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Re^2: Does IO::Select work? Solution

by BrowserUk (Pope)
on Oct 24, 2012 at 20:22 UTC ( #1000707=note: print w/ replies, xml ) Need Help??


in reply to Re: Does IO::Select work? Solution
in thread Does IO::Select work? Anywhere?

Is this the mythical Holy Grail select script that you have been looking for?

Not really. Start your server and before you connect anything, check top. 100% cpu when doing nothing isn't nice.


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Comment on Re^2: Does IO::Select work? Solution
Re^3: Does IO::Select work? Solution
by zentara (Archbishop) on Oct 25, 2012 at 10:25 UTC
    So that 100% cpu usage, is where you think the kernel needs tweaking? It's an odd 100%, because it dosn't seem to slow down my other processes. Maybe the kernel processing reporting is deceiving, just like the problem with memory gains, where even though ps says memory is being held by a process, the memory gain is just in the swap area, or some technical detail, which isn't real memory.

    Is this 100% cpu usage really 100%? If so, how come all my other apps are still as responsive as ever?


    I'm not really a human, but I play one on earth.
    Old Perl Programmer Haiku ................... flash japh

      Just change the time-out, probably from 0 to "infinity" (which is likely represented by -1).

      - tye        

        Tye, I didn't think you cared about anything I wrote!. :-) I tried -1 for infinity, and still 100% cpu. But I had the audacity to undefine infinity and it does the right thing. CPU usage is minimal.
        #Change: #my ($new_readable) = IO::Select->select($readable_handles, undef, und +ef, 0 ); # to my ($new_readable) = IO::Select->select($readable_handles, undef, unde +f, undef );
        and the server in Re: Does IO::Select work? Solution is the Holy Grail after all. No sysctl.ph needed. :-) Minimum cpu usage.

        I'm not really a human, but I play one on earth.
        Old Perl Programmer Haiku ................... flash japh

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