Messages in this thread | | | Date | Fri, 18 Sep 1998 11:15:08 +0200 | From | Pavel Machek <> | Subject | Re: Lazy atime mount option? |
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Hi!
> I have a laptop, and to speed it up and prevent the update daemon from > writing the HD, I have used the "noatime" mount option. However, what I'd > really like is a "lazyatime" write feature: > > I figure such a feature would simply *not* toggle the flag that says there > is something flush to the HD when the atime is written to. (Figuring that > if something writes to the HD, then it's put in the cache and a bit-flag > is set to "dirty" or some such.)
Get bdflush-1.6: it solves this some other way - bdflush will hold as much writes as it can until disk is spinned back up, then it writes them.
It would solve your problem.
It has some strange implications, however: if you edit file on a machine for ten hours, and your hdd sleeps after first 10 minutes, bdflush will sense it and not let anything onto disk. Harddisk will be sleeping for that 10 hours. If power fails, you loose.
(Reading from disk (uncached area) will cause spinup and immediate sync.)
Pavel -- I'm really pavel@atrey.karlin.mff.cuni.cz. Pavel Look at http://atrey.karlin.mff.cuni.cz/~pavel/ ;-).
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