Re: pgadmin--pgagent---the process hang by unknow reasons - Mailing list pgadmin-support

Hi Support

 

   I using pgagent over 2 years. There are over 30 jobs running by pgagent.  Recently. I found a problem that sometime the pgagent hang by unknow reasons.

   From the stack information. Look like the pagent experience  dead-lock issue in code.

   The stack display many thread stop on this function “in __lll_lock_wait”

   If you need more information. Please let me know. I suspect this is a bug.

 

I collect to pgagent trace log and stack information on the attachment.

 

pgagent trace log	pg_agent_11_24.log pg_agent_11_26.log
pgagent process stack	others information.

 

 

 

version: pgagent_10-3.4.0-10.rhel6.x86_64 PG 10.5   The typical stack information.   [postgres@sltfjfrauxq pgagent_pd]$ cat 23389.stark.1 Thread 7 (Thread 0x7ff745f5c700 (LWP 906)): #0  0x00007ff74b003334 in __lll_lock_wait () from /lib64/libpthread.so.0 #1  0x00007ff74affe5d8 in _L_lock_854 () from /lib64/libpthread.so.0 #2  0x00007ff74affe4a7 in pthread_mutex_lock () from /lib64/libpthread.so.0 #3  0x00007ff74ba979c9 in wxMutexInternal::Lock() () from /usr/lib64/libwx_baseu-2.8.so.0 #4  0x00007ff74c15b819 in DBconn::Return() () #5  0x00007ff74c161217 in Job::Execute() () #6  0x00007ff74c162899 in JobThread::Entry() () #7  0x00007ff74ba99021 in wxThreadInternal::PthreadStart(wxThread*) () from /usr/lib64/libwx_baseu-2.8.so.0 #8  0x00007ff74affcaa1 in start_thread () from /lib64/libpthread.so.0 #9  0x00007ff74ad49c4d in clone () from /lib64/libc.so.6 Thread 6 (Thread 0x7ff72ffff700 (LWP 908)): #0  0x00007ff74b003334 in __lll_lock_wait () from /lib64/libpthread.so.0 #1  0x00007ff74affe5d8 in _L_lock_854 () from /lib64/libpthread.so.0 #2  0x00007ff74affe4a7 in pthread_mutex_lock () from /lib64/libpthread.so.0 #3  0x00007ff74ba979c9 in wxMutexInternal::Lock() () from /usr/lib64/libwx_baseu-2.8.so.0 #4  0x00007ff74c15b819 in DBconn::Return() () #5  0x00007ff74c161217 in Job::Execute() () #6  0x00007ff74c162899 in JobThread::Entry() () #7  0x00007ff74ba99021 in wxThreadInternal::PthreadStart(wxThread*) () from /usr/lib64/libwx_baseu-2.8.so.0 #8  0x00007ff74affcaa1 in start_thread () from /lib64/libpthread.so.0 #9  0x00007ff74ad49c4d in clone () from /lib64/libc.so.6 Thread 5 (Thread 0x7ff74695d700 (LWP 910)): #0  0x00007ff74b003334 in __lll_lock_wait () from /lib64/libpthread.so.0 #1  0x00007ff74affe5d8 in _L_lock_854 () from /lib64/libpthread.so.0 #2  0x00007ff74affe4a7 in pthread_mutex_lock () from /lib64/libpthread.so.0 #3  0x00007ff74ba979c9 in wxMutexInternal::Lock() () from /usr/lib64/libwx_baseu-2.8.so.0 #4  0x00007ff74c15b819 in DBconn::Return() () #5  0x00007ff74c161217 in Job::Execute() () #6  0x00007ff74c162899 in JobThread::Entry() () #7  0x00007ff74ba99021 in wxThreadInternal::PthreadStart(wxThread*) () from /usr/lib64/libwx_baseu-2.8.so.0 #8  0x00007ff74affcaa1 in start_thread () from /lib64/libpthread.so.0 #9  0x00007ff74ad49c4d in clone () from /lib64/libc.so.6 Thread 4 (Thread 0x7ff74735e700 (LWP 1565)): #0  0x00007ff74b003334 in __lll_lock_wait () from /lib64/libpthread.so.0 #1  0x00007ff74affe5d8 in _L_lock_854 () from /lib64/libpthread.so.0 #2  0x00007ff74affe4a7 in pthread_mutex_lock () from /lib64/libpthread.so.0 #3  0x00007ff74ba979c9 in wxMutexInternal::Lock() () from /usr/lib64/libwx_baseu-2.8.so.0 #4  0x00007ff74c15b819 in DBconn::Return() () #5  0x00007ff74c161217 in Job::Execute() () #6  0x00007ff74c162899 in JobThread::Entry() () #7  0x00007ff74ba99021 in wxThreadInternal::PthreadStart(wxThread*) () from /usr/lib64/libwx_baseu-2.8.so.0 #8  0x00007ff74affcaa1 in start_thread () from /lib64/libpthread.so.0 #9  0x00007ff74ad49c4d in clone () from /lib64/libc.so.6 Thread 3 (Thread 0x7ff74555b700 (LWP 1567)): #0  0x00007ff74ad40403 in poll () from /lib64/libc.so.6 #1  0x00007ff74bd1c28f in ?? () from /usr/lib64/libpq.so.5 #2  0x00007ff74bd1c310 in ?? () from /usr/lib64/libpq.so.5 #3  0x00007ff74bd178e2 in ?? () from /usr/lib64/libpq.so.5 #4  0x00007ff74bd1865f in PQconnectdb () from /usr/lib64/libpq.so.5 #5  0x00007ff74c15ad71 in DBconn::Connect(wxString const&) () #6  0x00007ff74c15af73 in DBconn::DBconn(wxString const&, wxString const&) () #7  0x00007ff74c15bfe8 in DBconn::Get(wxString const&, wxString const&) () #8  0x00007ff74c16108f in Job::Execute() () #9  0x00007ff74c162899 in JobThread::Entry() () #10 0x00007ff74ba99021 in wxThreadInternal::PthreadStart(wxThread*) () from /usr/lib64/libwx_baseu-2.8.so.0 #11 0x00007ff74affcaa1 in start_thread () from /lib64/libpthread.so.0 #12 0x00007ff74ad49c4d in clone () from /lib64/libc.so.6 Thread 2 (Thread 0x7ff744b5a700 (LWP 1569)): #0  0x00007ff74b003334 in __lll_lock_wait () from /lib64/libpthread.so.0 #1  0x00007ff74affe5d8 in _L_lock_854 () from /lib64/libpthread.so.0 #2  0x00007ff74affe4a7 in pthread_mutex_lock () from /lib64/libpthread.so.0 #3  0x00007ff74ba979c9 in wxMutexInternal::Lock() () from /usr/lib64/libwx_baseu-2.8.so.0 #4  0x00007ff74c15bf6b in DBconn::Get(wxString const&, wxString const&) () #5  0x00007ff74c16108f in Job::Execute() () #6  0x00007ff74c162899 in JobThread::Entry() () #7  0x00007ff74ba99021 in wxThreadInternal::PthreadStart(wxThread*) () from /usr/lib64/libwx_baseu-2.8.so.0 #8  0x00007ff74affcaa1 in start_thread () from /lib64/libpthread.so.0 #9  0x00007ff74ad49c4d in clone () from /lib64/libc.so.6 Thread 1 (Thread 0x7ff74c3507e0 (LWP 23389)): #0  0x00007ff74b003334 in __lll_lock_wait () from /lib64/libpthread.so.0 #1  0x00007ff74affe5d8 in _L_lock_854 () from /lib64/libpthread.so.0 #2  0x00007ff74affe4a7 in pthread_mutex_lock () from /lib64/libpthread.so.0 #3  0x00007ff74ba979c9 in wxMutexInternal::Lock() () from /usr/lib64/libwx_baseu-2.8.so.0 #4  0x00007ff74c15a99d in DBconn::ClearConnections(bool) () #5  0x00007ff74c15e908 in MainRestartLoop(DBconn*) () #6  0x00007ff74c15f2a3 in MainLoop() () #7  0x00007ff74c15e016 in main ()

 

 

徐志宇（Jack）

Database Engineer

    

DB Team,ITS. Lenovo China

Phone: 86-18910860709

Email:xuzy13@lenovo.com

No.6 Shangdi West Road, Haidian District Beijing, China, 100085