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Old 31st July 2008, 08:54 AM
techmum Offline
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[F9 64] noatime for tmpfs | devpts | sysfs | proc ?

I have been testing adding the noatime option to my Logical Volumes + swap in /etc/fstab and that seems to be working well with some system speed improvement.

However my /etc/fstab file also has other mount points such as >
/tmpfs
/devpts
/sysfs
/proc
Wondering if there is any point in adding the noatime option to those entries as well?

ta

Last edited by techmum; 31st July 2008 at 09:41 AM. Reason: Highlight as question
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  #2  
Old 31st July 2008, 09:19 AM
Seve Offline
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Hello:
Good question

I have no idea but I'd love to know the answer as well.

Seve
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  #3  
Old 31st July 2008, 10:44 AM
Mariano Suárez-
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Those mount points are really do not point to your hardisks but to memory and/or interfaces that the kernel exposes. The best plan would be to leave them alone
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Old 31st July 2008, 10:48 AM
oneofmany Offline
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i concur with mariano
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  #5  
Old 31st July 2008, 03:23 PM
techmum Offline
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Quote:
Originally Posted by Mariano Suárez-
Those mount points are really do not point to your hardisks but to memory and/or interfaces that the kernel exposes. The best plan would be to leave them alone
Ta. That's what I suspected from their names.

Thanks for the clarification.
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  #6  
Old 31st July 2008, 04:10 PM
A.Serbinski Offline
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Well technically, assuming that the filesystem types support the recording of access time (tmpfs does, the rest I don't know), then even if they are in memory, then there will be a performance improvement from adding noatime to them. HOWEVER, being that they're in memory, the performance improvement is SO MARGINAL that you would never be able to measure it. As such, there's no point is messing with it.
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  #7  
Old 31st July 2008, 04:36 PM
brebs Offline
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The access time isn't being updated anyway, so noatime would have no effect. Check it:
Code:
cat /proc/mtrr
ls -ltu /proc/mtrr
Shows the bootup time, rather than now.
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