Hi Andy, I managed to reproduce the dbench problem. (not sure if its the same thing or not - but symptoms are same). My problem has nothing to do with ext3. I can produce it on ext2, jfs also. Whats happening on my machine is .. dbench forks of 4 children and sends them a signal to start the work. 3 out of 4 children gets the signal and does the work. One of the child never gets the signal so, it waits forever in pause(). So, parent waits for a longtime to kill it. BTW, I was trying to find out when this problem started showing up. So far, I managed to track it to 2.6.23-rc4. (2.6.23-rc3 doesn't seem to have this problem). I am going to do bi-sect and find out which patch caused this. I am using dbench-2.0 which consistently reproduces the problem on my x86-64 box. Did you find anything new with your setup ? Thanks, Badari - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html