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westhood/proc_starttime.py

Created July 9, 2011 13:36
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get start time of process on linux via python
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proc_starttime.py
def proc_starttime(pid):
p = re.compile(r"^btime (\d+)$", re.MULTILINE)
m = p.search(open("/proc/stat").read())
btime = int(m.groups()[0])
clk_tck = os.sysconf(os.sysconf_names["SC_CLK_TCK"])
stime = int(open("/proc/%d/stat" % pid).read().split()[21]) / clk_tck
return btime + stime
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