Seem that starting osd with: TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES=128M /usr/bin/ceph-osd fix it. I don't known if it's the right way ? ----- Mail original ----- De: "aderumier" <aderumier@xxxxxxxxx> À: "ceph-devel" <ceph-devel@xxxxxxxxxxxxxxx>, "Somnath Roy" <somnath.roy@xxxxxxxxxxx> Envoyé: Lundi 27 Avril 2015 14:06:22 Objet: Hitting tcmalloc bug even with patch applied Hi, I'm hitting the tcmalloc even with patch apply. It's mainly occur when I try to bench fio with a lot jobs (20 - 40 jobs) Does It need to tuned something in osd environnement variable ? I double check it with #g++ -o gperftest gperftest.c -ltcmalloc # export TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES=67108864 # ./gperftest Tcmalloc OK! Internal and Env cache size are same:67108864 perf top ------- 10.04% libtcmalloc.so.4.1.2 [.] tcmalloc::ThreadCache::ReleaseToCentralCache 8.19% libtcmalloc.so.4.1.2 [.] tcmalloc::CentralFreeList::FetchFromSpans 3.89% libtcmalloc.so.4.1.2 [.] tcmalloc::CentralFreeList::ReleaseToSpans 2.04% libtcmalloc.so.4.1.2 [.] tcmalloc::CentralFreeList::ReleaseListToSpans 1.79% libtcmalloc.so.4.1.2 [.] operator new 1.25% ceph-osd [.] ConfFile::load_from_buffer 1.21% libtcmalloc.so.4.1.2 [.] operator delete 1.14% [kernel] [k] _raw_spin_lock 1.08% libstdc++.so.6.0.19 [.] std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string 1.04% [kernel] [k] __schedule 1.00% libpthread-2.17.so [.] pthread_mutex_trylock 0.90% [kernel] [k] native_write_msr_safe 0.89% [kernel] [k] __switch_to 0.79% [kernel] [k] _raw_spin_lock_irqsave 0.73% [kernel] [k] copy_user_enhanced_fast_string Regards, Alexandre -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
