The root cause of this issue is the overhead added by the network ping time monitoring feature for the mgr to process. We have a fix that disables sending the network ping times related stats to the mgr and Eric has helped verify the fix(Thanks Eric!) - https://tracker.ceph.com/issues/43364#note-9. We'll get this fix out in 14.2.6 after the holidays. On Fri, Dec 20, 2019 at 6:24 PM Neha Ojha <nojha@xxxxxxxxxx> wrote: > > Not yet, but we have a theory and a test build in > https://tracker.ceph.com/issues/43364#note-6, if anybody would like to > give it a try. > > Thanks, > Neha > > On Fri, Dec 20, 2019 at 2:31 PM Sasha Litvak > <alexander.v.litvak@xxxxxxxxx> wrote: > > > > Was the root cause found and fixed? If so, will the fix be available in 14.2.6 or sooner? > > > > On Thu, Dec 19, 2019 at 5:48 PM Mark Nelson <mnelson@xxxxxxxxxx> wrote: > >> > >> Hi Paul, > >> > >> > >> Thanks for gathering this! It looks to me like at the very least we > >> should redo the fixed_u_to_string and fixed_to_string functions in > >> common/Formatter.cc. That alone looks like it's having a pretty > >> significant impact. > >> > >> > >> Mark > >> > >> > >> On 12/19/19 2:09 PM, Paul Mezzanini wrote: > >> > 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 | pfmeec@xxxxxxx > >> > > >> > 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 <mnelson@xxxxxxxxxx> > >> > Sent: Thursday, December 19, 2019 11:47 AM > >> > To: ceph-users@xxxxxxx > >> > Subject: 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 <cobanserkan@xxxxxxxxx > >> >> <mailto:cobanserkan@xxxxxxxxx>> 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 > >> >> <toby@xxxxxxxxxxxxxxxxx <mailto:toby@xxxxxxxxxxxxxxxxx>> 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@xxxxxxx > >> >> <mailto:ceph-users@xxxxxxx> > >> >> > To unsubscribe send an email to ceph-users-leave@xxxxxxx > >> >> <mailto:ceph-users-leave@xxxxxxx> > >> >> _______________________________________________ > >> >> ceph-users mailing list -- ceph-users@xxxxxxx > >> >> <mailto:ceph-users@xxxxxxx> > >> >> To unsubscribe send an email to ceph-users-leave@xxxxxxx > >> >> <mailto:ceph-users-leave@xxxxxxx> > >> >> > >> >> > >> >> _______________________________________________ > >> >> ceph-users mailing list -- ceph-users@xxxxxxx > >> >> To unsubscribe send an email to ceph-users-leave@xxxxxxx > >> > _______________________________________________ > >> > ceph-users mailing list -- ceph-users@xxxxxxx > >> > To unsubscribe send an email to ceph-users-leave@xxxxxxx > >> _______________________________________________ > >> ceph-users mailing list -- ceph-users@xxxxxxx > >> To unsubscribe send an email to ceph-users-leave@xxxxxxx > > > > _______________________________________________ > > ceph-users mailing list -- ceph-users@xxxxxxx > > To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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