sudo perf top output: Samples: 1M of event 'cycles:ppp', Event count (approx.): 476944550835 Overhead Shared Object Symbol 24.93% [kernel] [k] _raw_spin_lock 21.52% [kernel] [k] zfs_prune 17.29% [kernel] [k] d_prune_aliases 9.48% [kernel] [k] _atomic_dec_and_lock 9.20% [kernel] [k] iput 7.95% [kernel] [k] igrab 0.75% [kernel] [k] arc_evict_state 0.50% [kernel] [k] clear_page_erms 0.48% [kernel] [k] mutex_unlock 0.39% [kernel] [k] arc_space_consume 0.36% [kernel] [k] hdr_full_cons 0.36% [kernel] [k] arc_space_return 0.34% [kernel] [k] mutex_lock 0.28% [kernel] [k] kmem_cache_free 0.27% [kernel] [k] spl_kmem_cache_alloc 0.24% [kernel] [k] __cv_destroy 0.22% [kernel] [k] multilist_sublist_unlock 0.22% [kernel] [k] _raw_spin_lock_irqsave 0.20% [kernel] [k] _cond_resched 0.20% [kernel] [k] kmem_cache_alloc 0.17% [kernel] [k] multilist_sublist_lock 0.14% [kernel] [k] rcu_all_qs 0.14% [kernel] [k] osq_lock 0.12% [kernel] [k] spl_kmem_cache_free 0.12% [kernel] [k] __indirect_thunk_start 0.12% [kernel] [k] native_queued_spin_lock_slowpath 0.11% [kernel] [k] __init_waitqueue_head 0.11% [kernel] [k] arc_prune_async 0.11% [kernel] [k] __cv_init 0.09% [kernel] [k] __schedule
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1814983 Title: zfs poor sustained read performance from ssd pool To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1814983/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
