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Old 11-06-2013, 06:46 PM   #1
NetBot
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Can a tmpfs be asigned a certain size


Hello

My system has 4gb of memory. I just gotten a SSD drive and created a tmpfs filesystem in the /etc/fstab file for the /tmp directory.

When I rebooted the system and ran df -h, the tmpfs size was 1.5gb. That's almost half my system memory. I am going to upgrade my system memory at a later date. Until then, can I assign a lower size like 1gb for tmpfs.

Thanks
 
Old 11-06-2013, 07:54 PM   #2
rknichols
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Certainly. In your /etc/fstab entry just include "size=nnn" in the options. An optional suffix of "%", "k", "m", or "g" will be accepted. It's all in the manpage for the mount command under "Mount options for tmpfs."

But, that 1.5GB is just the maximum size (defaults to 50% of available memory after the kernel is loaded). At any given time, that tmpfs will use only enough memory to hold the files currently there.

Last edited by rknichols; 11-06-2013 at 07:57 PM.
 
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Old 11-07-2013, 03:30 AM   #3
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Thank you rknichols. It works!
 
  


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