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cpu
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This is normal for Unix/Linux/BSD. When you read in pages from disk for any reason they get stuffstuffed into cache and left there. The memory is available if you need it but it cost overhead to free it up and if you need that same disk again you don't have to read it into memory again. Notice your Buff/Cache is 19G? Only 10G is actually in use. If you do run out of memory your system will start using SWAP and everything will slow down depending on how fast your SWAP device is. Then you have a problem.

This is normal for Unix/Linux/BSD. When you read in pages from disk for any reason they get stuff into cache and left there. The memory is available if you need it but it cost overhead to free it up and if you need that same disk again you don't have to read it into memory again. Notice your Buff/Cache is 19G? Only 10G is actually in use. If you do run out of memory your system will start using SWAP and everything will slow down depending on how fast your SWAP device is. Then you have a problem.

This is normal for Unix/Linux/BSD. When you read in pages from disk for any reason they get stuffed into cache and left there. The memory is available if you need it but it cost overhead to free it up and if you need that same disk again you don't have to read it into memory again. Notice your Buff/Cache is 19G? Only 10G is actually in use. If you do run out of memory your system will start using SWAP and everything will slow down depending on how fast your SWAP device is. Then you have a problem.

Source Link
cpu
cpu
  • 1
  • 2

This is normal for Unix/Linux/BSD. When you read in pages from disk for any reason they get stuff into cache and left there. The memory is available if you need it but it cost overhead to free it up and if you need that same disk again you don't have to read it into memory again. Notice your Buff/Cache is 19G? Only 10G is actually in use. If you do run out of memory your system will start using SWAP and everything will slow down depending on how fast your SWAP device is. Then you have a problem.