➜ /tmp pprof --text /data/apps/qemu-kvm/x86_64-softmmu/qemu-system-x86_64 profile_base/profile.0006.heap Some binary filenames not available. Symbolization may be incomplete. Try setting PPROF_BINARY_PATH to the search path for local binaries. File: qemu-system-x86_64 Type: inuse_space Showing nodes accounting for 374.50MB, 99.88% of 374.96MB total Dropped 756 nodes (cum <= 1.87MB) flat flat% sum% cum cum% 242.35MB 64.63% 64.63% 243.55MB 64.95% [librados.so.2.0.0] 99.59MB 26.56% 91.19% 99.59MB 26.56% [libglib-2.0.so.0.4200.2] 31.24MB 8.33% 99.53% 31.24MB 8.33% qemu_try_memalign 0.89MB 0.24% 99.76% 129.61MB 34.57% [libceph-common.so.0] 0.35MB 0.094% 99.86% 114.77MB 30.61% [librbd.so.1.12.0] 0.07MB 0.019% 99.88% 128.10MB 34.16% [libstdc++.so.6.0.19] 0 0% 99.88% 236.02MB 62.95% 0 0% 99.88% 130.71MB 34.86% __clone 0 0% 99.88% 136.74MB 36.47% __correctly_grouped_prefixwc 0 0% 99.88% 107.34MB 28.63% __libc_start_main 0 0% 99.88% 107.33MB 28.62% _start 0 0% 99.88% 2.16MB 0.58% access_with_adjusted_size 0 0% 99.88% 2.16MB 0.58% address_space_rw 0 0% 99.88% 2.10MB 0.56% address_space_update_topology 0 0% 99.88% 2.03MB 0.54% address_space_update_topology_pass 0 0% 99.88% 2.16MB 0.58% address_space_write 0 0% 99.88% 2.16MB 0.58% address_space_write_continue 0 0% 99.88% 88.04MB 23.48% aio_ctx_dispatch 0 0% 99.88% 88.04MB 23.48% aio_dispatch 0 0% 99.88% 3.97MB 1.06% bdrv_aligned_preadv 0 0% 99.88% 132.77MB 35.41% bdrv_aligned_pwritev 0 0% 99.88% 3.97MB 1.06% bdrv_co_do_preadv 0 0% 99.88% 132.77MB 35.41% bdrv_co_do_pwritev 0 0% 99.88% 3.97MB 1.06% bdrv_co_do_readv 0 0% 99.88% 136.74MB 36.47% bdrv_co_io_em 0 0% 99.88% 3.97MB 1.06% bdrv_co_readv 0 0% 99.88% 3.97MB 1.06% bdrv_co_readv_em 0 0% 99.88% 132.77MB 35.41% bdrv_co_writev_em 0 0% 99.88% 13.63MB 3.63% bdrv_open 0 0% 99.88% 13.56MB 3.62% bdrv_open_common 0 0% 99.88% 13.63MB 3.64% bdrv_open_inherit 0 0% 99.88% 4MB 1.07% bdrv_pread 0 0% 99.88% 4MB 1.07% bdrv_prwv_co 0 0% 99.88% 88.02MB 23.48% blk_aio_prwv 0 0% 99.88% 3.97MB 1.06% blk_aio_read_entry 0 0% 99.88% 62.02MB 16.54% blk_aio_readv 0 0% 99.88% 132.77MB 35.41% blk_aio_write_entry 0 0% 99.88% 26.01MB 6.94% blk_aio_writev 0 0% 99.88% 3.97MB 1.06% blk_co_preadv 0 0% 99.88% 132.77MB 35.41% blk_co_pwritev 0 0% 99.88% 13.65MB 3.64% blk_new_open 0 0% 99.88% 2MB 0.53% blk_prw 0 0% 99.88% 2MB 0.53% blk_read 0 0% 99.88% 2MB 0.53% blk_read_unthrottled 0 0% 99.88% 2MB 0.53% blk_rw 0 0% 99.88% 2MB 0.53% blkconf_geometry 0 0% 99.88% 13.64MB 3.64% blockdev_init 0 0% 99.88% 136.74MB 36.47% coroutine_trampoline 0 0% 99.88% 2.98MB 0.79% device_init_func 0 0% 99.88% 3.34MB 0.89% device_set_realized 0 0% 99.88% 13.65MB 3.64% drive_init_func 0 0% 99.88% 13.65MB 3.64% drive_new 0 0% 99.88% 88.04MB 23.48% glib_pollfds_poll 0 0% 99.88% 2MB 0.53% guess_disk_lchs 0 0% 99.88% 2MB 0.53% hd_geometry_guess 0 0% 99.88% 2.16MB 0.58% kvm_cpu_exec 0 0% 99.88% 2.08MB 0.56% kvm_handle_io 0 0% 99.88% 107.34MB 28.63% main 0 0% 99.88% 88.04MB 23.48% main_loop 0 0% 99.88% 88.04MB 23.48% main_loop_wait 0 0% 99.88% 2.03MB 0.54% mem_add 0 0% 99.88% 2.16MB 0.58% memory_region_dispatch_write 0 0% 99.88% 2.08MB 0.55% memory_region_set_enabled 0 0% 99.88% 2.16MB 0.58% memory_region_transaction_commit 0 0% 99.88% 2.16MB 0.58% memory_region_write_accessor 0 0% 99.88% 3.34MB 0.89% object_property_set 0 0% 99.88% 3.34MB 0.89% object_property_set_bool 0 0% 99.88% 3.34MB 0.89% object_property_set_qobject 0 0% 99.88% 88.04MB 23.48% os_host_main_loop_wait 0 0% 99.88% 2MB 0.53% pc_init1 0 0% 99.88% 2MB 0.53% pc_init_rhel730 0 0% 99.88% 2.07MB 0.55% pci_data_write 0 0% 99.88% 2.06MB 0.55% pci_default_write_config 0 0% 99.88% 2.07MB 0.55% pci_host_config_write_common 0 0% 99.88% 2.07MB 0.55% pci_host_data_write 0 0% 99.88% 3.27MB 0.87% pci_qdev_realize 0 0% 99.88% 3.34MB 0.89% property_set_bool 0 0% 99.88% 6.25MB 1.67% qcow2_cache_create 0 0% 99.88% 12.38MB 3.30% qcow2_open 0 0% 99.88% 6.25MB 1.67% qcow2_update_options 0 0% 99.88% 6.25MB 1.67% qcow2_update_options_prepare 0 0% 99.88% 2.98MB 0.8% qdev_device_add 0 0% 99.88% 94.03MB 25.08% qemu_coroutine_create 0 0% 99.88% 94.03MB 25.08% qemu_coroutine_new 0 0% 99.88% 2.17MB 0.58% qemu_kvm_cpu_thread_fn 0 0% 99.88% 16.70MB 4.45% qemu_opts_foreach 0 0% 99.88% 3.97MB 1.06% qemu_rbd_aio_readv 0 0% 99.88% 132.77MB 35.41% qemu_rbd_aio_writev 0 0% 99.88% 30.72MB 8.19% qemu_try_blockalign 0 0% 99.88% 3.97MB 1.06% raw_co_readv 0 0% 99.88% 132.77MB 35.41% raw_co_writev_flags 0 0% 99.88% 136.74MB 36.47% rbd_start_aio 0 0% 99.88% 130.71MB 34.86% start_thread 0 0% 99.88% 88.03MB 23.48% submit_requests 0 0% 99.88% 2.24MB 0.6% virtio_blk_device_realize 0 0% 99.88% 88.04MB 23.48% virtio_blk_handle_output 0 0% 99.88% 18.01MB 4.80% virtio_blk_handle_request 0 0% 99.88% 88.04MB 23.48% virtio_blk_handle_vq 0 0% 99.88% 2.25MB 0.6% virtio_blk_pci_realize 0 0% 99.88% 88.03MB 23.48% virtio_blk_submit_multireq 0 0% 99.88% 2.62MB 0.7% virtio_device_realize 0 0% 99.88% 2.74MB 0.73% virtio_pci_dc_realize 0 0% 99.88% 2.64MB 0.7% virtio_pci_realize 0 0% 99.88% 88.04MB 23.48% virtio_queue_host_notifier_read 0 0% 99.88% 88.04MB 23.48% virtio_queue_notify_vq