Messages in this thread | | | Date | Sat, 4 Aug 2007 18:56:04 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 00/23] per device dirty throttling -v8 |
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* Andrew Morton <akpm@linux-foundation.org> wrote:
> > yeah, it's really ugly. But otherwise i've got no real complaint > > about ext3 - with the obligatory qualification that > > "noatime,nodiratime" in /etc/fstab is a must. This speeds up things > > very visibly - especially when lots of files are accessed. It's kind > > of weird that every Linux desktop and server is hurt by a noticeable > > IO performance slowdown due to the constant atime updates, > > Not just more IO: it will cause great gobs of blockdev pagecache to > remain in memory, too.
i tried to convince distro folks about it ... but there's fear, uncertainty and doubt about touching /etc/fstab and i suspect no major distro will do it until another does it - which is a catch-22 :-/ So i guess we should add a kernel config option that allows the kernel rpm maker to just disable atime by default. (re-enableable via boot-line and fstab entry too) [That new kernel config option would be disabled by default.] That makes it much easier to control and introduce.
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