balance_dirty_pages

# ./psn -d 30 -G kstack

Linux Process Snapper v0.14 by Tanel Poder [https://tp.dev/psnapper]
Sampling /proc/stat, stack for 30 seconds... finished.


=== Active Threads ====================================================================================================================================================================================================================================================================================================================================================================================================================================================

 samples | avg_threads | comm             | state                  | kstack
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
     429 |       11.00 | (java)           | Disk (Uninterruptible) | system_call_fastpath()->SyS_write()->vfs_write()->do_sync_write()->ext4_file_write()->generic_file_aio_write()->__generic_file_aio_write()->generic_file_buffered_write()->balance_dirty_pages_ratelimited()->balance_dirty_pages.isra.20()
     425 |       10.90 | (sh)             | Disk (Uninterruptible) | system_call_fastpath()->SyS_open()->do_sys_open()->do_filp_open()->path_openat()->do_last()->ima_file_check()
     234 |        6.00 | (FNDLIBR)        | Disk (Uninterruptible) | sysenter_dispatch()->SyS_write()->vfs_write()->do_sync_write()->ext4_file_write()->generic_file_aio_write()->__generic_file_aio_write()->generic_file_buffered_write()->balance_dirty_pages_ratelimited()->balance_dirty_pages.isra.20()
     117 |        3.00 | (xxxx)           | Disk (Uninterruptible) | system_call_fastpath()->SyS_write()->vfs_write()->do_sync_write()->ext4_file_write()->generic_file_aio_write()->__generic_file_aio_write()->generic_file_buffered_write()->balance_dirty_pages_ratelimited()->balance_dirty_pages.isra.20()
      39 |        1.00 | (FNDIMON)        | Disk (Uninterruptible) | sysenter_dispatch()->SyS_write()->vfs_write()->do_sync_write()->ext4_file_write()->generic_file_aio_write()->__generic_file_aio_write()->generic_file_buffered_write()->balance_dirty_pages_ratelimited()->balance_dirty_pages.isra.20()
      39 |        1.00 | (xxxxx.sh)       | Disk (Uninterruptible) | system_call_fastpath()->SyS_write()->vfs_write()->do_sync_write()->ext4_file_write()->generic_file_aio_write()->__generic_file_aio_write()->generic_file_buffered_write()->balance_dirty_pages_ratelimited()->balance_dirty_pages.isra.20()
      39 |        1.00 | (java)           | Disk (Uninterruptible) | sysenter_dispatch()->SyS_write()->vfs_write()->do_sync_write()->ext4_file_write()->generic_file_aio_write()->__generic_file_aio_write()->generic_file_buffered_write()->balance_dirty_pages_ratelimited()->balance_dirty_pages.isra.20()
      39 |        1.00 | (java)           | Disk (Uninterruptible) | system_call_fastpath()->SyS_write()->vfs_write()->do_sync_write()->ext4_file_write()->generic_file_aio_write()
      39 |        1.00 | (odl_rotatelogs) | Disk (Uninterruptible) | system_call_fastpath()->SyS_write()->vfs_write()->do_sync_write()->ext4_file_write()->generic_file_aio_write()->__generic_file_aio_write()->generic_file_buffered_write()->balance_dirty_pages_ratelimited()->balance_dirty_pages.isra.20()
      39 |        1.00 | (opmn)           | Disk (Uninterruptible) | system_call_fastpath()->SyS_write()->vfs_write()->do_sync_write()->ext4_file_write()->generic_file_aio_write()->__generic_file_aio_write()->generic_file_buffered_write()->balance_dirty_pages_ratelimited()->balance_dirty_pages.isra.20()
      31 |        0.79 | (kswapd*)        | Disk (Uninterruptible) | ret_from_fork()->kthread()->kswapd()->balance_pgdat()->shrink_zone()->shrink_lruvec()->shrink_inactive_list()->congestion_wait()
      21 |        0.54 | (beremote)       | Disk (Uninterruptible) | system_call_fastpath()->SyS_read()->vfs_read()->do_sync_read()->generic_file_aio_read()->page_cache_async_readahead()->ondemand_readahead()->__do_page_cache_readahead()->__page_cache_alloc()->alloc_pages_current()->__alloc_pages_nodemask()->__alloc_pages_slowpath()->try_to_free_pages()->do_try_to_free_pages()->shrink_zone()->shrink_lruvec()->shrink_inactive_list()->congestion_wait()
      14 |        0.36 | (beremote)       | Disk (Uninterruptible) | system_call_fastpath()->SyS_read()->vfs_read()->do_sync_read()->generic_file_aio_read()->__lock_page_killable()
       5 |        0.13 | (beremote)       | Running (ON CPU)       | -
       4 |        0.10 | (ksoftirqd/*)    | Running (ON CPU)       | ret_from_fork()->kthread()->smpboot_thread_fn()
       1 |        0.03 | (beremote)       | Running (ON CPU)       | system_call_fastpath()->SyS_futex()->do_futex()->futex_wait()->futex_wait_queue_me()
       1 |        0.03 | (java)           | Disk (Uninterruptible) | page_fault()->do_page_fault()->__do_page_fault()->handle_mm_fault()->do_wp_page()->do_page_mkwrite()->ext4_page_mkwrite()->file_update_time()->update_time()->__mark_inode_dirty()->ext4_dirty_inode()->ext4_mark_inode_dirty()->ext4_reserve_inode_write()->__ext4_journal_get_write_access()->jbd2_journal_get_write_access()->do_get_write_access()->__lock_buffer()
       1 |        0.03 | (java)           | Disk (Uninterruptible) | system_call_fastpath()->SyS_poll()->do_sys_poll()->sock_poll()->tcp_poll()->__pollwait()->__get_free_pages()->alloc_pages_current()->__alloc_pages_nodemask()->__alloc_pages_slowpath()->try_to_free_pages()->do_try_to_free_pages()->shrink_zone()->shrink_lruvec()->shrink_inactive_list()->congestion_wait()
       1 |        0.03 | (java)           | Running (ON CPU)       | -
       1 |        0.03 | (kswapd*)        | Running (ON CPU)       | ret_from_fork()->kthread()->kswapd()->balance_pgdat()->shrink_zone()->shrink_lruvec()->shrink_inactive_list()->congestion_wait()
       1 |        0.03 | (kworker/u*:*)   | Running (ON CPU)       | -

# cat /proc/meminfo
MemTotal:       24688928 kB
MemFree:          117096 kB
MemAvailable:    4168816 kB
Buffers:          388224 kB
Cached:          3743476 kB
SwapCached:        15456 kB
Active:         18795008 kB
Inactive:        4798184 kB
Active(anon):   17912424 kB
Inactive(anon):  1958024 kB
Active(file):     882584 kB
Inactive(file):  2840160 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:      16776184 kB
SwapFree:       16389184 kB
Dirty:            753740 kB
Writeback:             0 kB
AnonPages:      19447860 kB
Mapped:           105252 kB
Shmem:            408700 kB
Slab:             680804 kB
SReclaimable:     505712 kB
SUnreclaim:       175092 kB
KernelStack:       20128 kB
PageTables:        61464 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    29120648 kB
Committed_AS:   28469308 kB
VmallocTotal:   34359738367 kB
VmallocUsed:       69596 kB
VmallocChunk:   34359664380 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:       92160 kB
DirectMap2M:     3053568 kB
DirectMap1G:    22020096 kB


$ uname -a
Linux xxxx 3.10.0-693.21.1.el7.x86_64 #1 SMP Wed Mar 7 11:55:49 PST 2018 x86_64 x86_64 x86_64 GNU/Linux
$ cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.4 (Maipo)