Hello :
I am trying to improve rgw read performance. I am using ceph
12.2.4 ， using beast frontend, but the code of beast frontend comes
from 13.2.2. Of course, the original is the same . I user perf to
track cpu usage , and the results is the following. Is this normal ,
or if I can do something to change this ?
47.95% [kernel] [k] native_queued_spin_lock_slowpath
4.95% libstdc++.so.6.0.19 [.] std::locale::locale
3.30% libstdc++.so.6.0.19 [.] std::locale::~locale
2.05% libstdc++.so.6.0.19 [.] std::num_put<char,
std::ostreambuf_iterator<char, std::char_traits<char> >
>::_M_insert_int<long>
1.65% libstdc++.so.6.0.19 [.]
std::has_facet<std::num_get<char, std::istreambuf_iterator<char,
std::char_traits<char> > > >
1.50% libstdc++.so.6.0.19 [.]
std::has_facet<std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > > >
1.31% libstdc++.so.6.0.19 [.]
std::use_facet<std::num_get<char, std::istreambuf_iterator<char,
std::char_traits<char> > > >
1.27% libstdc++.so.6.0.19 [.] std::use_facet<std::ctype<char> >
1.24% [kernel] [k] nmi
1.13% libstdc++.so.6.0.19 [.] std::locale::operator=
1.10% libstdc++.so.6.0.19 [.] std::num_put<char,
std::ostreambuf_iterator<char, std::char_traits<char> >
>::_M_insert_int<unsigned long>
1.00% libstdc++.so.6.0.19 [.]
std::use_facet<std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > > >
0.99% libpthread-2.17.so [.] pthread_mutex_lock
0.79% [kernel] [k] nohz_balance_exit_idle.part.61
0.72% [kernel] [k] first_nmi
0.66% libstdc++.so.6.0.19 [.] 0x000000000005b2ad
