Hi Pavan
         I tried the below script for testing my gluster setup:

date > io_time.log
for (( j = 30000 ; j <= 40000; j++ ));
do
dd if=/dev/zero of=file$j.out bs=512K count=2
done
date >> io_time.log

During the script in progress, ls command was in hanged state.Also the Server load was high (100) but the cpu was idle.I tried glusterfs with previous version also but the same problem.

         Please let me how to solve this problem.