[chromium-discuss] How can I find out what Chrome_IOThread is doing in each moment?

[m***@gmail.com]

There are a lot of interactions between UI thread and IO thread. Sometimes
UI thread waits for IO thread for a long time which is not desirable. So, I
am going to investigate what IO thread is doing in each moment to get more
information in details, so I need to instrument IO thread but I am not sure
about the right part of the source code which I should insert my
TRACE_EVENT. Do you know where is the best place to do that?

Thanks in advance,