~/talk

FLB: Fine-grained Load Balancing for Lossless Datacenter Networks

on YouTube 16m
Talkat USENIX ATC '25 · 2025-07-07..07-09· [networking]

speakers

name:Jinbin Hu
links:none on file
name:Wenxue Li
links:none on file
name:Xiangzhou Liu
links:none on file
name:Junfeng Wang
links:none on file
name:Bowen Liu
links:none on file
name:Ping Yin
links:none on file
name:Jianxin Wang
links:none on file
name:Jiawei Huang
links:none on file
name:Kai Chen
links:none on file

resources

video:https://youtu.be/dn7fvkWtYXU
slides:none on file

summary

FLB claims to balance RoCE traffic by combining threshold-free rerouting for uncongested flows with congested-flow isolation when queues near PFC thresholds, implemented on a P4/DPDK programmable-switch testbed. It measures one-way path delay via packet timestamps to avoid reordering and marks isolated flows before PFC fires (isolation threshold < PFC threshold). Prototype shows up to 96% reduction in PFC PAUSEs, up to 45% goodput gain over CONGA+DCQCN, and 18–40+% average FCT reductions vs several baselines.

AI-written summary · about

chapters (9)

  1. 0:00FLB introduction
  2. 2:52Existing load balancing limits
  3. 7:13FLB design goals
  4. 8:18Routing in FLB
  5. 11:28Measuring one-way delay
  6. 13:20Isolating congestive flows
  7. 14:02Implementation setup
  8. 15:08Performance results
  9. 15:51Q&A

related talks

~/search
type to search 6,249 conferences, 138,987 speakers and 185,172 talks
~/help
cmdctrl k
search every conference, speaker and series
/
focus the filter search
h
home
c
conferences
s
speakers
e
series
t
light / dark — the status bar button does the same
?
this help
esc
close this, then clear every filter — or just the search, while you are typing in it

Ignored while you are typing. Pages without a filter rail have no search to focus.