Content Explanation Of: /proc/fs/ext4/device_name/mb_groups












1















I've been wondering, what are the explanation of the columns in the /proc/fs/ext4/device_name/mb_groups file. The columns are:



#group: free frags first [ 2^0 2^1 2^2 2^3 2^4 2^5 2^6 2^7 2^8 2^9 2^10 2^11 2^12 2^13 ]


What's the meaning of every column ?










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    1















    I've been wondering, what are the explanation of the columns in the /proc/fs/ext4/device_name/mb_groups file. The columns are:



    #group: free frags first [ 2^0 2^1 2^2 2^3 2^4 2^5 2^6 2^7 2^8 2^9 2^10 2^11 2^12 2^13 ]


    What's the meaning of every column ?










    share|improve this question



























      1












      1








      1








      I've been wondering, what are the explanation of the columns in the /proc/fs/ext4/device_name/mb_groups file. The columns are:



      #group: free frags first [ 2^0 2^1 2^2 2^3 2^4 2^5 2^6 2^7 2^8 2^9 2^10 2^11 2^12 2^13 ]


      What's the meaning of every column ?










      share|improve this question
















      I've been wondering, what are the explanation of the columns in the /proc/fs/ext4/device_name/mb_groups file. The columns are:



      #group: free frags first [ 2^0 2^1 2^2 2^3 2^4 2^5 2^6 2^7 2^8 2^9 2^10 2^11 2^12 2^13 ]


      What's the meaning of every column ?







      linux filesystems ext4






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      share|improve this question








      edited 50 mins ago









      Rui F Ribeiro

      41.5k1483140




      41.5k1483140










      asked Aug 17 '15 at 18:26









      Bouchaala RedaBouchaala Reda

      82




      82






















          1 Answer
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          The file contains information on the buddy group cache of that specific disk and it's useful for the fragmentation status of said disk.



          The fields which I found are for a slightly different output, but at least it's a little more info.:



          #group: free free frags first pa [ 2^0 2^1 2^2 2^3 2^4 2^5 2^6 2^7 2^8 2^9 
          2^10 2^11 2^12 2^13]
          #group number
          Available blocks in the group
          Blocks free on a disk
          Number of free fragments
          First free block in the group
          Number of preallocated chunks (not blocks)
          A series of available chunks of different sizes


          I got my info from here and here






          share|improve this answer


























          • Thanks! I wasn't looking for a very deep explanation anyhow!

            – Bouchaala Reda
            Aug 19 '15 at 16:04











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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2














          The file contains information on the buddy group cache of that specific disk and it's useful for the fragmentation status of said disk.



          The fields which I found are for a slightly different output, but at least it's a little more info.:



          #group: free free frags first pa [ 2^0 2^1 2^2 2^3 2^4 2^5 2^6 2^7 2^8 2^9 
          2^10 2^11 2^12 2^13]
          #group number
          Available blocks in the group
          Blocks free on a disk
          Number of free fragments
          First free block in the group
          Number of preallocated chunks (not blocks)
          A series of available chunks of different sizes


          I got my info from here and here






          share|improve this answer


























          • Thanks! I wasn't looking for a very deep explanation anyhow!

            – Bouchaala Reda
            Aug 19 '15 at 16:04
















          2














          The file contains information on the buddy group cache of that specific disk and it's useful for the fragmentation status of said disk.



          The fields which I found are for a slightly different output, but at least it's a little more info.:



          #group: free free frags first pa [ 2^0 2^1 2^2 2^3 2^4 2^5 2^6 2^7 2^8 2^9 
          2^10 2^11 2^12 2^13]
          #group number
          Available blocks in the group
          Blocks free on a disk
          Number of free fragments
          First free block in the group
          Number of preallocated chunks (not blocks)
          A series of available chunks of different sizes


          I got my info from here and here






          share|improve this answer


























          • Thanks! I wasn't looking for a very deep explanation anyhow!

            – Bouchaala Reda
            Aug 19 '15 at 16:04














          2












          2








          2







          The file contains information on the buddy group cache of that specific disk and it's useful for the fragmentation status of said disk.



          The fields which I found are for a slightly different output, but at least it's a little more info.:



          #group: free free frags first pa [ 2^0 2^1 2^2 2^3 2^4 2^5 2^6 2^7 2^8 2^9 
          2^10 2^11 2^12 2^13]
          #group number
          Available blocks in the group
          Blocks free on a disk
          Number of free fragments
          First free block in the group
          Number of preallocated chunks (not blocks)
          A series of available chunks of different sizes


          I got my info from here and here






          share|improve this answer















          The file contains information on the buddy group cache of that specific disk and it's useful for the fragmentation status of said disk.



          The fields which I found are for a slightly different output, but at least it's a little more info.:



          #group: free free frags first pa [ 2^0 2^1 2^2 2^3 2^4 2^5 2^6 2^7 2^8 2^9 
          2^10 2^11 2^12 2^13]
          #group number
          Available blocks in the group
          Blocks free on a disk
          Number of free fragments
          First free block in the group
          Number of preallocated chunks (not blocks)
          A series of available chunks of different sizes


          I got my info from here and here







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 49 mins ago









          Rui F Ribeiro

          41.5k1483140




          41.5k1483140










          answered Aug 17 '15 at 19:00









          primeroprimero

          440138




          440138













          • Thanks! I wasn't looking for a very deep explanation anyhow!

            – Bouchaala Reda
            Aug 19 '15 at 16:04



















          • Thanks! I wasn't looking for a very deep explanation anyhow!

            – Bouchaala Reda
            Aug 19 '15 at 16:04

















          Thanks! I wasn't looking for a very deep explanation anyhow!

          – Bouchaala Reda
          Aug 19 '15 at 16:04





          Thanks! I wasn't looking for a very deep explanation anyhow!

          – Bouchaala Reda
          Aug 19 '15 at 16:04


















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