On Fri, 19 Jan 2001, Rik van Riel wrote:
> On Thu, 18 Jan 2001, Marcelo Tosatti wrote:
> > On Thu, 18 Jan 2001, Rik van Riel wrote:
> > > On Fri, 12 Jan 2001, Vlad Bolkhovitine wrote:
> > >
> > > > You can see, mmap() read performance dropped significantly as
> > > > well as read() one raised. P
On Thu, 18 Jan 2001, Marcelo Tosatti wrote:
> On Thu, 18 Jan 2001, Rik van Riel wrote:
> > On Fri, 12 Jan 2001, Vlad Bolkhovitine wrote:
> >
> > > You can see, mmap() read performance dropped significantly as
> > > well as read() one raised. Plus, "interactivity" of 2.4.0 system
> > > was much wor
On Thu, 18 Jan 2001, Rik van Riel wrote:
> On Fri, 12 Jan 2001, Vlad Bolkhovitine wrote:
>
> > You can see, mmap() read performance dropped significantly as
> > well as read() one raised. Plus, "interactivity" of 2.4.0 system
> > was much worse during mmap'ed test, than using read()
> > (every
On Fri, 12 Jan 2001, Vlad Bolkhovitine wrote:
> You can see, mmap() read performance dropped significantly as
> well as read() one raised. Plus, "interactivity" of 2.4.0 system
> was much worse during mmap'ed test, than using read()
> (everything was quite smooth here). 2.4.0-test7 was badly
> in
On Fri, 12 Jan 2001, Vlad Bolkhovitine wrote:
> After upgrade from 2.4.0-test7 to 2.4.0 while running tiotest v0.3.1 I found two
> following problems.
There have been quite a lot of things changed from 2.4.0-test7 to 2.4.0,
so I'm not sure what caused the slowdown.
Anyway, important VM change
Tiotest/tiobench a new disk benchmark program written by a group of people led
by Mika Kuoppala. AFAIK, it is the only disk IO test, which is able to use
mmap(). You can find it on http://tiobench.sourceforge.net/ or
http://www.icon.fi/~mak/tiotest/tiobench-0.3.1.tar.gz.
Regards,
Vlad
Ray Bryan
After upgrade from 2.4.0-test7 to 2.4.0 while running tiotest v0.3.1 I found two
following problems.
1. Tiotest is compiled for mmap() usage and there is no swap on the system with
~200Mb free memory. Tiotest tries to create mmap'ed file with size
~memory_size*2 and soon after start gets killed
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