Comment 34 for bug 513848

@tgabi:

I've uploaded a new test kernel to http://people.canonical.com/~cndougla/513848/linux-image-2.6.31-21-server_2.6.31-21.58~printk2_amd64.deb. This kernel will print out each time the calc_load_tasks counter is changed between the time each cpu increments it to represent the running processes to the time the load avg is calculated. I'm guessing that on your server we will see the counter incremented a few times and then decremented back down to 0 by the time the load avg is calculated.

Please test this kernel by capturing the dmesg for a few minutes. We don't need the dstat output for this anymore, since we know the load avg is being calculated correctly from the calc_load_tasks value. Attach the dmesg here and we'll take a look.

Thanks