On Mon, Mar 30, 2009 at 9:14 AM, Cosimo Streppone wrote:
> The problem that we had, this was in November last year,
> was that all the backends were at load 15.0-20.0 (normal was ~3-4)
> after an update to the application.
That's pretty rare (hitting a CPU problem), and it sounds severe
enough th
On Mon, Mar 30, 2009 at 2:14 PM, Cosimo Streppone wrote:
> In data 30 mars 2009 alle ore 13:46:09, Rolf Banting
> ha scritto:
>
> > On Sun, Mar 29, 2009 at 9:52 PM, Perrin Harkins
> > wrote:
> >
> >> On Sun, Mar 29, 2009 at 4:44 PM, Cosimo Streppone
> >> wrote:
> >> > The main problem is that i
In data 30 mars 2009 alle ore 13:46:09, Rolf Banting ha
scritto:
> On Sun, Mar 29, 2009 at 9:52 PM, Perrin Harkins
> wrote:
>
>> On Sun, Mar 29, 2009 at 4:44 PM, Cosimo Streppone
>> wrote:
>> > The main problem is that in the past we experienced some kind of
>> > performance problems that on
Cosimo Streppone wrote:
However, some bad problems start to be evident only with really
high req/s rate.
Another possibility is that once you hit full load you're just pushing
the server over the edge for what it can manage load-wise. Use your
normal OS monitoring tools and ensure that you've
On Sun, Mar 29, 2009 at 9:52 PM, Perrin Harkins wrote:
> On Sun, Mar 29, 2009 at 4:44 PM, Cosimo Streppone
> wrote:
> > The main problem is that in the past we experienced some kind of
> > performance problems that only manifested themselves really clearly
> > in production and only at peak traf
On Sun, Mar 29, 2009 at 4:44 PM, Cosimo Streppone wrote:
> The main problem is that in the past we experienced some kind of
> performance problems that only manifested themselves really clearly
> in production and only at peak traffic hours.
> Out of peak hours, everything was fine.
That sounds l
Perrin Harkins wrote:
On Sun, Mar 29, 2009 at 4:08 PM, Cosimo Streppone
wrote:
Is profiling mod_perl like this at all possible?
Yes.
Does that make sense?
No.
You'll get so much data that you won't be able to make heads or tails
of it. And profiling is heavy enough that people hard
On Sun, Mar 29, 2009 at 4:08 PM, Cosimo Streppone wrote:
> Is profiling mod_perl like this at all possible?
Yes.
> Does that make sense?
No.
You'll get so much data that you won't be able to make heads or tails
of it. And profiling is heavy enough that people hardly ever do it on
production s
Hi,
I have no experience in profiling mod_perl.
I'd like to use Devel::NYTProf to profile a production mod_perl backend.
There's an LVS load balancer in front of the mod_perl backends.
So far my idea is:
- identify 1 backend that I want to execute profiling on
- make sure it's idle (weight=0 in
