FQ-PIE Queue Discipline in the Linux Kernel: Design, Implementation and Challenges

Ramakrishnan, Gautam; Bhasi, Mohit; Saicharan, V.; Monis, Leslie; Patil, Sachin D.; Tahiliani, Mohit P.

doi:10.1109/lcnsymposium47956.2019.9000684

Cited by 4 publications

(1 citation statement)

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“…Given that AQM can mitigate the bufferbloat problem, We are also interested to include some other AQM schemes such as PIE and variant of CoDel and PIE, that is, FQ‐CoDel [67] and FQ‐PIE [66] to conduct a more detailed analysis. The PIE scheme is a counterpart of CoDel, which is a light weight scheme and can control the queuing delay very effectively.…”

Section: Discussion and Future Workmentioning

confidence: 99%

Study on performance of AQM schemes over TCP variants in different network environments

2020

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Increasing the size of memory in network devices leads to the problem of a persistently full buffer (a.k.a, bufferbloat). The objective of this study is to compare the recently introduced Controlled Delay (CoDel) scheme with the traditional method of active queue management, such as Random Early Detection (RED) algorithms over TCP variants. To explore the potential of CoDel over RED, TCP variants have been assessed at three settings: variable congestion and fixed payload (VCFP), variable payload and fixed congestion (VPFC), and high congestion and high payload (HCHP). We assessed the CoDel and RED schemes for active queue management (AQM) using three performance metrics: link utilization, drop rate, and queuing delay. The analytical results show that CoDel outperformed RED in most aspects over variants of TCP because of its auto‐tuning and auto‐adjustment features. However, RED outperformed CoDel in a few cases. In the VCFP setting, RED recorded a lower drop rate overall TCP variants. Moreover, in the VPFC setting, RED with a payload of 500–1000 bytes performed better in terms of drop rate. Finally, in the HPHC setting, there were two cases where RED, over TCP NewReno and Vegas, performed well in terms of drop rate.

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Section: Discussion and Future Workmentioning

confidence: 99%