When I run pstree -p pid on Linux, it displays a thread tree of a process.
Many processes contains threads called "pool". Some of them live a short lifecycle. They look like:
tracker-extract(2785)─┬─{dconf worker}(2825)
├─{gdbus}(2826)
├─{gmain}(2827)
├─{pool}(2975)
├─{pool}(2976)
├─{pool}(2977)
├─{pool}(2978)
├─{pool}(2979)
├─{pool}(2980)
├─{pool}(2981)
├─{pool}(2982)
├─{pool}(2983)
└─{pool}(2984)
What are those "pool" threads? What kind of jobs are they responsible to?
It's quite hard to google it. All results come out related to thread pool. Do they have relation with thread pool?
Thanks for providing hints. I finally accidentally use perf and find those pool threads are responsible for thread cloning or something like this.