Date: Fri, 05 Aug 2011 21:16:51 -0700 From: Yuri <yuri@rawbw.com> To: freebsd-hackers@freebsd.org Subject: top(1) loses process user time count when threads end Message-ID: <4E3CC033.6070604@rawbw.com>
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I have the process that first runs in 3 threads but later two active threads exit. top(1) shows this moment this way (1 sec intervals): 30833 yuri 3 76 0 4729M 4225M nanslp 4 0:32 88.62% app 30833 yuri 3 76 0 4729M 4225M nanslp 6 0:34 90.92% app 30833 yuri 1 96 0 4729M 4225M CPU1 1 0:03 1.17% app 30833 yuri 1 98 0 4729M 4226M CPU1 1 0:04 12.89% app Process time goes down: 0:34 -> 0:03. Also WCPU goes down 90.92% -> 1.17% even though this process is CPU bound and does intense things right after threads exit. getrusage(2) though, called in the process, shows the correct user time. I think this is the major bug in the process time accounting. 8.2-STABLE Yuri
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