metrics question

[张伟]

  I have only one Serial Dispatch Queue labeled “adboard”，and I submit some task to "adboard"'s queue, and I find the metrics output like that:

"{ label:DEFAULT, enqueued:3, dequeued:3, max_wait_time:52062.00 ms, max_run_time:1447.73 ms, total_run_time:1499.64 ms, total_wait_time:52062.25 ms }","{ label:aboard, enqueued:3, dequeued:3, max_wait_time:53461.54 ms, max_run_time:48.19 ms, total_run_time:100.05 ms, total_wait_time:53461.82 ms }"  Why the DEFAULT queue have metrics infomation even i don not submit any task to that queue?

[Hiram Chirino]

All serial dispatch queues are executed on the the global dispatch
queues. You can think of the global dispatch queues as a concurrent
thread pool.

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--
Hiram Chirino

Engineering | Red Hat, Inc.

hchi...@redhat.com | fusesource.com | redhat.com

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blog: Hiram Chirino's Bit Mojo

[张伟]

Then I can think that 

    serial dispatch queues just task queue, does not have its own thread resources. 

    global dispatch queues have task queue, and have thread resources.

Rigth?

在 2013年6月24日星期一UTC+8下午10时39分03秒，Hiram Chirino写道：

[Christian Posta]

You got it. That's correct.

Christian Posta

http://www.christianposta.com/blog

twitter: @christianposta

[张伟]

Thanks Christian Posta and Hiram Chirino  very much！

在 2013年6月25日星期二UTC+8上午11时18分49秒，christian.posta写道：