tysonnorris commented on a change in pull request #3232: Making prewarm kind
(and count) configurable
URL:
https://github.com/apache/incubator-openwhisk/pull/3232#discussion_r187685673
##########
File path:
core/invoker/src/main/scala/whisk/core/containerpool/ContainerPool.scala
##########
@@ -204,26 +204,25 @@ class ContainerPool(childFactory: ActorRefFactory =>
ActorRef,
* @param kind the kind you want to invoke
* @return the container iff found
*/
- def takePrewarmContainer(action: ExecutableWhiskAction): Option[(ActorRef,
ContainerData)] =
- prewarmConfig.flatMap { config =>
- val kind = action.exec.kind
- val memory = action.limits.memory.megabytes.MB
- prewarmedPool
- .find {
- case (_, PreWarmedData(_, `kind`, `memory`)) => true
- case _ => false
- }
- .map {
- case (ref, data) =>
- // Move the container to the usual pool
- freePool = freePool + (ref -> data)
- prewarmedPool = prewarmedPool - ref
- // Create a new prewarm container
- prewarmContainer(config.exec, config.memoryLimit)
+ def takePrewarmContainer(action: ExecutableWhiskAction): Option[(ActorRef,
ContainerData)] = {
+ val kind = action.exec.kind
+ val memory = action.limits.memory.megabytes.MB
+ prewarmedPool
+ .find {
+ case (_, PreWarmedData(_, `kind`, `memory`)) => true
Review comment:
This will use the prewarm IFF the prewarm container is an exact match for
memory req. Is that intended?
I wonder if it should be `if prewarm-memory > action memory > prewarm-memory
- memory-match-threshold`
So that
* there DOES NOT need to be an exact match of action memory req + prewarm
memory
* there DOES need to be a "close match", dictated by a configurable
memory-match-threshold (so that a 20MB action does not land in a 4GB prewarm)
I'm not sure that configuration should be global vs per-prewarm config
(which would require additional change in the manifest)
WDYT?
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