Pound, Debian Sarge, kernel 2.6.x - no fork / Pavel Francirek <pavel@toplist.cz>

Hello,

it seems like pound doesn't fork on shiny new Debian release 3.1 (sarge)
with kernel 2.6.x. Ps, top shows only one process. When using 2.4.x
kernel everithing looks fine. Does it mean that on 2.6.x kernel is used
different model (thread?). But with HyperThread processor (P4 EM64T) is
used only one virtual processor.
With older Debian release (woody) work everything too (2.4 and 2.6
kernel)

Pavel

Re: [Pound Mailing List] Pound, Debian Sarge, kernel 2.6.x - no fork
"Simon Matter" <simon.matter(at)ch.sauter-bc.com>

2005-06-11 15:30:23

[ SNIP ]

> Hello,
>
> it seems like pound doesn't fork on shiny new Debian release 3.1 (sarge)
> with kernel 2.6.x. Ps, top shows only one process. When using 2.4.x

What does 'ps faxm' show? I think it's because NPTL systems don't show
threads as separate processes anymore. Users of other distros had the same
experience years ago :)

Simon

> kernel everithing looks fine. Does it mean that on 2.6.x kernel is used
> different model (thread?). But with HyperThread processor (P4 EM64T) is
> used only one virtual processor.
> With older Debian release (woody) work everything too (2.4 and 2.6
> kernel)
>
> Pavel
>
>
>
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>
>

Re: [Pound Mailing List] Pound, Debian Sarge, kernel 2.6.x - no fork
Pavel Francirek <pavel(at)toplist.cz>

2005-06-13 12:09:30

[ SNIP ]

Hello,

On Sat, 2005-06-11 at 15:30 +0200, Simon Matter wrote:
> > Hello,
> >
> > it seems like pound doesn't fork on shiny new Debian release 3.1 (sarge)
> > with kernel 2.6.x. Ps, top shows only one process. When using 2.4.x
> 
> What does 'ps faxm' show? I think it's because NPTL systems don't show
> threads as separate processes anymore. Users of other distros had the same
> experience years ago :)

Thanks, now I see it. But it still seem it doesn't spread on both
'virtual' processors and takes all (according to top) CPU time only on
one.

Pavel

Re: [Pound Mailing List] Pound, Debian Sarge, kernel 2.6.x - no fork
"Simon Matter" <simon.matter(at)ch.sauter-bc.com>

2005-06-13 14:36:39

[ SNIP ]

> Hello,
>
> On Sat, 2005-06-11 at 15:30 +0200, Simon Matter wrote:
>> > Hello,
>> >
>> > it seems like pound doesn't fork on shiny new Debian release 3.1
>> (sarge)
>> > with kernel 2.6.x. Ps, top shows only one process. When using 2.4.x
>>
>> What does 'ps faxm' show? I think it's because NPTL systems don't show
>> threads as separate processes anymore. Users of other distros had the
>> same
>> experience years ago :)
>
> Thanks, now I see it. But it still seem it doesn't spread on both
> 'virtual' processors and takes all (according to top) CPU time only on
> one.

I almost never see something spread on both virtual CPU's, because they
don't really exist and almost nothing can be done in parallel on those
CPU's. The HT thing is much more PR than technology.

Simon