siimon
v8 heap_size_limit
Would it be possible to add heap_size_limit gauge to the default nodejs metrics that get collected?
It would be useful for displaying an upper limit for heap usage of node processes
take a look to N|solid it is a nodejs alternative 100% compatible which provides telemetry out of the box, no instrumentation needed. Even the metrics you're looking for and much more.
I wrote a blog post some time ago about how to integrate it with prometheus+grafana, but currently you can connect anything that supports OTLP
{ total_heap_size: 6897664, total_heap_size_executable: 524288, total_physical_size: 6356992, total_available_size: 4340358888, used_heap_size: 5763352, heap_size_limit: 4345298944, malloced_memory: 278632, peak_malloced_memory: 1114624, does_zap_garbage: 0, number_of_native_contexts: 1, number_of_detached_contexts: 0, total_global_handles_size: 8192, used_global_handles_size: 5344, external_memory: 2302264 }
I support this. Being able to chart response time curves versus max heap size would be a useful comparison for capacity planning and server tuning purposes.
"Should I run 32 instances per machine at N memory limit, or 30 copies and increase the memory limit per instance by 5%?" is just the sort of question I've been asked in the past.
