Messages in this thread | | | Date | Sun, 5 Aug 2007 09:18:01 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 00/23] per device dirty throttling -v8 |
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* Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> > Linux has always been a "POSIX unless its stupid" type of system. > > For the upstream kernel, we should do the right thing -- noatime by > > default -- but allow distros and people that care about rigid > > compliance to easily change the default. > > Linux has never been a "suprise your kernel interfaces all just > changed today" kernel, nor a "gosh you upgraded and didn't notice your > backups broke" kernel.
HSM uses atime as a _hint_. The only even remotely valid argument is Mutt, and even that one could easily be fixed _it is not even installed by default on most distros_ and nobody but me uses it ;) [and i've been using Mutt on noatime filesystems for years] So basically a single type of package and use-case (against tens of thousands of packages) held all of Linux desktop IO performance hostage for 10 years, to the tune of a 20-30-50-100% performance degradation (depending on the workload)? Wow.
And the atime situation is _so_ obvious, what will we do in the much less obvious cases?
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