Perešíni, Peter and Kuźniar, Maciej and Canini, Marco and Kostic, Dejan
ESPRES: Transparent SDN Update Scheduling.
In: The 3rd ACM SIGCOMM Workshop on Hot Topics in Software Defined Networking (HotSDN 2014), ACM SIGCOMM 2014, 22 August 2014, Chicago, Illinois, USA.
Network forwarding state undergoes frequent changes, in
batches of forwarding rule modi�cations at multiple switches. Installing or modifying a large number of rules is time consuming given the performance limits of current programmable switches, which are also due to economical factors in addition to technological ones.
In this paper, we observe that a large network-state update
typically consists of a set of sub-updates that are independent of one another w.r.t. the traffic they affect, and hence sub-updates can be installed in parallel, in any order.
Leveraging this observation, we treat update installation as
a scheduling problem and design ESPRES, a runtime mechanism
that rate-limits and reorders updates to fully utilize
processing capacities of switches without overloading them.
Our early results show that compared to using no scheduler,
our schemes yield 2.17-3.88 times quicker sub-update completion time for 20th percentile of sub-updates and 1.27-1.57 times quicker for 50th percentile.
Conference or Workshop Papers
||Software-Defined Networking; Performance; Update scheduling
Rebeca De Miguel
||07 Aug 2014 10:21
||15 Dec 2016 15:03
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