When looking through limits.conf for this I came across this;
[thruput]
maxKBps =
* If specified and not zero, this limits the speed through the thruput processor to the specified
rate in kilobytes per second.
* To control the CPU load while indexing, use this to throttle the number of events this indexer
processes to the rate (in KBps) you specify.
Now, I've used maxKBps for forwarder throttling in the past but I hadn't considered its use on an indexer, this seems to suggest it may be capable of performing the throttling behaviour you are looking for?
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