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HFTã®äž»ãªç¹åŸŽã¯ä»¥äžã®éãã§ãïŒ
- ã¹ããŒãïŒãã€ã¯ãç§ãããç§åäœã§æž¬å®ããããæ¥µããŠé«éãªæ³šæå·è¡ã
- é«ãå転çïŒæäŸ¡èšŒåžã®é »ç¹ãªå£²è²·ã
- ã¢ã«ãŽãªãºã ïŒè€éãªæ°çã¢ãã«ãšã³ã³ãã¥ãŒã¿ã¢ã«ãŽãªãºã ãžã®äŸåã
- ã³ãã±ãŒã·ã§ã³ïŒãããã¯ãŒã¯ã¬ã€ãã³ã·ãŒãæå°åããããã®ååŒæãµãŒããŒãžã®è¿æ¥æ§ã
- ããŒã±ããã¡ã€ã¯ïŒè²·å€ãšå£²å€ãåæã«æç€ºããããšã«ããæµåæ§ã®æäŸã
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HFTã«ãããŠã¬ã€ãã³ã·ãŒæé©åãäžå¯æ¬ ãªçç±ã¯ä»¥äžã®éãã§ãïŒ
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- åçæ§ã®åäžïŒããéãå·è¡ã¯ãããè¯ãäŸ¡æ ŒãšååŒããšã®åçæ§åäžã«ã€ãªãããŸãã
- è£å®ååŒã®æ©äŒïŒäœã¬ã€ãã³ã·ãŒã¯ãç°ãªãååŒæãè³ç£ã¯ã©ã¹éã§ã®è£å®æ©äŒã掻çšããããã«äžå¯æ¬ ã§ãã
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1. ã³ãã±ãŒã·ã§ã³
ã³ãã±ãŒã·ã§ã³ãšã¯ãååŒãµãŒããŒãååŒæã®ããŒã¿ã»ã³ã¿ãŒå ããŸãã¯ãã®ããè¿ãã«èšçœ®ããããšã§ããããã«ããããããã¯ãŒã¯è·é¢ãæå°åããããããã¯ãŒã¯ã¬ã€ãã³ã·ãŒãå€§å¹ ã«åæžãããŸããã³ãã±ãŒã·ã§ã³ãå©çšããããšã§ããã¬ãŒããŒã¯æ³šæå·è¡ã«ãããŠå¯èœãªéãäœãã¬ã€ãã³ã·ãŒãå®çŸã§ããŸãã
äŸïŒããååŒäŒç€Ÿãããã¥ãŒãžã£ãŒãžãŒå·ã»ã³ãŒã«ã¹ã«ããEquinix NY4ããŒã¿ã»ã³ã¿ãŒã«ãµãŒããŒãã³ãã±ãŒã·ã§ã³ããNasdaqãšNYSEååŒæãžã®äœã¬ã€ãã³ã·ãŒã¢ã¯ã»ã¹ãå®çŸããŸãã ãã®é 眮ã«ãããé éå°ã«ãµãŒããŒã眮ãå Žåã«æ¯ã¹ãŠã©ãŠã³ãããªããã¿ã€ã ãå€§å¹ ã«ççž®ãããŸãã
2. 髿§èœãããã¯ãŒã¯ã€ã³ãã©
å ç¢ã§æé©åããããããã¯ãŒã¯ã€ã³ãã©ã¯ããããã¯ãŒã¯ã¬ã€ãã³ã·ãŒãæå°åããããã«äžå¯æ¬ ã§ããããã«ã¯ãé«éå ãã¡ã€ããŒã±ãŒãã«ãäœã¬ã€ãã³ã·ãŒã¹ã€ãããå¹ççãªãããã¯ãŒã¯ãããã³ã«ã®äœ¿çšãªã©ãå«ãŸããŸãã
髿§èœãããã¯ãŒã¯ã®äž»èŠã³ã³ããŒãã³ãïŒ
- å ãã¡ã€ããŒã±ãŒãã«ïŒæéã®ããŒã¿äŒéé床ãæäŸããŸãã
- äœã¬ã€ãã³ã·ãŒã¹ã€ããïŒããŒã¿ã«ãŒãã£ã³ã°ã®é å»¶ãæå°åããŸãã
- RDMAïŒãªã¢ãŒããã€ã¬ã¯ãã¡ã¢ãªã¢ã¯ã»ã¹ïŒïŒãµãŒããŒéã®çŽæ¥ã¡ã¢ãªã¢ã¯ã»ã¹ãå¯èœã«ãããªãã¬ãŒãã£ã³ã°ã·ã¹ãã ããã€ãã¹ããŠã¬ã€ãã³ã·ãŒãåæžããŸãã
- TCPã®æé©åïŒããŒã¿äŒéã®é å»¶ãæžããããã«TCPãã©ã¡ãŒã¿ã埮調æŽããŸãã
3. æé©åãããååŒã¢ã«ãŽãªãºã
å¹ççãªã¢ã«ãŽãªãºã ã¯ãåŠçã¬ã€ãã³ã·ãŒãæå°åããããã«äžå¯æ¬ ã§ããã¢ã«ãŽãªãºã ã¯ãèšç®ã®è€éããæå°éã«æããããŒã¿åŠçãæé©åããããã«èšèšãããã¹ãã§ãã
ã¢ã«ãŽãªãºã æé©åã®æŠç¥ïŒ
- ã³ãŒããããã¡ã€ãªã³ã°ïŒã³ãŒãå ã®ããã©ãŒãã³ã¹ã®ããã«ããã¯ãç¹å®ããæé©åããŸãã
- ã¢ã«ãŽãªãºã ã®éžæïŒç¹å®ã®ååŒæŠç¥ã«æãå¹ççãªã¢ã«ãŽãªãºã ãéžæããŸãã
- ããŒã¿æ§é ïŒããŒã¿ã¹ãã¬ãŒãžãšæ€çŽ¢ãæé©åããããã«é©åãªããŒã¿æ§é ã䜿çšããŸãã
- 䞊ååŠçïŒãã«ãã³ã¢ããã»ããµãå©çšããŠèšç®ã䞊ååããåŠçæéãççž®ããŸãã
4. 髿§èœããŒããŠã§ã¢
é«éããã»ããµã倧容éã¡ã¢ãªãäœã¬ã€ãã³ã·ãŒã¹ãã¬ãŒãžãåãã匷åãªãµãŒããŒã䜿çšããããšã¯ãåŠçã¬ã€ãã³ã·ãŒãæå°åããããã«éèŠã§ãããœãªããã¹ããŒããã©ã€ãïŒSSDïŒã¯ãããŒã¿ã¢ã¯ã»ã¹ãé«éåãããããåŸæ¥ã®ããŒããã©ã€ãããã奜ãŸããŸãã
äž»èŠãªããŒããŠã§ã¢ã®èæ ®äºé ïŒ
- CPUïŒé«ã¯ããã¯ã¹ããŒããšè€æ°ã®ã³ã¢ãæã€ããã»ããµãéžæããŸãã
- RAMïŒå€§èŠæš¡ãªããŒã¿ã»ãããä¿åããã³åŠçããããã«ååãªã¡ã¢ãªã䜿çšããŸãã
- SSDïŒããŒã¿ã¢ã¯ã»ã¹ãé«éåããã¬ã€ãã³ã·ãŒãåæžããããã«ãœãªããã¹ããŒããã©ã€ããå©çšããŸãã
- ãããã¯ãŒã¯ã€ã³ã¿ãŒãã§ãŒã¹ã«ãŒãïŒNICïŒïŒé«éãªãããã¯ãŒã¯éä¿¡ã®ããã«äœã¬ã€ãã³ã·ãŒNICãéžæããŸãã
5. ãªãã¬ãŒãã£ã³ã°ã·ã¹ãã ã®æé©å
ãªãã¬ãŒãã£ã³ã°ã·ã¹ãã ãæé©åããããšã§ããªãŒããŒããããåæžããããã©ãŒãã³ã¹ãåäžãããããšãã§ããŸããããã«ã¯ãã«ãŒãã«ãã©ã¡ãŒã¿ã®èª¿æŽãäžèŠãªãµãŒãã¹ã®ç¡å¹åããªã¢ã«ã¿ã€ã ãªãã¬ãŒãã£ã³ã°ã·ã¹ãã ïŒRTOSïŒã®äœ¿çšãå«ãŸããŸãã
ãªãã¬ãŒãã£ã³ã°ã·ã¹ãã æé©åã®ææ³ïŒ
- ã«ãŒãã«ãã¥ãŒãã³ã°ïŒãããã¯ãŒã¯ããã©ãŒãã³ã¹ãæé©åããã¬ã€ãã³ã·ãŒãåæžããããã«ã«ãŒãã«ãã©ã¡ãŒã¿ã調æŽããŸãã
- äžèŠãªãµãŒãã¹ã®ç¡å¹åïŒãªãœãŒã¹æ¶è²»ãåæžããããã«äžèŠãªãµãŒãã¹ãç¡å¹åããŸãã
- ãªã¢ã«ã¿ã€ã ãªãã¬ãŒãã£ã³ã°ã·ã¹ãã ïŒRTOSïŒïŒç¢ºå®çã§äœã¬ã€ãã³ã·ãŒã®ããã©ãŒãã³ã¹ã®ããã«RTOSã䜿çšããŸãã
- å²ã蟌ã¿åŠçã®æé©åïŒã·ã¹ãã ãããŒããŠã§ã¢å²ã蟌ã¿ãåŠçããæ¹æ³ãæé©åããŸãã
6. ãã€ã¬ã¯ãããŒã±ããã¢ã¯ã»ã¹ïŒDMAïŒ
DMAã¯ããã¬ãŒããŒã«ååŒæã®æ³šææ¿ãžã®çŽæ¥ã¢ã¯ã»ã¹ãæäŸãã仲仿¥è ããã€ãã¹ããŠã¬ã€ãã³ã·ãŒãåæžããŸããããã«ããããã¬ãŒããŒã¯ããéããããå¹ççã«æ³šæãå·è¡ã§ããŸãã
DMAã®å©ç¹ïŒ
- ã¬ã€ãã³ã·ãŒã®åæžïŒååŒæãžã®çŽæ¥ã¢ã¯ã»ã¹ã«ããã仲仿¥è ã®é å»¶ãæé€ãããŸãã
- ã³ã³ãããŒã«ã®åäžïŒãã¬ãŒããŒã¯æ³šæã®çºæ³šãšå·è¡ããã现ããå¶åŸ¡ã§ããŸãã
- éææ§ã®åäžïŒãã¬ãŒããŒã¯æ³šææ¿ãšåžå Žã®åã¿ããªã¢ã«ã¿ã€ã ã§ç¢ºèªã§ããŸãã
7. äœã¬ã€ãã³ã·ãŒã¡ãã»ãŒãžã³ã°ãããã³ã«
å¹ççãªã¡ãã»ãŒãžã³ã°ãããã³ã«ã䜿çšããããšã¯ãããŒã¿äŒéã«ãããã¬ã€ãã³ã·ãŒãæå°åããããã«äžå¯æ¬ ã§ããUDPïŒUser Datagram ProtocolïŒã®ãããªãããã³ã«ã¯ããªãŒããŒããããäœããé床ãéããããTCPïŒTransmission Control ProtocolïŒããã奜ãŸããããšããããããŸãããä¿¡é Œæ§ã®é¢ã§ãã¬ãŒããªãããããæ éã«ç®¡çããå¿ èŠããããŸãã
ã¡ãã»ãŒãžã³ã°ãããã³ã«ã®æ¯èŒïŒ
- TCPïŒä¿¡é Œæ§ã¯é«ããããšã©ãŒãã§ãã¯ãšåéã¡ã«ããºã ã®ããã«äœéã
- UDPïŒé«éã ãããã±ããã®é ä¿¡ãé åºãä¿èšŒããªãããä¿¡é Œæ§ã¯äœãã
- ãã«ããã£ã¹ãïŒè€æ°ã®åä¿¡è ã«åæã«åžå ŽããŒã¿ãé ä¿¡ããã®ã«å¹ççã
8. FPGAã¢ã¯ã»ã©ã¬ãŒã·ã§ã³
ãã£ãŒã«ãããã°ã©ããã«ã²ãŒãã¢ã¬ã€ïŒFPGAïŒã¯ãç¹å®ã®ã¿ã¹ã¯ãéåžžã«é«éã«å®è¡ããããã«ããã°ã©ã ã§ããããŒããŠã§ã¢ããã€ã¹ã§ããæ³šæåŠçããªã¹ã¯ç®¡çãªã©ã®éèŠãªèšç®ãé«éåããããã«FPGAã䜿çšãããšãã¬ã€ãã³ã·ãŒãå€§å¹ ã«åæžã§ããŸãã
FPGAã¢ã¯ã»ã©ã¬ãŒã·ã§ã³ã®å©ç¹ïŒ
- 髿§èœïŒFPGAã¯CPUãããã¯ããã«é«éã«èšç®ãå®è¡ã§ããŸãã
- äœã¬ã€ãã³ã·ãŒïŒããŒããŠã§ã¢ã¬ãã«ã®åŠçã«ããé å»¶ãæå°éã«æããããŸãã
- ã«ã¹ã¿ãã€ãºæ§ïŒFPGAã¯ç¹å®ã®ååŒèŠä»¶ã«åãããŠã«ã¹ã¿ãã€ãºã§ããŸãã
9. Precision Time Protocol (PTP)
PTPã¯ããããã¯ãŒã¯äžã®ã¯ããã¯ãé«ç²ŸåºŠã§åæããããã«äœ¿çšããããããã¯ãŒã¯ãããã³ã«ã§ããæ£ç¢ºãªæå»åæã¯ãåžå ŽããŒã¿ãåæããã€ãã³ãã®æ£ããé åºãä¿èšŒããããã«äžå¯æ¬ ã§ãã
PTPã®å©ç¹ïŒ
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- ããŒã¿åæã®åäžïŒæ£ç¢ºãªã¿ã€ã ã¹ã¿ã³ãã«ãããåžå ŽããŒã¿ã®ç²Ÿå¯ãªåæãå¯èœã«ãªããŸãã
- èŠå¶ã³ã³ãã©ã€ã¢ã³ã¹ïŒã¿ã€ã ã¹ã¿ã³ãã®ç²ŸåºŠã«é¢ããèŠå¶èŠä»¶ãæºãããŸãã
10. ç¶ç¶çãªç£èŠãšæé©å
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ç£èŠãã¹ãäž»èŠãªææšïŒ
- ã©ãŠã³ãããªããã¿ã€ã ïŒRTTïŒïŒä¿¡å·ãååŒãµãŒããŒããååŒæã«ç§»åããŠæ»ã£ãŠãããŸã§ã«ãããæéã
- 泚æå·è¡æéïŒæ³šæãååŒæã«ãã£ãŠå·è¡ããããŸã§ã«ãããæéã
- ãããã¯ãŒã¯ã¬ã€ãã³ã·ãŒïŒãããã¯ãŒã¯ãä»ããããŒã¿äŒéã®é å»¶ã
- åŠçã¬ã€ãã³ã·ãŒïŒååŒãµãŒããŒãããŒã¿ãåŠçããæ³šæãçæãããŸã§ã«ãããæéã
ã¬ã€ãã³ã·ãŒæé©åã«ããããã¯ãããžãŒã®åœ¹å²
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