Re^5: Useful number of childs revisited


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Re^5: Useful number of childs revisited

by BrowserUk (Patriarch)

on May 08, 2015 at 13:30 UTC ( [id://1126089]=note: print w/replies, xml )

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in reply to Re^4: Useful number of childs revisited
in thread Useful number of childs revisited [SOLVED]

I think the problem is: P::FM doesn't start the next process exactly when the previous ends because the sleep granularity used is 1 whole second.

Try setting $pm->set_waitpid_blocking_sleep(0); and re-run the 4,8,16.32,50...

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Re^6: Useful number of childs revisited
by karlgoethebier (Abbot) on May 08, 2015 at 13:58 UTC

"...P::FM doesn't start the next process exactly..."

It seems so :-)

karl@host:~$  ./buk.pl  4
processes: 4
fork: 7.16779208183289

karl@host:~$  ./buk.pl  8
processes: 8
fork: 7.21501088142395

karl@host:~$  ./buk.pl  16
processes: 16
fork: 7.43911504745483

karl@host:~$  ./buk.pl  32
processes: 32
fork: 7.09555101394653

karl@host:~$  ./buk.pl  50
processes: 50
fork: 6.84368109703064

karl@host:~$  ./buk.pl  100
processes: 100
fork: 6.94914984703064

karl@host:~$ ./forker.pl 4
numbers: 2000
processes: 4
fork: 19.2249510288239
for: 33.1473791599274

karl@host:~$ ./forker.pl 50
numbers: 2000
processes: 50
fork: 19.63889503479
for: 33.3032410144806
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Thank you very much and best regards, Karl

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