cpu percent of process always 0.0

[aipv]

Hi,

I am using psutil in python 2.7 to get the cpu percent of the process, however, it always get 0.0 for current process. The system cpu percent is correct, and the cpu_time per process is also increased.

here is the test code which I am using:

def test_monitor():
    while True:
        cpu_times = psutil.cpu_times()
        print(cpu_times)
        cpu_percent = psutil.cpu_percent()
        print(cpu_percent)
        p = psutil.Process()
        p_cpu_times = p.cpu_times()
        print(p_cpu_times)
        cpu_percent = p.cpu_percent(1)
        print(cpu_percent)
        for i in range(10000000):
            j = i * i
        time.sleep(0.1)

Here is the output of the test code:

scputimes(user=3659.16, nice=36.96, system=971.1, idle=45878.04, iowait=1802.11, irq=1.34, softirq=18.26, steal=0.0, guest=0.0, guest_nice=0.0)
0.0
pcputimes(user=0.06, system=0.01)
0.0
scputimes(user=3661.55, nice=36.96, system=971.24, idle=45882.6, iowait=1802.11, irq=1.34, softirq=18.26, steal=0.0, guest=0.0, guest_nice=0.0)
35.6
pcputimes(user=2.39, system=0.12)
0.0
scputimes(user=3663.96, nice=36.96, system=971.33, idle=45886.99, iowait=1802.16, irq=1.34, softirq=18.26, steal=0.0, guest=0.0, guest_nice=0.0)
36.8
pcputimes(user=4.72, system=0.17)
0.0
....

Can anybody help to check where's the problem? thank you.

Best Regards,
Qing

[giampaolo]

Try this:

def test_monitor():
    p = psutil.Process()
    while True:
         print(p.cpu_percent(interval=1))