Sorry for my pool English.
The problem is how and I find out the db operations in logs.
 If I run ">db.foo.find();"  is the any log logged this operation?
thx!

Normally mongod will only log operations that are slower than the --slowms
value (default 100ms).

You can enable the query profiler at a level of "2" to log all read/write
operations to the system.profile capped collection:
  db.setProfilingLevel(2);
  http://www.mongodb.org/display/DOCS/Database+Profiler

Note that there is a separate system.profile collection per database.

Cheers,
Stephen

Thank you very much, it will work.

Stephen Steneker於 2012年11月4日星期日UTC+8下午4時33分37秒寫道：