vtune hangs with strace in getdents64(7, /* 0 entries */, 32768) = 0

vtune hangs with strace in getdents64(7, /* 0 entries */, 32768) = 0

amplxe-cl is hanging when I start any analysis. gdb and strace shows getdents64 function call. 

strace shows below output

getdents64(7, /* 0 entries */, 32768)   = 0
getdents64(7, /* 0 entries */, 32768)   = 0
getdents64(7, /* 0 entries */, 32768)   = 0
getdents64(7, /* 0 entries */, 32768)   = 0
getdents64(7, /* 0 entries */, 32768)   = 0
getdents64(7, /* 0 entries */, 32768)   = 0
getdents64(7, /* 0 entries */, 32768)   = 0
getdents64(7, /* 0 entries */, 32768)   = 0
getdents64(7, /* 0 entries */, 32768)   = 0

any idea what is the issue? It used to work before with no issues.

 

Thanks and Regards,

C Jaiprakash

 

 

publicaciones de 6 / 0 nuevos
Último envío
Para obtener más información sobre las optimizaciones del compilador, consulte el aviso sobre la optimización.

Can you post gdb dump file?

Below is the command I ran

amplxe-cl -collect snb-general-exploration -knob collect-memory-bandwidth=true --duration unlimited

I dont get any message when this is executed. 

Below is top command output

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
20178 root      20   0  261m  26m  20m R  100  0.0   1:17.57 amplxe-cl
20468 root      20   0 17368 1708  976 R    0  0.0   0:00.25 top

I attached gdb to the PID 20178, below is backtrace shown in gdb

#0  0x00007ffff0eb8dea in __getdents64 () from /lib64/libc.so.6
#1  0x00007ffff0eb88f7 in readdir_r () from /lib64/libc.so.6
#2  0x00007ffff18fb724 in boost::filesystem2::detail::dir_itr_increment(void*&, void*&, std::string&, boost::filesystem2::file_status&, boost::filesystem2::file_status&) ()
   from /var/opt/teradata/intel/vtune_amplifier_xe_2013/bin64/../lib64/libamplxe_boost_filesystem_1.47.so
#3  0x00007ffff772fd27 in boost::filesystem2::basic_directory_iterator<boost::filesystem2::basic_path<std::string, boost::filesystem2::path_traits> >::increment() ()
   from /var/opt/teradata/intel/vtune_amplifier_xe_2013/bin64/../lib64/libamplxe_cctrl_core_2.29.so
#4  0x00007ffff2935ef4 in cfgmgr2::MessageCatalogSource::loadMessageCatalog(std::list<boost::filesystem2::basic_path<std::string, boost::filesystem2::path_traits>, std::allocator<boost::filesystem2::basic_path<std::string, boost::filesystem2::path_traits> > > const&, std::string const&) const ()
   from /var/opt/teradata/intel/vtune_amplifier_xe_2013/bin64/../lib64/libamplxe_cfgmgr_2.15.so
#5  0x00007ffff29352b6 in cfgmgr2::MessageCatalogSource::catalog(std::string const&) const ()
   from /var/opt/teradata/intel/vtune_amplifier_xe_2013/bin64/../lib64/libamplxe_cfgmgr_2.15.so
#6  0x00007ffff2937175 in cfgmgr2::getMessageCatalog(std::string const&) ()
   from /var/opt/teradata/intel/vtune_amplifier_xe_2013/bin64/../lib64/libamplxe_cfgmgr_2.15.so
#7  0x00007ffff6e2a8ef in dicerengine2::internal::EngineUtil::getMessageCatalog() ()
   from /var/opt/teradata/intel/vtune_amplifier_xe_2013/bin64/../lib64/libamplxe_dicerengine_core_2.13.so
#8  0x00007ffff6e2a45e in dicerengine2::internal::EngineUtil::translate(CPIL_2_14::strings::ustring8 const&, CPIL_2_14::types::variant const&, CPIL_2_14::types::variant const&, CPIL_2_14::types::variant const&) ()
   from /var/opt/teradata/intel/vtune_amplifier_xe_2013/bin64/../lib64/libamplxe_dicerengine_core_2.13.so
#9  0x00007ffff71eedc4 in dicerengine2::CliManager::initActionDescriptions(clpt_3_3::IParser*) const ()
   from /var/opt/teradata/intel/vtune_amplifier_xe_2013/bin64/../lib64/libamplxe_dicerengine_climgr_2.13.so
#10 0x000000000040bc8d in ?? ()
#11 0x000000000041dab7 in ?? ()
#12 0x00007ffff0e35be6 in __libc_start_main () from /lib64/libc.so.6
#13 0x0000000000406e8a in ?? ()
#14 0x00007fffffffde28 in ?? ()
#15 0x000000000000001c in ?? ()
#16 0x0000000000000007 in ?? ()
#17 0x00007fffffffe229 in ?? ()
#18 0x00007fffffffe233 in ?? ()
#19 0x00007fffffffe23c in ?? ()
#20 0x00007fffffffe254 in ?? ()
#21 0x00007fffffffe25a in ?? ()
#22 0x00007fffffffe278 in ?? ()
#23 0x00007fffffffe283 in ?? ()
#24 0x0000000000000000 in ?? ()

 

Thanks

 

My uneducated guess is this call  could be responsible for the hang.The hang itself could be originating deep inside the called function(s).

#2  0x00007ffff18fb724 in boost::filesystem2::detail::dir_itr_increment(void*&, void*&, std::string&, boost::filesystem2::file_status&, boost::filesystem2::file_status&) ()

I suppose that dir_itr_increment () is calling readdir_r () which in turn calls  __getdents64 () and code execution is stuck either in __getdents64() or deeper in the next call chain.

By doing a little research on the web it seems that your hang description could be related to deadlock condition.

It seems that this issue is more Linux kernel related.

Deje un comentario

Por favor inicie sesión para agregar un comentario. ¿No es socio? Únase ya