Yes
On Feb 20, 7:11 pm, Ayende Rahien <[email protected]> wrote:
> Can you repro this on dev machine?
>
> On Fri, Feb 20, 2009 at 1:07 PM, Gildas <[email protected]> wrote:
>
> > Hi Andre, thanks for answering. I did answer minutes ago but it looks
> > like google did not care...
>
> > We use NH 2nd level cache a lot and the sql server process rarely move
> > but I must admit I did not check those counters. I'll try that
> > tomorrow.
>
> > Thanks
>
> > --
> > Gildas
>
> > On Feb 20, 6:41 pm, Andre Loker <[email protected]> wrote:
> > > Hi,
> > > Just a wild guess, maybe there are concurrent database locks that block
> > > the requests. Have you checked the isolation levels of DB transactions
> > > and the Windows performance logs (there are some performance counters
> > > regarding sql server locks).
>
> > > Regards,
> > > Andre
>
> > > > Hi,
>
> > > > We have a rather complex monorail/activerecord/rhino application. We
> > > > noticed a very high CPU consumption under heavy load so I tried to
> > > > make some tests on our development server with wcat.
>
> > > > When only one user is accessing the application, the CPU stay between
> > > > 3 or 5%. As soon as another one is accessing the application at the
> > > > same time, the CPU exceed 90%. We use a lot of viewcomponents which
> > > > cache their output, so that's should not be the rendering process.
>
> > > > I suspect a lock or something similar is happening. I tried to find
> > > > out what using dottrace but every single method take a long time to
> > > > execute when 2 users are accessing the application.
>
> > > > Does anybody have any ideas about what to look for ?
>
> > > > Thanks !
>
> > > > --
> > > > Gildas
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