What is a pool thread

Question

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?

This isn't really programming related and should probable go on server fault. — Jon Surrell, Mar 10 '15 at 08:58

score 1 · Accepted Answer · answered Mar 26 '15 at 05:10

1

Thanks for providing hints. I finally accidentally use perf and find those pool threads are responsible for thread cloning or something like this.

answered Mar 26 '15 at 05:10

objectkuan

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What is a pool thread

1 Answers1