Re: Easy - if you know how.
- From: Andreas <Andreas@xxxxxxxxxxxx>
- Date: 6 Nov 2007 16:08:20 +0100
Hi,
houghi wrote:
Andreas wrote:
The access time has some performance impact,
Huh? In what way?
which is also why ntfs sucks.
Why? Because reading a file actually means updating the time, hence
actually writing to disks. No read cache, slow write.
I do not understand what you are saying. Are you saying that old files
are not placed in read-cache when they are read?
If this is the case, how many files are we talking about and what is the
impact? Could I make my system faster by updating all files to 1 second
ago?
I think I completely misunderstand what is going on.
If a system is able to display the time some file was last accessed, this
timestamp must obvisously have been saved somewhere. It is, on disk.
This means write access to the hard drive when reading files. Even when
the file is served from cache, the directory entry is updates. More (slower)
writes as compared to same file read operatoins without noatime.
kind regards,
Andreas
.
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