Les Mikesell wrote: > Benjamin Lewis wrote: > >>>>>> >>>>> There is something which leap out at me as soon a I saw this: the >>>>> kind >>>>> of person who _needs_ atime, knows how to set it. The majority of >>>>> people >>>>> - especially the home use - has little or no use for it whatsoever. >>>> The majority of people will see a performance boost they will >>>> appreciate regardless of whether they know about atime or not. >>> But whether it is a noticeable difference or not will depend on the >>> number of files they access, either with automated build procedures or >>> GUI file managers that like to peek inside every file. People who >>> keep their directory trees sparse and don't venture out of their home >>> directory in a GUI much will probably not know the difference except >>> that tmpwatch may not clean up correctly and their mailer may have to >>> do more work to decide if a message is unread (etc.). > >> In my experience, viewing a folder of images as thumbnails is >> significantly slower with atime. > > Are you sure that your viewer didn't cache the thumbnail images on the > first run so you were timing something different after changing the > option? > I did clear the caches, yes. >> Many users will be viewing folders of >> images methinks. In addition, most GUIs read a large (read huge) number >> of files when they load, so load times for the GUI should be reduced >> also. > > Some users will, some won't. The atime change should be going though > the disk write cache and thus only have a real-time hit when there is > enough disk activity that the cache writes conflict with read operations. > -- Benjamin Lewis Fedora Ambassador ben.lewis@xxxxxxxxxx ----------------------------------------------------------------------- http://benl.co.uk./ PGP Key: 0x647E480C "In cases of major discrepancy, it is always reality that got it wrong" -- RFC 1118
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