Subj : why my threads do not wake up
To   : comp.programming.threads
From : Jingbo
Date : Thu Aug 18 2005 11:05 am

Hi,

I created 8 threads to do some tasks in parallel. I ran my program on a
SunFire which has 8 CPUs. I found that only 2 or 3 threads are working
on their tasks. Other threads are waiting in pthread_cond_wait(). I
print a message after pthread_cond_wait(), and found out they are never
waken up.

I'm sure that there are plenty of jobs on the queue and
pthread_cond_broadcast() is called and there is no other processes
running on the server therefore CPUs are idel and sometimes my program
can use all 8 CPUs.

My question is, why Solaris did not put my threads on CPU even if there
are idel CPUs?

Thanks.

.