multi threading & load average

[Mohsen Pahlevanzadeh]

Dear all,
I wrote a program & when i monitor it with "top" command, i see an
incremental load average.When i see with a profiler program same oprof,i
saw function of my thread has 66%  activity.
I read many body of that function,but i have got 1 result: i didn't use
thread as safely.
Do you know on attributes of thread that i decrease load average of
system?
help me...
Sorry for my language.....