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RobertBerger

machinekit-OOM-2

RobertBerger
Jul 19th, 2014
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  1.  
  2. Swap – The swap space used by that process.
  3.  
  4. USS – The amount of unshared memory unique to that process – think of it as unique memory. It does not include shared memory, so it underreports the amount of memory a process uses, but this column is helpful when you want to ignore shared memory. This column indicates how much RAM would be immediately freed up if this process exited.
  5.  
  6. PSS – This is the most valuable column. It adds together the unique memory (USS) and a proportion of shared memory derived by dividing total shared memory by the number of other processes sharing that memory. Thus it will give you an accurate representation of how much actual physical memory is being used per process, with shared memory truly represented as shared. Think of it as physical memory.
  7.  
  8. RSS – Resident Set Size, which is the amount of shared memory plus unshared memory used by each process. If any processes share memory, this will overreport the amount of memory actually used, because the same shared memory will be counted more than once, appearing again in each other process that shares the same memory. Thus it is an unreliable number, especially when high-memory processes have a lot of forks.
  9.  
  10. ======================================================
  11. 3213 student grep 3125 0 232 245 928
  12. 3125 student /usr/bin/python /home/stude 0 32216 36816 49400
  13. Swap | USS | PSS | RSS
  14. ======================================================
  15. 3239 student grep 3125 0 232 245 928
  16. 3125 student /usr/bin/python /home/stude 0 225748 230348 242932
  17. Swap | USS | PSS | RSS
  18. ======================================================
  19. 3279 student grep 3125 0 236 249 932
  20. 3125 student /usr/bin/python /home/stude 0 382160 386760 399344
  21. Swap | USS | PSS | RSS
  22. ======================================================
  23. 3306 student grep 3125 0 232 245 928
  24. 3125 student /usr/bin/python /home/stude 0 512076 516676 529260
  25. Swap | USS | PSS | RSS
  26. ======================================================
  27. 3345 student grep 3125 0 236 249 932
  28. 3125 student /usr/bin/python /home/stude 0 574060 578660 591244
  29. Swap | USS | PSS | RSS
  30. ======================================================
  31. 3376 student grep 3125 0 236 249 932
  32. 3125 student /usr/bin/python /home/stude 0 635916 640516 653100
  33. Swap | USS | PSS | RSS
  34. ======================================================
  35. 3414 student grep 3125 0 236 249 932
  36. 3125 student /usr/bin/python /home/stude 0 701896 706496 719080
  37. Swap | USS | PSS | RSS
  38. ======================================================
  39. 3454 student grep 3125 0 232 245 928
  40. 3125 student /usr/bin/python /home/stude 0 763016 767616 780200
  41. Swap | USS | PSS | RSS
  42. ======================================================
  43. 3487 student grep 3125 0 236 249 932
  44. 3125 student /usr/bin/python /home/stude 0 825076 829676 842260
  45. Swap | USS | PSS | RSS
  46. ======================================================
  47. 3519 student grep 3125 0 232 245 928
  48. 3125 student /usr/bin/python /home/stude 0 882608 887208 899792
  49. Swap | USS | PSS | RSS
  50. ======================================================
  51. 3560 student grep 3125 0 236 249 932
  52. 3125 student /usr/bin/python /home/stude 0 942744 947344 959928
  53. Swap | USS | PSS | RSS
  54. ======================================================
  55. 3594 student grep 3125 0 236 249 932
  56. 3125 student /usr/bin/python /home/stude 0 1009016 1013616 1026200
  57. Swap | USS | PSS | RSS
  58. ======================================================
  59. 3624 student grep 3125 0 236 249 932
  60. 3125 student /usr/bin/python /home/stude 0 1064028 1068628 1081212
  61. Swap | USS | PSS | RSS
  62. ======================================================
  63. 3662 student grep 3125 0 232 245 928
  64. 3125 student /usr/bin/python /home/stude 0 1082992 1087594 1100180
  65. Swap | USS | PSS | RSS
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