Presentation 2022-10-06
[Encouragement Talk] Proposal of C-state Control Method in Frame Forwarding System for vRAN Traffic
Ko Natori, Kei Fujimoto, Akinori Shiraga,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Today, there are services on general-purpose servers with demanding latency requirements. For example, signal processing on general-purpose servers in virtualized Radio Access Network(vRAN) must meet latency requirements, which is conventionally met by dedicated hardware. In servers where such low latency is required, performance tuning is conductedat the expense of power savings, like limiting the C-state, which is a hardware power saving function of the CPU. Therefore, achieving low latency in energy-efficient way is an open problem. In this paper, we propose a C-state control method for a CPU core that performs latency-sensitive applications, which achieves energy efficiency. Our experiments show that our proposed method can achieve power saving while maintaining low latency, in a use case of frame forwarding in vRAN.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Low Latency / Energy Efficiency / C-state / vRAN
Paper # NS2022-92
Date of Issue 2022-09-28 (NS)

Conference Information
Committee NS
Conference Date 2022/10/5(3days)
Place (in Japanese) (See Japanese page)
Place (in English) Hokkaidou University + Online
Topics (in Japanese) (See Japanese page)
Topics (in English) Network architecture (5G, Local 5G, Beyond5G, Mobile networks, Ad-hoc and sensor networks, Overlay and P2P networks, Programmable networks, SDN/NFV, IoT, Network slicing), Next generation packet transport (High speed Ethernet, IP over WDM, Multi-service package technology, MPLS), Grid, etc.
Chair Tetsuya Oishi(NTT)
Vice Chair Takumi Miyoshi(Shibaura Insti of Tech.)
Secretary Takumi Miyoshi(NTT)
Assistant Kotaro Mihara(NTT)

Paper Information
Registration To Technical Committee on Network Systems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) [Encouragement Talk] Proposal of C-state Control Method in Frame Forwarding System for vRAN Traffic
Sub Title (in English)
Keyword(1) Low Latency
Keyword(2) Energy Efficiency
Keyword(3) C-state
Keyword(4) vRAN
1st Author's Name Ko Natori
1st Author's Affiliation Nippon Telegraph and Telephone Corporation(NTT)
2nd Author's Name Kei Fujimoto
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation(NTT)
3rd Author's Name Akinori Shiraga
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation(NTT)
Date 2022-10-06
Paper # NS2022-92
Volume (vol) vol.122
Number (no) NS-198
Page pp.pp.70-75(NS),
#Pages 6
Date of Issue 2022-09-28 (NS)