***************** crashinfo --stacksummary ***************** /exports/testreports/68850/testresults/sanity2-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg316-server-timeout-core (4.18.0rh8.10-debug) ------- 105 stacks like that: ---------- #0 __schedule #1 schedule #2 taskq_thread #3 kthread #4 ret_from_fork youngest=0s(pid=5595), oldest=549s(pid=2343) ........................ arc_prune 1 times dbu_evict 1 times dp_sync_taskq 3 times dp_zil_clean_ta 12 times spl_delay_taskq 1 times spl_dynamic_tas 1 times spl_kmem_cache 1 times spl_system_task 1 times tx_commit_cb 3 times z_cl_int 3 times z_cl_iss 3 times z_flush_int 3 times z_flush_iss 3 times z_fr_int 3 times z_fr_iss 3 times z_metaslab 5 times z_null_int 3 times z_null_iss 3 times z_prefetch 3 times z_rd_int 7 times z_rd_iss 3 times z_trim_int 3 times z_trim_iss 5 times z_unlinked_drai 3 times z_upgrade 3 times z_vdev_file 1 times z_wr_int 9 times z_wr_iss 8 times z_zrele 3 times z_zvol 3 times zvol_tq-0 1 times ------- 51 stacks like that: ---------- #0 __schedule #1 schedule #2 ptlrpc_wait_event #3 ptlrpc_main #4 kthread #5 ret_from_fork youngest=0s(pid=12413), oldest=460s(pid=5807) ........................ ldlm_cb00_000 1 times ldlm_cb00_001 1 times ldlm_cn00_000 1 times ldlm_cn00_001 1 times ldlm_cn00_002 1 times ll_mgs_0000 1 times ll_mgs_0001 1 times ll_mgs_0002 1 times ll_ost00_000 1 times ll_ost00_001 1 times ll_ost00_002 1 times ll_ost00_003 1 times ll_ost00_004 1 times ll_ost00_005 1 times ll_ost00_006 1 times ll_ost00_007 1 times ll_ost00_008 1 times ll_ost00_009 1 times ll_ost00_010 1 times ll_ost00_011 1 times ll_ost00_012 1 times ll_ost_create00 3 times ll_ost_io00_000 1 times ll_ost_io00_001 1 times ll_ost_io00_002 1 times ll_ost_out00_00 2 times ll_ost_seq00_00 2 times mdt00_000 1 times mdt00_001 1 times mdt00_002 1 times mdt00_003 1 times mdt00_004 1 times mdt00_005 1 times mdt_fld_0000 1 times mdt_fld_0001 1 times mdt_io00_000 1 times mdt_io00_001 1 times mdt_io00_002 1 times mdt_out00_000 1 times mdt_out00_001 1 times mdt_rdpg00_000 1 times mdt_rdpg00_001 1 times mdt_rdpg00_002 1 times mdt_seqm_0000 1 times mdt_seqm_0001 1 times mdt_seqs_0000 1 times mdt_seqs_0001 1 times ------- 30 stacks like that: ---------- #0 __schedule #1 schedule #2 worker_thread #3 kthread #4 ret_from_fork youngest=0s(pid=8), oldest=574s(pid=653) ........................ kworker/0:0 1 times kworker/0:0H 1 times kworker/0:1 1 times kworker/0:2 1 times kworker/0:2H 1 times kworker/0:3 1 times kworker/1:0 1 times kworker/1:1 1 times kworker/1:1H 1 times kworker/1:2 1 times kworker/1:2H 1 times kworker/1:3 1 times kworker/2:0 1 times kworker/2:0H 1 times kworker/2:1 1 times kworker/2:2 1 times kworker/2:2H 1 times kworker/2:3 1 times kworker/3:0 1 times kworker/3:0H 1 times kworker/3:1 1 times kworker/3:2 1 times kworker/3:2H 1 times kworker/3:3 1 times kworker/u8:0 1 times kworker/u8:1 1 times kworker/u8:2 1 times kworker/u8:3 1 times kworker/u8:4 1 times kworker/u9:1 1 times ------- 27 stacks like that: ---------- #0 __schedule #1 schedule #2 rescuer_thread #3 kthread #4 ret_from_fork youngest=574s(pid=666), oldest=584s(pid=3) ........................ acpi_thermal_pm 1 times ata_sff 1 times blkcg_punt_bio 1 times crypto 1 times edac-poller 1 times ext4-rsv-conver 1 times ipv6_addrconf 1 times kblockd 1 times kintegrityd 1 times knbd0-recv 1 times kstrp 1 times kthrotld 1 times md 1 times md_bitmap 1 times mm_percpu_wq 1 times netns 1 times nfsiod 1 times rcu_gp 1 times rcu_par_gp 1 times rpciod 1 times scsi_tmf_0 1 times scsi_tmf_1 1 times slub_flushwq 1 times tpm_dev_wq 1 times writeback 1 times xprtiod 1 times zswap-shrink 1 times ------- 16 stacks like that: ---------- #0 __schedule #1 schedule #2 smpboot_thread_fn #3 kthread #4 ret_from_fork youngest=0s(pid=32), oldest=570s(pid=17) ........................ cpuhp/0 1 times cpuhp/1 1 times cpuhp/2 1 times cpuhp/3 1 times ksoftirqd/0 1 times ksoftirqd/1 1 times ksoftirqd/2 1 times ksoftirqd/3 1 times migration/0 1 times migration/1 1 times migration/2 1 times migration/3 1 times watchdog/0 1 times watchdog/1 1 times watchdog/2 1 times watchdog/3 1 times ------- 15 stacks like that: ---------- #0 __schedule #1 schedule #2 cv_wait_common #3 __cv_wait_idle #4 zthr_procedure #5 thread_generic_wrapper #6 kthread #7 ret_from_fork youngest=425s(pid=7436), oldest=464s(pid=5620) ........................ raidz_expand 3 times z_checkpoint_di 3 times z_indirect_cond 3 times z_livelist_cond 3 times z_livelist_dest 3 times ------- 14 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_hrtimeout_range_clock #3 schedule_hrtimeout_range #4 poll_schedule_timeout.constprop.11 #5 do_sys_poll #6 __x64_sys_poll #7 do_syscall_64 #8 entry_SYSCALL_64_after_hwframe youngest=0s(pid=15842), oldest=567s(pid=1031) ........................ NetworkManager 1 times gdbus 2 times gmain 3 times irqbalance 1 times polkitd 2 times rngd 1 times rpcbind 1 times sshd 1 times tuned 2 times ------- 10 stacks like that: ---------- #0 __schedule #1 schedule #2 futex_wait_queue_me #3 futex_wait #4 do_futex #5 __x64_sys_futex #6 do_syscall_64 #7 entry_SYSCALL_64_after_hwframe youngest=0s(pid=1101), oldest=567s(pid=1050) ........................ JS Helper 4 times gssproxy 5 times rs:main Q:Reg 1 times ------- 8 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_hrtimeout_range_clock #3 schedule_hrtimeout_range #4 poll_schedule_timeout.constprop.11 #5 do_select #6 core_sys_select #7 kern_select #8 __x64_sys_select #9 do_syscall_64 #10 entry_SYSCALL_64_after_hwframe youngest=0s(pid=1038), oldest=565s(pid=1063) ........................ agetty 3 times dhclient 1 times sshd 2 times tuned 2 times ------- 7 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_hrtimeout_range_clock #3 schedule_hrtimeout_range #4 ep_poll #5 do_epoll_wait #6 __x64_sys_epoll_wait #7 do_syscall_64 #8 entry_SYSCALL_64_after_hwframe youngest=0s(pid=1016), oldest=567s(pid=1041) ........................ dbus-daemon 1 times gssproxy 1 times systemd 2 times systemd-journal 1 times systemd-logind 1 times systemd-udevd 1 times ------- 5 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 wait_woken #4 ptlrpcd #5 kthread #6 ret_from_fork youngest=3s(pid=3281), oldest=413s(pid=3278) ........................ ptlrpcd_00_00 1 times ptlrpcd_00_01 1 times ptlrpcd_00_02 1 times ptlrpcd_00_03 1 times ptlrpcd_rcv 1 times ------- 4 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 qsd_upd_thread #4 kthread #5 ret_from_fork youngest=10s(pid=6678), oldest=51s(pid=7614) ........................ lquota_wb_lustr 4 times ------- 4 stacks like that: ---------- #0 __schedule #1 schedule #2 ldlm_bl_thread_main #3 kthread #4 ret_from_fork youngest=0s(pid=5790), oldest=3s(pid=5791) ........................ ldlm_bl_01 1 times ldlm_bl_02 1 times ldlm_bl_03 1 times ldlm_bl_04 1 times ------- 4 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 ksocknal_connd #4 kthread #5 ret_from_fork youngest=409s(pid=3269), oldest=460s(pid=3267) ........................ socknal_cd00 1 times socknal_cd01 1 times socknal_cd02 1 times socknal_cd03 1 times ------- 3 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_hrtimeout_range_clock #3 schedule_hrtimeout_range #4 cv_timedwait_hires_common #5 cv_timedwait_idle_hires #6 mmp_thread #7 thread_generic_wrapper #8 kthread #9 ret_from_fork youngest=0s(pid=6482), oldest=0s(pid=7431) ........................ mmp 3 times ------- 3 stacks like that: ---------- #0 __schedule #1 schedule #2 ksocknal_scheduler #3 kthread #4 ret_from_fork youngest=0s(pid=3272), oldest=0s(pid=3274) ........................ socknal_sd00_00 1 times socknal_sd00_01 1 times socknal_sd00_02 1 times ------- 2 stacks like that: ---------- #0 __schedule #1 schedule #2 osp_precreate_thread #3 kthread #4 ret_from_fork youngest=3s(pid=6798), oldest=3s(pid=8044) ........................ osp-pre-0-0 1 times osp-pre-1-0 1 times ------- 2 stacks like that: ---------- #0 __schedule #1 schedule #2 osp_sync_process_queues #3 llog_process_thread #4 llog_process_or_fork #5 llog_cat_process_cb #6 llog_process_thread #7 llog_process_or_fork #8 llog_cat_process_or_fork #9 llog_cat_process #10 osp_sync_thread #11 kthread #12 ret_from_fork youngest=61s(pid=8043), oldest=70s(pid=6797) ........................ osp-syn-0-0 1 times osp-syn-1-0 1 times ------- 2 stacks like that: ---------- #0 __schedule #1 schedule #2 ofd_id_repair_thread_main #3 kthread #4 ret_from_fork youngest=421s(pid=7607), oldest=441s(pid=6672) ........................ ofd_id_repair 2 times ------- 2 stacks like that: ---------- #0 __schedule #1 schedule #2 ofd_inconsistency_verification_main #3 kthread #4 ret_from_fork youngest=421s(pid=7606), oldest=441s(pid=6671) ........................ inconsistency_v 2 times ------- 2 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 __cv_timedwait_common #4 __cv_timedwait_idle #5 txg_sync_thread #6 thread_generic_wrapper #7 kthread #8 ret_from_fork youngest=0s(pid=6481), oldest=2s(pid=7430) ........................ txg_sync 2 times ------- 2 stacks like that: ---------- #0 __schedule #1 schedule #2 cv_wait_common #3 __cv_wait_idle #4 txg_quiesce_thread #5 thread_generic_wrapper #6 kthread #7 ret_from_fork youngest=0s(pid=6480), oldest=2s(pid=7429) ........................ txg_quiesce 2 times ------- 2 stacks like that: ---------- #0 __schedule #1 schedule #2 mgs_ir_notify #3 kthread #4 ret_from_fork youngest=421s(pid=5818), oldest=460s(pid=5793) ........................ mgs_lustre_noti 1 times mgs_params_noti 1 times ------- 2 stacks like that: ---------- #0 __schedule #1 schedule #2 ptlrpc_hr_main #3 kthread #4 ret_from_fork youngest=0s(pid=3266), oldest=0s(pid=3265) ........................ ptlrpc_hr00_000 1 times ptlrpc_hr00_001 1 times ------- 2 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_hrtimeout_range_clock #3 schedule_hrtimeout_range #4 cv_timedwait_hires_common #5 cv_timedwait_idle_hires #6 zthr_procedure #7 thread_generic_wrapper #8 kthread #9 ret_from_fork youngest=0s(pid=2350), oldest=0s(pid=2349) ........................ arc_evict 1 times arc_reap 1 times ------- 2 stacks like that: ---------- #0 __schedule #1 schedule #2 scsi_error_handler #3 kthread #4 ret_from_fork youngest=579s(pid=450), oldest=579s(pid=453) ........................ scsi_eh_0 1 times scsi_eh_1 1 times ------- 2 stacks like that: ---------- #0 __schedule #1 schedule #2 rcu_tasks_kthread #3 kthread #4 ret_from_fork youngest=584s(pid=11), oldest=584s(pid=10) ........................ rcu_tasks_rude_ 1 times rcu_tasks_trace 1 times ------- 2 stacks like that: ---------- #-1 native_safe_halt #0 default_idle #1 arch_cpu_idle #2 default_idle_call #3 do_idle #4 cpu_startup_entry #5 start_secondary #6 secondary_startup_64_no_verify youngest=584s(pid=0), oldest=584s(pid=0) ........................ swapper/1 1 times swapper/3 1 times ------- 1 stacks like that: ---------- youngest=0s(pid=15877), oldest=0s(pid=15877) ........................ basename 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 do_wait #3 kernel_wait4 #4 __do_sys_wait4 #5 __x64_sys_wait4 #6 do_syscall_64 #7 entry_SYSCALL_64_after_hwframe youngest=0s(pid=15873), oldest=0s(pid=15873) ........................ bash 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 pipe_wait #3 pipe_read #4 new_sync_read #5 __vfs_read #6 vfs_read #7 ksys_read #8 __x64_sys_read #9 do_syscall_64 #10 entry_SYSCALL_64_after_hwframe youngest=0s(pid=15862), oldest=0s(pid=15862) ........................ bash 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_hrtimeout_range_clock #3 schedule_hrtimeout_range #4 do_sigtimedwait #5 __x64_sys_rt_sigtimedwait #6 do_syscall_64 #7 entry_SYSCALL_64_after_hwframe youngest=80s(pid=12728), oldest=80s(pid=12728) ........................ (sd-pam) 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 distribute_txn_commit_thread #3 kthread #4 ret_from_fork youngest=458s(pid=5835), oldest=458s(pid=5835) ........................ dist_txn-0 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 mdt_restriper_main #3 kthread #4 ret_from_fork youngest=459s(pid=5828), oldest=459s(pid=5828) ........................ mdt_restriper_0 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 qmt_reba_thread #3 kthread #4 ret_from_fork youngest=459s(pid=5826), oldest=459s(pid=5826) ........................ qmt_reba_lustre 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 mgc_requeue_thread #3 kthread #4 ret_from_fork youngest=311s(pid=5799), oldest=311s(pid=5799) ........................ ll_cfg_requeue 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 ping_evictor_main #3 kthread #4 ret_from_fork youngest=0s(pid=5798), oldest=0s(pid=5798) ........................ ll_evictor 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 expired_lock_main #3 kthread #4 ret_from_fork youngest=461s(pid=5792), oldest=461s(pid=5792) ........................ ldlm_elt 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 io_schedule_timeout #4 __cv_timedwait_common #5 __cv_timedwait_io #6 zio_wait #7 dsl_pool_sync #8 spa_sync_iterate_to_convergence #9 spa_sync #10 txg_sync_thread #11 thread_generic_wrapper #12 kthread #13 ret_from_fork youngest=0s(pid=5618), oldest=0s(pid=5618) ........................ txg_sync 1 times ------- 1 stacks like that: ---------- #-1 __pv_queued_spin_lock_slowpath #0 do_raw_spin_lock #1 _raw_spin_lock_irqsave #2 finish_wait #3 cv_wait_common #4 __cv_wait_idle #5 txg_quiesce_thread #6 thread_generic_wrapper #7 kthread #8 ret_from_fork youngest=0s(pid=5617), oldest=0s(pid=5617) ........................ txg_quiesce 1 times ------- 1 stacks like that: ---------- #-1 zio_wait_for_children #0 zio_vdev_io_done #1 zio_execute #2 vdev_mirror_io_start #3 zio_vdev_io_start #4 zio_execute #5 taskq_thread #6 kthread #7 ret_from_fork youngest=0s(pid=5579), oldest=0s(pid=5579) ........................ z_wr_iss 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 lnet_peer_discovery #4 kthread #5 ret_from_fork youngest=0s(pid=3277), oldest=0s(pid=3277) ........................ lnet_discovery 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 wait_for_completion_interruptible_timeout #4 lnet_monitor_thread #5 kthread #6 ret_from_fork youngest=0s(pid=3276), oldest=0s(pid=3276) ........................ monitor_thread 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 lnet_acceptor #3 kthread #4 ret_from_fork youngest=409s(pid=3275), oldest=409s(pid=3275) ........................ acceptor_001 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 ksocknal_reaper #4 kthread #5 ret_from_fork youngest=0s(pid=3271), oldest=0s(pid=3271) ........................ socknal_reaper 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 __cv_timedwait_common #4 __cv_timedwait_idle #5 l2arc_feed_thread #6 thread_generic_wrapper #7 kthread #8 ret_from_fork youngest=0s(pid=2354), oldest=0s(pid=2354) ........................ l2arc_feed 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_hrtimeout_range_clock #3 schedule_hrtimeout_range #4 cv_timedwait_hires_common #5 cv_timedwait_idle_hires #6 dbuf_evict_thread #7 thread_generic_wrapper #8 kthread #9 ret_from_fork youngest=0s(pid=2352), oldest=0s(pid=2352) ........................ dbuf_evict 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_hrtimeout_range_clock #3 schedule_hrtimeout_range #4 poll_schedule_timeout.constprop.11 #5 do_sys_poll #6 __x64_sys_ppoll #7 do_syscall_64 #8 entry_SYSCALL_64_after_hwframe youngest=0s(pid=1099), oldest=0s(pid=1099) ........................ in:imjournal 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_hrtimeout_range_clock #3 schedule_hrtimeout_range #4 poll_schedule_timeout.constprop.11 #5 do_select #6 core_sys_select #7 __x64_sys_pselect6 #8 do_syscall_64 #9 entry_SYSCALL_64_after_hwframe youngest=9s(pid=1081), oldest=9s(pid=1081) ........................ rsyslogd 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 do_nanosleep #3 hrtimer_nanosleep #4 __x64_sys_nanosleep #5 do_syscall_64 #6 entry_SYSCALL_64_after_hwframe youngest=10s(pid=1060), oldest=10s(pid=1060) ........................ crond 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 nfs41_callback_svc #3 kthread #4 ret_from_fork youngest=568s(pid=979), oldest=568s(pid=979) ........................ NFSv4 callback 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 kjournald2 #3 kthread #4 ret_from_fork youngest=574s(pid=665), oldest=574s(pid=665) ........................ jbd2/nbd0-8 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 wait_woken #4 sk_wait_data #5 tcp_recvmsg #6 inet_recvmsg #7 sock_recvmsg #8 sock_xmit #9 nbd_read_stat #10 recv_work #11 process_one_work #12 worker_thread #13 kthread #14 ret_from_fork youngest=269s(pid=651), oldest=269s(pid=651) ........................ kworker/u9:0 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 kswapd #3 kthread #4 ret_from_fork youngest=581s(pid=71), oldest=581s(pid=71) ........................ kswapd0 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 kthread_worker_fn #3 kthread #4 ret_from_fork youngest=583s(pid=58), oldest=583s(pid=58) ........................ watchdogd 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 khugepaged #4 kthread #5 ret_from_fork youngest=4s(pid=48), oldest=4s(pid=48) ........................ khugepaged 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 ksm_scan_thread #3 kthread #4 ret_from_fork youngest=584s(pid=47), oldest=584s(pid=47) ........................ ksmd 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 kcompactd #3 kthread #4 ret_from_fork youngest=584s(pid=46), oldest=584s(pid=46) ........................ kcompactd0 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 oom_reaper #3 kthread #4 ret_from_fork youngest=584s(pid=44), oldest=584s(pid=44) ........................ oom_reaper 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 schedule_timeout_interruptible #4 watchdog #5 kthread #6 ret_from_fork youngest=92s(pid=43), oldest=92s(pid=43) ........................ khungtaskd 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 devtmpfsd #3 kthread #4 ret_from_fork youngest=489s(pid=39), oldest=489s(pid=39) ........................ kdevtmpfs 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 schedule_timeout #3 rcu_gp_kthread #4 kthread #5 ret_from_fork youngest=0s(pid=13), oldest=0s(pid=13) ........................ rcu_sched 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule #2 kthreadd #3 ret_from_fork youngest=0s(pid=2), oldest=0s(pid=2) ........................ kthreadd 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule_idle #2 do_idle #3 cpu_startup_entry #4 start_secondary #5 secondary_startup_64_no_verify youngest=584s(pid=0), oldest=584s(pid=0) ........................ swapper/2 1 times ------- 1 stacks like that: ---------- #0 __schedule #1 schedule_idle #2 do_idle #3 cpu_startup_entry #4 rest_init #5 start_kernel #6 x86_64_start_reservations #7 x86_64_start_kernel #8 secondary_startup_64_no_verify youngest=584s(pid=0), oldest=584s(pid=0) ........................ swapper/0 1 times ** Execution took 2.05s (real) 0.56s (CPU), Child processes: 1.49s