Based on what we've seen with perf, we think this is the relevant section.
(attached is also the whole file)
Thread: 73 (mgr-fin) - 1000 samples
+ 100.00% clone
+ 100.00% start_thread
+ 100.00% Finisher::finisher_thread_entry()
+ 99.40% Context::complete(int)
| + 99.40% FunctionContext::finish(int)
| + 99.40% ActivePyModule::notify(std::string const&, std::string
const&)
| + 91.30% PyObject_CallMethod
| | + 91.30% call_function_tail
| | + 91.30% PyObject_Call
| | + 91.30% instancemethod_call
| | + 91.30% PyObject_Call
| | + 91.30% function_call
| | + 91.30% PyEval_EvalCodeEx
| | + 88.40% PyEval_EvalFrameEx
| | | + 88.40% PyEval_EvalFrameEx
| | | + 88.40% ceph_state_get(BaseMgrModule*, _object*)
| | | + 88.40% ActivePyModules::get_python(std::string
const&)
| | | + 51.10%
PGMap::dump_osd_stats(ceph::Formatter*) const
| | | | + 51.10%
osd_stat_t::dump(ceph::Formatter*) const
| | | | + 22.50%
ceph::fixed_u_to_string(unsigned long, int)
| | | | | + 10.50% std::basic_ostringstream<char,
std::char_traits<char>, std::allocator<char>
>::basic_ostringstream(std::_Ios_Openmode)
| | | | | | + 9.30% std::basic_ios<char, std::char_traits<char>
>::init(std::basic_streambuf<char, std::char_traits<char> >*)
| | | | | | | + 7.00% std::basic_ios<char,
std::char_traits<char> >::_M_cache_locale(std::locale const&)
| | | | | | | | + 1.60% std::ctype<char> const&
std::use_facet<std::ctype<char> >(std::locale const&)
| | | | | | | | | + 1.50% __dynamic_cast
| | | | | | | | | + 0.80%
__cxxabiv1::__vmi_class_type_info::__do_dyncast(long,
__cxxabiv1::__class_type_info::__sub_kind, __cxxabiv1::__class_type_info const*,
void const*, __cxxabiv1::__class_type_info const*, void const*,
__cxxabiv1::__class_type_info::__dyncast_result&) const
| | | | | | | | + 1.40% bool
std::has_facet<std::ctype<char> >(std::locale const&)
| | | | | | | | | + 1.30% __dynamic_cast
| | | | | | | | | + 0.90%
__cxxabiv1::__vmi_class_type_info::__do_dyncast(long,
__cxxabiv1::__class_type_info::__sub_kind, __cxxabiv1::__class_type_info const*,
void const*, __cxxabiv1::__class_type_info const*, void const*,
__cxxabiv1::__class_type_info::__dyncast_result&) const
| | | | | | | | + 1.10% bool std::has_facet<std::num_put<char,
std::ostreambuf_iterator<char, std::char_traits<char> > > >(std::locale const&)
| | | | | | | | | + 0.90% __dynamic_cast
| | | | | | | | + 1.00% bool std::has_facet<std::num_get<char,
std::istreambuf_iterator<char, std::char_traits<char> > > >(std::locale const&)
| | | | | | | | | + 0.70% __dynamic_cast
| | | | | | | | | + 0.10%
std::locale::id::_M_id() const
| | | | | | | | | + 0.10%
_ZNKSt6locale2id5_M_idEv@plt
| | | | | | | | + 0.80% std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > > const& std::use_facet<std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > > >(std::locale const&)
| | | | | | | | + 0.70% std::num_get<char, std::istreambuf_iterator<char,
std::char_traits<char> > > const& std::use_facet<std::num_get<char, std::istreambuf_iterator<char,
std::char_traits<char> > > >(std::locale const&)
| | | | | | | | + 0.10%
_ZSt9has_facetISt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEEEbRKSt6locale@plt
| | | | | | | + 2.00% std::ios_base::_M_init()
| | | | | | | | + 0.80%
std::locale::operator=(std::locale const&)
| | | | | | | | + 0.80% std::locale::locale()
| | | | | | | | + 0.30% std::locale::~locale()
| | | | | | | | + 0.10% _ZNSt6localeC1Ev@plt
| | | | | | | + 0.20%
_ZNSt8ios_base7_M_initEv@plt
| | | | | | + 0.90% std::locale::locale()
| | | | | | + 0.10% std::ios_base::ios_base()
| | | | | | + 0.10%
_ZNSt9basic_iosIcSt11char_traitsIcEE4initEPSt15basic_streambufIcS1_E@plt
| | | | | + 2.80% std::ostream&
std::ostream::_M_insert<unsigned long>(unsigned long)
| | | | | | + 2.40% std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > >::do_put(std::ostreambuf_iterator<char, std::char_traits<char>
>, std::ios_base&, char, unsigned long) const
| | | | | | | + 2.10% std::ostreambuf_iterator<char, std::char_traits<char> >
std::num_put<char, std::ostreambuf_iterator<char, std::char_traits<char> > >::_M_insert_int<unsigned
long>(std::ostreambuf_iterator<char, std::char_traits<char> >, std::ios_base&, char, unsigned long) const
| | | | | | | | + 1.60% std::basic_streambuf<char,
std::char_traits<char> >::xsputn(char const*, long)
| | | | | | | | | + 1.40% std::basic_stringbuf<char,
std::char_traits<char>, std::allocator<char> >::overflow(int)
| | | | | | | | | | + 0.90%
std::string::reserve(unsigned long)
| | | | | | | | | | + 0.10% std::basic_stringbuf<char,
std::char_traits<char>, std::allocator<char> >::_M_sync(char*, unsigned long,
unsigned long)
| | | | | | | | | | + 0.10%
_ZNSt15basic_stringbufIcSt11char_traitsIcESaIcEE7_M_syncEPcmm@plt
| | | | | | | | | + 0.20% __memcpy_ssse3_back
| | | | | | | | + 0.20% ???
| | | | | | | | + 0.10% std::num_put<char,
std::ostreambuf_iterator<char, std::char_traits<char> > >::_M_pad(char, long,
std::ios_base&, char*, char const*, int&) const
| | | | | | | + 0.10%
_ZNKSt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE13_M_insert_intImEES3_S3_RSt8ios_basecT_@plt
| | | | | | + 0.10%
std::ostream::sentry::sentry(std::ostream&)
| | | | | + 2.80% std::basic_stringbuf<char,
std::char_traits<char>, std::allocator<char> >::str() const
| | | | | | + 1.00% std::string::assign(std::string
const&)
| | | | | | + 0.90% char*
std::string::_S_construct<char*>(char*, char*, std::allocator<char> const&,
std::forward_iterator_tag) [clone .part.1796]
| | | | | + 1.50% std::string::append(char
const*, unsigned long)
| | | | | | + 1.20%
std::string::reserve(unsigned long)
| | | | | | + 0.60%
std::string::_Rep::_M_clone(std::allocator<char> const&, unsigned long)
| | | | | | + 0.10% tc_free
| | | | | + 1.20%
std::string::_Rep::_M_dispose(std::allocator<char> const&) [clone .isra.97]
[clone .part.98]
| | | | | + 1.00% std::string::append(std::string
const&)
| | | | | | + 0.70%
std::string::reserve(unsigned long)
| | | | | | + 0.10% __memcpy_ssse3_back
| | | | | + 1.00% std::basic_string<char,
std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&,
unsigned long, unsigned long)
| | | | | | + 0.80% char*
std::string::_S_construct<char*>(char*, char*, std::allocator<char> const&,
std::forward_iterator_tag) [clone .part.220]
| | | | | + 0.40% std::locale::~locale()
| | | | | + 0.20% tc_free
| | | | | + 0.20% __strlen_sse2_pminub
| | | | | + 0.10% std::ios_base::~ios_base()
| | | | | + 0.10% _ZNSt8ios_baseD2Ev@plt
| | | | | + 0.10%
_ZNKSt15basic_stringbufIcSt11char_traitsIcESaIcEE3strEv@plt
| | | | + 18.20%
PyFormatter::open_object_section(char const*)
| | | | | + 17.10% PyDict_New
| | | | | | + 16.70% _PyObject_GC_New
| | | | | | + 16.70% _PyObject_GC_Malloc
| | | | | | + 16.60% collect
| | | | | | | + 8.10% dict_traverse
| | | | | | | | + 3.20% visit_reachable
| | | | | | | | | + 0.10% type_is_gc
| | | | | | | | + 2.80% visit_decref
| | | | | | | | + 1.60% PyDict_Next
| | | | | | | + 1.30% list_traverse
| | | | | | | | + 0.40% visit_decref
| | | | | | | | + 0.30% visit_reachable
| | | | | | | + 0.60% func_traverse
| | | | | | | + 0.40% _PyDict_MaybeUntrack
| | | | | | | + 0.10% type_traverse
| | | | | | | + 0.10% subtype_traverse
| | | | | | | + 0.10% set_traverse
| | | | | | | + 0.10% class_traverse
| | | | | | | + 0.10%
_PyDict_MaybeUntrack@plt
| | | | | | + 0.10% PyObject_Malloc
| | | | | + 1.00%
PyFormatter::dump_pyobject(char const*, _object*)
| | | | | + 0.40% PyString_FromString
| | | | | + 0.20%
dict_set_item_by_hash_or_entry
| | | | | + 0.20% PyDict_SetItem
| | | | | + 0.10% app1
| | | | + 6.60%
ceph::Formatter::dump_format_unquoted(char const*, char const*, ...)
| | | | | + 6.60%
PyFormatter::dump_format_va(char const*, char const*, bool, char const*,
__va_list_tag*)
| | | | | + 3.90% __vsnprintf_chk
| | | | | | + 3.40% vfprintf
| | | | | | | + 0.50% strchrnul
| | | | | | | + 0.40% __GI__IO_default_xsputn
| | | | | | | + 0.20% tc_free
| | | | | | | + 0.10% free@plt
| | | | | | | + 0.10% (anonymous
namespace)::free_null_or_invalid(void*, void (*)(void*)) [clone .constprop.41]
| | | | | | + 0.20% _IO_no_init
| | | | | | + 0.10%
_IO_str_init_static_internal
| | | | | + 1.50%
PyFormatter::dump_pyobject(char const*, _object*)
| | | | | | + 0.50% PyString_FromString
| | | | | | + 0.40% PyDict_SetItem
| | | | | | + 0.10%
dict_set_item_by_hash_or_entry
| | | | | | + 0.10% PyDict_SetItem@plt
| | | | | + 1.20% PyString_FromString
| | | | | + 0.60% PyObject_Malloc
| | | | | + 0.20% __strlen_sse2_pminub
| | | | | + 0.10% __memcpy_ssse3_back
| | | | + 0.90% ctime_r
| | | | + 0.80%
PyFormatter::open_array_section(char const*)
| | | | + 0.40%
std::string::_Rep::_M_dispose(std::allocator<char> const&) [clone .isra.846]
[clone .part.847]
| | | | + 0.30% PyFormatter::dump_int(char
const*, long)
| | | | + 0.20% PyFormatter::close_section()
| | | | + 0.10% tc_free
| | | | + 0.10% std::basic_string<char, std::char_traits<char>,
std::allocator<char> >::basic_string(char const*, std::allocator<char> const&)
| | | | + 0.10%
std::_Rb_tree_increment(std::_Rb_tree_node_base const*)
| | | | + 0.10%
pow2_hist_t::dump(ceph::Formatter*) const
| | | | + 0.10%
objectstore_perf_stat_t::dump(ceph::Formatter*) const
| | | | + 0.10% PyFormatter::dump_string(char const*,
std::basic_string_view<char, std::char_traits<char> >)
| | | | + 0.10% PyFormatter::dump_pyobject(char
const*, _object*)
| | | + 21.80% Mutex::lock(bool)
| | | | + 21.80% pthread_mutex_lock
| | | | + 21.80% _L_lock_883
| | | | + 21.80% __lll_lock_wait
| | | + 11.70% PGMap::dump(ceph::Formatter*) const
| | | | + 11.70%
PGMap::dump_pg_stats(ceph::Formatter*, bool) const
| | | | + 10.90%
pg_stat_t::dump(ceph::Formatter*) const
| | | | | + 4.20% PyFormatter::dump_stream(char
const*)
| | | | | | + 2.80% std::basic_ios<char, std::char_traits<char>
>::init(std::basic_streambuf<char, std::char_traits<char> >*)
| | | | | | | + 2.10% std::basic_ios<char,
std::char_traits<char> >::_M_cache_locale(std::locale const&)
| | | | | | | | + 0.50% std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > > const& std::use_facet<std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > > >(std::locale const&)
| | | | | | | | + 0.50% bool std::has_facet<std::num_put<char,
std::ostreambuf_iterator<char, std::char_traits<char> > > >(std::locale const&)
| | | | | | | | + 0.40% bool std::has_facet<std::num_get<char,
std::istreambuf_iterator<char, std::char_traits<char> > > >(std::locale const&)
| | | | | | | | + 0.20% std::num_get<char, std::istreambuf_iterator<char,
std::char_traits<char> > > const& std::use_facet<std::num_get<char, std::istreambuf_iterator<char,
std::char_traits<char> > > >(std::locale const&)
| | | | | | | | + 0.20% std::ctype<char> const&
std::use_facet<std::ctype<char> >(std::locale const&)
| | | | | | | | + 0.20% bool
std::has_facet<std::ctype<char> >(std::locale const&)
| | | | | | | | + 0.10%
_ZSt9has_facetISt7num_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEEEbRKSt6locale@plt
| | | | | | | + 0.70% std::ios_base::_M_init()
| | | | | | + 0.50%
tcmalloc::ThreadCache::FetchFromCentralCache(unsigned int, int)
| | | | | | + 0.40% std::string::assign(char
const*, unsigned long)
| | | | | | + 0.20% std::locale::locale()
| | | | | | + 0.10% std::ios_base::ios_base()
| | | | | + 1.80%
object_stat_collection_t::dump(ceph::Formatter*) const
| | | | | | + 1.70%
object_stat_sum_t::dump(ceph::Formatter*) const
| | | | | | | + 1.40%
PyFormatter::dump_pyobject(char const*, _object*)
| | | | | | | | + 0.60% dictresize
| | | | | | | | + 0.30% PyString_FromString
| | | | | | | | + 0.20% PyDict_SetItem
| | | | | | | | + 0.10%
dict_set_item_by_hash_or_entry
| | | | | | | + 0.20% PyFormatter::dump_int(char
const*, long)
| | | | | | + 0.10%
PyFormatter::open_object_section(char const*)
| | | | | + 1.80%
PyFormatter::open_array_section(char const*)
| | | | | | + 1.60% PyList_New
| | | | | | | + 1.60% _PyObject_GC_New
| | | | | | | + 1.60% _PyObject_GC_Malloc
| | | | | | | + 1.60% collect
| | | | | | | + 0.80% dict_traverse
| | | | | | | + 0.10% subtype_traverse
| | | | | | | + 0.10% list_traverse
| | | | | | | + 0.10% func_traverse
| | | | | | | + 0.10% _PyDict_MaybeUntrack
| | | | | | + 0.20%
PyFormatter::dump_pyobject(char const*, _object*)
| | | | | + 1.70%
utime_t::localtime(std::ostream&) const
| | | | | | + 1.00% std::ostream&
std::ostream::_M_insert<long>(long)
| | | | | | | + 0.60% std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > >::do_put(std::ostreambuf_iterator<char, std::char_traits<char>
>, std::ios_base&, char, long) const
| | | | | | + 0.30% std::basic_ostream<char, std::char_traits<char> >&
std::__ostream_insert<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char>
>&, char const*, long)
| | | | | | + 0.20% __tz_convert
| | | | | + 0.90%
PyFormatter::dump_pyobject(char const*, _object*)
| | | | | + 0.20% pg_state_string(unsigned long)
| | | | | + 0.20% operator<<(std::ostream&,
eversion_t const&) [clone .isra.103]
| | | | | + 0.10% std::ostream&
std::ostream::_M_insert<unsigned long>(unsigned long)
| | | | + 0.40% PyFormatter::dump_stream(char
const*)
| | | | + 0.30% operator<<(std::ostream&, pg_t
const&)
| | | | + 0.10%
PyFormatter::open_object_section(char const*)
| | | + 2.70% PyFormatter::finish_pending_streams()
| | | | + 1.00%
std::_List_base<std::shared_ptr<PyFormatter::PendingStream>,
std::allocator<std::shared_ptr<PyFormatter::PendingStream> > >::_M_clear()
| | | | | + 0.40%
std::_Sp_counted_ptr_inplace<PyFormatter::PendingStream,
std::allocator<PyFormatter::PendingStream>,
(__gnu_cxx::_Lock_policy)2>::_M_dispose()
| | | | | + 0.20%
tcmalloc::ThreadCache::ListTooLong(tcmalloc::ThreadCache::FreeList*, unsigned
int)
| | | | + 0.70% PyFormatter::dump_pyobject(char
const*, _object*)
| | | | + 0.50% std::string::replace(unsigned
long, unsigned long, char const*, unsigned long)
| | | | + 0.30% PyString_FromString
| | | + 1.10% PyEval_RestoreThread
| | | + 1.10% PyThread_acquire_lock
| | | + 1.10% sem_wait@@GLIBC_2.2.5
| | | + 1.10% __new_sem_wait_slow.constprop.0
| | | + 1.10% do_futex_wait.constprop.1
| | + 2.90% frame_dealloc
| | + 2.90% dict_dealloc
| | + 2.90% list_dealloc
| | + 2.90% dict_dealloc
| | + 1.90% list_dealloc
| | | + 1.90% dict_dealloc
| | | + 1.70% list_dealloc
| | | + 1.50% dict_dealloc
| | | | + 0.90% dict_dealloc
| | | | + 0.10% PyObject_Free
| | | + 0.10%
tcmalloc::ThreadCache::ListTooLong(tcmalloc::ThreadCache::FreeList*, unsigned
int)
| | + 0.30% PyObject_Free
| | + 0.20% dict_dealloc
| + 8.10% Gil::Gil(SafeThreadState&, bool)
| + 8.10% PyEval_RestoreThread
| + 8.10% PyThread_acquire_lock
| + 8.10% sem_wait@@GLIBC_2.2.5
| + 8.10% __new_sem_wait_slow.constprop.0
| + 8.10% do_futex_wait.constprop.1
+ 0.60% std::condition_variable::wait(std::unique_lock<std::mutex>&)
--
Paul Mezzanini
Sr Systems Administrator / Engineer, Research Computing
Information & Technology Services
Finance & Administration
Rochester Institute of Technology
o:(585) 475-3245 | pfm...@rit.edu
CONFIDENTIALITY NOTE: The information transmitted, including attachments, is
intended only for the person(s) or entity to which it is addressed and may
contain confidential and/or privileged material. Any review, retransmission,
dissemination or other use of, or taking of any action in reliance upon this
information by persons or entities other than the intended recipient is
prohibited. If you received this in error, please contact the sender and
destroy any copies of this information.
------------------------
________________________________________
From: Mark Nelson <mnel...@redhat.com>
Sent: Thursday, December 19, 2019 11:47 AM
To: ceph-users@ceph.io
Subject: [ceph-users] Re: High CPU usage by ceph-mgr in 14.2.5
If you can get a wallclock profiler on the mgr process we might be able
to figure out specifics of what's taking so much time (ie processing
pg_summary or something else). Assuming you have gdb with the python
bindings and the ceph debug packages installed, if you (are anyone)
could try gdbpmp on the 100% mgr process that would be fantastic.
https://github.com/markhpc/gdbpmp
gdbpmp.py -p`pidof ceph-mgr` -n 1000 -o mgr.gdbpmp
If you want to view the results:
gdbpmp.py -i mgr.gdbpmp -t 1
Thanks,
Mark
On 12/19/19 6:29 AM, Paul Emmerich wrote:
We're also seeing unusually high mgr CPU usage on some setups, the
only thing they have in common seem to > 300 OSDs.
Threads using the CPU are "mgr-fin" and and "ms_dispatch"
Paul
--
Paul Emmerich
Looking for help with your Ceph cluster? Contact us at https://croit.io
croit GmbH
Freseniusstr. 31h
81247 München
www.croit.io <http://www.croit.io>
Tel: +49 89 1896585 90
On Thu, Dec 19, 2019 at 9:40 AM Serkan Çoban <cobanser...@gmail.com
<mailto:cobanser...@gmail.com>> wrote:
+1
1500 OSDs, mgr is constant %100 after upgrading from 14.2.2 to 14.2.5.
On Thu, Dec 19, 2019 at 11:06 AM Toby Darling
<t...@mrc-lmb.cam.ac.uk <mailto:t...@mrc-lmb.cam.ac.uk>> wrote:
>
> On 18/12/2019 22:40, Bryan Stillwell wrote:
> > That's how we noticed it too. Our graphs went silent after
the upgrade
> > completed. Is your large cluster over 350 OSDs?
>
> A 'me too' on this - graphs have gone quiet, and mgr is using
100% CPU.
> This happened when we grew our 14.2.5 cluster from 328 to 436 OSDs.
>
> Cheers
> Toby
> --
> Toby Darling, Scientific Computing (2N249)
> MRC Laboratory of Molecular Biology
> Francis Crick Avenue
> Cambridge Biomedical Campus
> Cambridge CB2 0QH
> Phone 01223 267070
> _______________________________________________
> ceph-users mailing list -- ceph-users@ceph.io
<mailto:ceph-users@ceph.io>
> To unsubscribe send an email to ceph-users-le...@ceph.io
<mailto:ceph-users-le...@ceph.io>
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