I set the councurrency level 10 by pthread_setconcurrency(10) and started 10 threads to accomplish some task but the result showed that It was performed by the 1st thread only and others just exited blankly. It means others except the 1st thread didnt get the CPU. But, I dont kno what went wrong though I used the pthread_setconcurrency() function...I am usin kernel v2.4.21.8 on INTEL p4 with RHEL OS. I had also added lpthread library while compiling. Please help me out...Thanx in advance... Regards, Jaydeep Chokshi. __________________________________ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250 -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/