BShare: Packet Queueing Delay-Driven Buffer Sharing for Datacenter Switches
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866913157858983936 |
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| author | Agarwal, Krishna Maulana, Muhamad Rizka Addanki, Vamsi Mostafaei, Habib |
| author_facet | Agarwal, Krishna Maulana, Muhamad Rizka Addanki, Vamsi Mostafaei, Habib |
| contents | Modern datacenter switches share packet buffers across ports to boost overall throughput and reduce packet loss. However, as buffer availability per-port-per-bandwidth unit continues to decrease, existing buffer-sharing strategies face increasing performance challenges. Recent efforts have attempted to integrate Buffer Management (BM) with Active Queue Management (AQM) to harness the advantages of both BM and AQM approaches to improve performance. While these hybrid solutions show promise, their complexity of dynamically calculating multiple factors for integration hinders generalization and efficiency. This paper presents BShare, a simple buffer sharing mechanism that uses packet queueing delay. BShare requires only a single operator-configurable parameter. Our simulation results show that BSHARE improves the flow completion time (FCT) performance of advanced transport protocols, such as PowerTCP, by up to 45.07% compared to ABM, particularly under burst-heavy datacenter workloads. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2605_24178 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | BShare: Packet Queueing Delay-Driven Buffer Sharing for Datacenter Switches Agarwal, Krishna Maulana, Muhamad Rizka Addanki, Vamsi Mostafaei, Habib Networking and Internet Architecture Modern datacenter switches share packet buffers across ports to boost overall throughput and reduce packet loss. However, as buffer availability per-port-per-bandwidth unit continues to decrease, existing buffer-sharing strategies face increasing performance challenges. Recent efforts have attempted to integrate Buffer Management (BM) with Active Queue Management (AQM) to harness the advantages of both BM and AQM approaches to improve performance. While these hybrid solutions show promise, their complexity of dynamically calculating multiple factors for integration hinders generalization and efficiency. This paper presents BShare, a simple buffer sharing mechanism that uses packet queueing delay. BShare requires only a single operator-configurable parameter. Our simulation results show that BSHARE improves the flow completion time (FCT) performance of advanced transport protocols, such as PowerTCP, by up to 45.07% compared to ABM, particularly under burst-heavy datacenter workloads. |
| title | BShare: Packet Queueing Delay-Driven Buffer Sharing for Datacenter Switches |
| topic | Networking and Internet Architecture |
| url | https://arxiv.org/abs/2605.24178 |