Messages in this thread | | | Date | Mon, 6 Aug 2007 08:58:34 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 00/23] per device dirty throttling -v8 |
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* Diego Calleja <diegocg@gmail.com> wrote:
> > Measurements show that noatime helps 20-30% on regular desktop > > workloads, easily 50% for kernel builds and much more than that (in > > excess of 100%) for file-read-intense workloads. We cannot just walk > > And as everybody knows in servers is a popular practice to disable it. > According to an interview to the kernel.org admins....
yeah - but i'd be surprised if more than 1% of all Linux servers out there had noatime.
> "Beyond that, Peter noted, "very little fancy is going on, and that is > good because fancy is hard to maintain." He explained that the only > fancy thing being done is that all filesystems are mounted noatime > meaning that the system doesn't have to make writes to the filesystem > for files which are simply being read, "that cut the load average in > half."
nice quote :-)
> I bet that some people would consider such performance hit a bug...
yeah.
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