[dpdk-dev] [PATCH v6 1/1] eventdev: add new software event timer adapter

Honnappa Nagarahalli Honnappa.Nagarahalli at arm.com
Fri Apr 26 20:51:05 CEST 2019


Hi Erik,
	A quick question.

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Erik Gabriel Carrillo
> Sent: Friday, April 26, 2019 10:14 AM
> To: jerin.jacob at caviumnetworks.com
> Cc: mattias.ronnblom at ericsson.com; pbhagavatula at caviumnetworks.com;
> dev at dpdk.org
> Subject: [dpdk-dev] [PATCH v6 1/1] eventdev: add new software event timer
> adapter
> 
> This patch introduces a new version of the event timer adapter software PMD.
> In the original design, timer event producer lcores in the primary and
> secondary processes enqueued event timers into a ring, and a service core in
> the primary process dequeued them and processed them further.  To improve
> performance, this version does away with the ring and lets lcores in both
> primary and secondary processes insert timers directly into timer skiplist data
> structures; the service core directly accesses the lists as well, when looking for
> timers that have expired.
How do you ensure concurrent access to the timer skiplist? Are you using any locks or is it a lock-free data structure?

<snip>



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