> or approximate the size in bytes of Nodes / Rows ? This one.
I think it should not be that hard to estimate SampleResult size in bytes for common implementations. Same for node in result tree/result table. So we can implement user-facing property like "stop adding more results if existing occupy 50MiB". We can keep "SampleResult.estimateSize()" API as JMeter-core-BETA-API (e.g. not to be used by extensions) so we can remove that if the approach turns out to be not that good. Vladimir