and time
Information, changes into after PTP signals and is sent to synchronous ethernet interchanger by Ethernet.
Step 3, server obtain clock and temporal information；
Specifically, various regions server parses PTP signals, clock and temporal information are obtained, and clock information is supplied to
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, increases
Add server to obtain a kind of concrete technical scheme of clock and temporal information, further improved overall technology content, enhance
The feasibility of the technical solution of the present embodiment.Except following technical proposals, various regions server internal passes through PTP protocol institute's synchronization time
Other schemes used, as long as the purpose of synchronization time between server can be realized, within the protection domain of the present embodiment.
Clock synchronizing method between the present embodiment server, between 2 server of embodiment on the basis of clock synchronizing method, clothes
Business device obtains clock and the detailed process of temporal information is：
GPS/ Big Dippeves signal receiver receives GPS/ Big Dipper time signals, and the time of gps signal and clock information are changed into and met
The PTP signals of IEEE1588 standards, are externally exported by Ethernet；Synchronous ethernet interchanger receives Ethernet PTP signals, branch
Protocol forward is held, time and clock information signal are transmitted to the rudimentary interchanger in various regions.
The network interface of various regions server（Generally RJ45）Connect respective ground level interchanger and receive and meet IEEE1588 marks
Accurate PTP signals, and network PHY is transferred to, network PHY can use the 88E1548 of Marvell here；Network PHY is by PTP
1PPS in signal（Pulse per second (PPS)）Signal is sent to IEEE1588 SMU chips（Management by synchronization unit）, IEEE1588 SMU chips
The 82P33814 of IDT can be used；IEEE1588 SMU chips receive laggard row clock synchronization, and produce server internal chip
Required clock, such as 100MHz signals 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 intel
I350, network card chip can be dealt into PTP modules under operating system after receiving temporal information, and system will synchronize the time.
Further, compared with the information that PTP modules constantly receive the temporal information received with network card chip,
It is final to obtain correct time, control with GPS or the error of Big Dipper time within the specific limits, 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 added, its technical solution can take with embodiment 3
Clock synchronizing method is cross-referenced between business device.
Clock system between the server, as shown in Figure 2, is respectively provided with the server of various regions：
Network PHY, the PTP signals transmitted for receiving network interface, network interface, which is connected to ground level server and receives, to be met
The PTP signals of IEEE1588 standards；
Specifically, network interface generally uses RJ45 interfaces, network PHY can use the 88E1548 of Marvell.
IEEE1588 SMU chips, are connected to network PHY, receive the 1PPS signals in PTP signals, synchronous into row clock,
Produce the clock needed for server internal chip, such as 100MHz signals of CPU, PCIE device etc..
Specifically, IEEE1588 SMU chips 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
Cease, and temporal information is dealt into the PTP modules under operating system, system will synchronize the time.
Specifically, network card chip can use the I350 of intel；PTP modules 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 Big Dipper time one
Determine in scope, 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 modules）Common cooperation, is connect by Hardware by network
Mouth receives the PTP signals of IEEE1588 standards, calls trawl performance that temporal information is sent to operation system by Kernel Space
System, is compared the information that the temporal information received is constantly received with network interface card by the PTP modules under User Space
It is right, finally obtain correct time, it is ensured that with GPS or the control of Big Dipper time error within the specific limits, 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 the core technology content of the present invention, the protection domain being not intended to limit the invention, technical side of the invention
Case is not restricted in above-mentioned embodiment.Based on the above-mentioned specific embodiment of the present invention, those skilled in the art
Without departing from the principle of the present invention, to any improvement and modification made by the present invention, the special of the present invention should all be fallen into
Sharp protection domain.
Claims (10)
1. clock system between a kind of server based on PTP protocol, it is characterised in that its system architecture includes：
Satellite navigation information receiving terminal, for receiving time signal, and it is defeated by the network port that time signal is changed into PTP signals
Go out；
Synchronous ethernet interchanger, supports the interchanger of synchronous ethernet agreement, supports the forwarding of PTP signals；
Various regions server, mutually produces between server and merchandises and be deployed in more ground, various regions server is General Server；Various regions
Server sets PTP modules, receives PTP signals for server, and parse clock and temporal information；
Local clock startup is given tacit consent to during various regions server start, into operating system after load PTP module drives, pass through
Access the synchronous ethernet interchanger and obtain the PTP signals transmitted from satellite navigation information receiving terminal；The various regions clothes
Business device parses PTP signals, 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, it is characterised in that described
Satellite navigation information receiving terminal uses GPS or Big Dipper signal receiver；
GPS or the Big Dipper signal receiver receives GPS or Big Dipper signal and is parsed, and obtains clock and temporal information, turns
Synchronous ethernet interchanger is sent to after into the PTP signals for meeting IEEE1588 standards.
3. clock system between a kind of server based on PTP protocol according to claim 2, it is characterised in that also wrap
Some ground level interchangers are included, various regions server is connected to synchronous Ethernet switch by respective ground level interchanger.
4. clock system between a kind of server based on PTP protocol according to claim 3, it is characterised in that described
Various regions server is respectively provided with：
Network PHY, the PTP signals transmitted for receiving network interface, network interface are connected to ground level interchanger and receive PTP letters
Number；
IEEE1588 SMU chips, are connected to network PHY, receive the 1PPS signals in PTP signals, synchronous into row clock, produce
Clock needed for server internal chip；
Network card chip, supports 1588 agreements, and network card chip is connected to network PHY, receives the temporal information that network PHY is sent, and
PTP modules temporal information being dealt under operating system, system will synchronize the time；
It is final to obtain standard compared with the information that PTP modules constantly receive the temporal information received with network card chip
The true time, control and GPS or the error of Big Dipper time are within the specific limits.
5. clock system between a kind of server based on PTP protocol according to claim 4, it is characterised in that described
Network interface uses RJ45, or/and the network PHY to use the 88E1548 of Marvell, or/and the IEEE1588 SMU cores
Piece uses the 82P33814 of IDT, or/and the network card chip to use the I350 of intel.
A kind of 6. clock synchronizing method between server based on PTP protocol, it is characterised in that including：
Step 1, server loading PTP modules；
Acquiescence starts from local clock during the server start of various regions, into after operating system, server system loading PTP modules；
Step 2, server obtain PTP signals；
Various regions server access synchronous ethernet interchanger, obtains the PTP signals transmitted from satellite navigation information receiving terminal；
Step 3, server obtain clock and temporal information；
Various regions server parses PTP signals, obtains clock and temporal information, and be supplied to system hard clock information
Part, temporal information are synchronized to operating system.
7. clock synchronizing method between a kind of server based on PTP protocol according to claim 6, it is characterised in that described
Step 2,
GPS or Big Dipper signal receiver receive GPS or Big Dipper signal and are parsed, and obtain clock and temporal information, change into symbol
Synchronous ethernet interchanger is sent to by Ethernet after the PTP signals of conjunction IEEE1588 standards；
The various regions server is obtained from the GPS or north by respective ground level switch-access synchronous ethernet interchanger
The PTP signals that bucket signal receiver transmits.
8. clock synchronizing method between a kind of server based on PTP protocol according to claim 7, it is characterised in that described
Step 3,
The ground level interchanger that the network interface of the various regions server is each connected to, receives PTP signals, and sends network to
PHY, the 1PPS signals in PTP signals are sent to IEEE1588 SMU chips by network PHY, after IEEE1588 SMU chips receive
It is synchronous into row clock, and produce the clock needed for 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 modules under operating system, system will synchronize the time.
9. clock synchronizing method between a kind of server based on PTP protocol according to claim 8, it is characterised in that described
Step 3,
Compared with the information that the PTP modules constantly receive the temporal information received with network card chip, finally obtain
Correct time is taken, control and GPS or the error of Big Dipper time are within the specific limits.
10. clock synchronizing method between a kind of server based on PTP protocol according to claim 9, it is characterised in that described
Network interface uses RJ45, or/and the network PHY to use the 88E1548 of Marvell, or/and IEEE1588 SMU chips to adopt
The I350 of intel is used with the 82P33814 of IDT, or/and network card chip.
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| CN111163011A (en) * | 2020-01-19 | 2020-05-15 | 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 |
| CN112020133A (en) * | 2020-07-29 | 2020-12-01 | 苏州浪潮智能科技有限公司 | Edge calculation server design method for multi-strategy high-precision clock synchronization |
| CN114157380A (en) * | 2021-12-02 | 2022-03-08 | 浪潮云信息技术股份公司 | ZNBASE distributed database clock synchronization method and system |
| 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 |
| CN115987477A (en) * | 2022-12-19 | 2023-04-18 | 泰斗微电子科技有限公司 | Multi-reference source time synchronization method, system, module and medium |
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| 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 |
| CN114157380A (en) * | 2021-12-02 | 2022-03-08 | 浪潮云信息技术股份公司 | ZNBASE distributed database clock synchronization method and system |
| 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 |
| CN115987477A (en) * | 2022-12-19 | 2023-04-18 | 泰斗微电子科技有限公司 | Multi-reference source time synchronization method, system, module and medium |
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|---|---|
| CN107947887B (en) | 2019-06-25 |
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