Keep page caches for specific device

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I have build a Debian GNU/Linux box that I use as a NAS server. The system is installed in a USB stick. I have lots of RAM and almost no application running.



I would like the kernel to (almost) never discard page caches that belong to the USB stick. That is, once a file is read from the stick, I would like it to be kept in memory and never read again from the stick.



What is the recommended way to do that. [yes, I know... you will recommend me not to do that... :-)]









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    up vote
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    down vote

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    I have build a Debian GNU/Linux box that I use as a NAS server. The system is installed in a USB stick. I have lots of RAM and almost no application running.



    I would like the kernel to (almost) never discard page caches that belong to the USB stick. That is, once a file is read from the stick, I would like it to be kept in memory and never read again from the stick.



    What is the recommended way to do that. [yes, I know... you will recommend me not to do that... :-)]









    share























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I have build a Debian GNU/Linux box that I use as a NAS server. The system is installed in a USB stick. I have lots of RAM and almost no application running.



      I would like the kernel to (almost) never discard page caches that belong to the USB stick. That is, once a file is read from the stick, I would like it to be kept in memory and never read again from the stick.



      What is the recommended way to do that. [yes, I know... you will recommend me not to do that... :-)]









      share













      I have build a Debian GNU/Linux box that I use as a NAS server. The system is installed in a USB stick. I have lots of RAM and almost no application running.



      I would like the kernel to (almost) never discard page caches that belong to the USB stick. That is, once a file is read from the stick, I would like it to be kept in memory and never read again from the stick.



      What is the recommended way to do that. [yes, I know... you will recommend me not to do that... :-)]







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      asked 6 mins ago









      André Caldas

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