If that were true, then I wouldn't be getting a very large speed-up when
enveloping write ops in an explicit transaction, would I?


On Mon, Mar 3, 2014 at 8:44 PM, Simon Slavin <slav...@bigfraud.org> wrote:

>
> On 4 Mar 2014, at 1:15am, romtek <rom...@gmail.com> wrote:
>
> > I have a question based on my observation. According to your numbers for
> a
> > 5400 RPM disk, one write op should take about 11 ms. However, it often
> > takes only about 1 ms on HostGator drives on its shared hosting servers.
> > Are there drives that are SO much faster than 5400 RPM ones?
>
> I'll bet that the hosting servers are virtual machines and the drives are
> virtual drives, not physical drives.  Everything is actually done in RAM
> and just flushed to physical disk every so often.
>
> Simon.
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