Use interest-based intersection for NumPendingMulti
#6112
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This optimises #6089 by ensuring that we don't over-walk either the sublist or the subject tree, instead only matching the subject tree on subjects for which the sublist expresses interest. Signed-off-by: Neil Twigg <neil@nats.io>
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Includes the following: * Some tweaks to the NRG test helpers * #6055 * #6061 * #6065 * #6041 (but with `math/rand` instead of `math/rand/v2` due to an older Go version in CI for 2.10.x) * #6066 * #6067 * #6069 * #6075 * #6082 * #6087 * #6086 * #6088 * #6089 * #6092 * #6096 * #6098 * #6097 * #6105 * #6104 * #6106 * #6109 * #6111 * #6112 Signed-off-by: Neil Twigg <neil@nats.io>
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This optimises #6089 by ensuring that we don't over-walk either the sublist or the subject tree, instead only matching the subject tree on subjects for which the sublist expresses interest.
On my machine, in the
JetStreamConsumeWithFiltersbenchmark with-benchtime 1000x, this reduces the CPU time taken byNumPendingMultiby 19.41 seconds, reducing it to only 0.06 seconds.Signed-off-by: Neil Twigg neil@nats.io