sysfs-fs-f2fs 3.3 KB

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  1. What: /sys/fs/f2fs/<disk>/gc_max_sleep_time
  2. Date: July 2013
  3. Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
  4. Description:
  5. Controls the maximun sleep time for gc_thread. Time
  6. is in milliseconds.
  7. What: /sys/fs/f2fs/<disk>/gc_min_sleep_time
  8. Date: July 2013
  9. Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
  10. Description:
  11. Controls the minimum sleep time for gc_thread. Time
  12. is in milliseconds.
  13. What: /sys/fs/f2fs/<disk>/gc_no_gc_sleep_time
  14. Date: July 2013
  15. Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
  16. Description:
  17. Controls the default sleep time for gc_thread. Time
  18. is in milliseconds.
  19. What: /sys/fs/f2fs/<disk>/gc_idle
  20. Date: July 2013
  21. Contact: "Namjae Jeon" <namjae.jeon@samsung.com>
  22. Description:
  23. Controls the victim selection policy for garbage collection.
  24. What: /sys/fs/f2fs/<disk>/reclaim_segments
  25. Date: October 2013
  26. Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  27. Description:
  28. Controls the issue rate of segment discard commands.
  29. What: /sys/fs/f2fs/<disk>/ipu_policy
  30. Date: November 2013
  31. Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  32. Description:
  33. Controls the in-place-update policy.
  34. What: /sys/fs/f2fs/<disk>/min_ipu_util
  35. Date: November 2013
  36. Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  37. Description:
  38. Controls the FS utilization condition for the in-place-update
  39. policies.
  40. What: /sys/fs/f2fs/<disk>/min_fsync_blocks
  41. Date: September 2014
  42. Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
  43. Description:
  44. Controls the dirty page count condition for the in-place-update
  45. policies.
  46. What: /sys/fs/f2fs/<disk>/max_small_discards
  47. Date: November 2013
  48. Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  49. Description:
  50. Controls the issue rate of small discard commands.
  51. What: /sys/fs/f2fs/<disk>/max_victim_search
  52. Date: January 2014
  53. Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  54. Description:
  55. Controls the number of trials to find a victim segment.
  56. What: /sys/fs/f2fs/<disk>/dir_level
  57. Date: March 2014
  58. Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  59. Description:
  60. Controls the directory level for large directory.
  61. What: /sys/fs/f2fs/<disk>/ram_thresh
  62. Date: March 2014
  63. Contact: "Jaegeuk Kim" <jaegeuk.kim@samsung.com>
  64. Description:
  65. Controls the memory footprint used by f2fs.
  66. What: /sys/fs/f2fs/<disk>/trim_sections
  67. Date: February 2015
  68. Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
  69. Description:
  70. Controls the trimming rate in batch mode.
  71. What: /sys/fs/f2fs/<disk>/cp_interval
  72. Date: October 2015
  73. Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
  74. Description:
  75. Controls the checkpoint timing.
  76. What: /sys/fs/f2fs/<disk>/idle_interval
  77. Date: January 2016
  78. Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
  79. Description:
  80. Controls the idle timing.
  81. What: /sys/fs/f2fs/<disk>/ra_nid_pages
  82. Date: October 2015
  83. Contact: "Chao Yu" <chao2.yu@samsung.com>
  84. Description:
  85. Controls the count of nid pages to be readaheaded.
  86. What: /sys/fs/f2fs/<disk>/dirty_nats_ratio
  87. Date: January 2016
  88. Contact: "Chao Yu" <chao2.yu@samsung.com>
  89. Description:
  90. Controls dirty nat entries ratio threshold, if current
  91. ratio exceeds configured threshold, checkpoint will
  92. be triggered for flushing dirty nat entries.
  93. What: /sys/fs/f2fs/<disk>/lifetime_write_kbytes
  94. Date: January 2016
  95. Contact: "Shuoran Liu" <liushuoran@huawei.com>
  96. Description:
  97. Shows total written kbytes issued to disk.