Date: Tue, 13 May 2008 16:26:45 +0300 From: Andriy Gapon <avg@icyb.net.ua> To: freebsd-threads@freebsd.org Subject: RELENG_7 libthr: _umtx_op -1 errno 60 Operation timed out Message-ID: <48299715.8010303@icyb.net.ua>
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I observe the following issue with some programs (e.g. firefox) from time. A completely idle program suddenly starts using a lot of CPU and sometimes memory too. For example, minimized firefox with no pages open. Restarting the program make the behavior go away. On one such occasion I ran ktrace on firefox and I saw a lot of messages like the following in kdump: 13974 firefox-bin RET _umtx_op -1 errno 60 Operation timed out Attaching with gdb I also saw a quite strange stack (unfortunately firefox and the libs are without debug). I didn't save it but it looked something like the following: __error() ?? ?? pthread_cond_init() ?? I wonder what could be a cause of this. Could it be some sort of resource limitation? -- Andriy Gapon
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