It seems you are turning off blocking on the filehandles. I might be wrong, but if the handles don't block then "$select->can_read(5);" should not wait 5 seconds but return instantly (because as I understand it, can_read (via select()) tries a read on a filehandle and blocks until it can read or a timer runs out)

You might check that easily by putting a "print ++$x;" statement near the can_read line and see if there is a 5 second wait inbetween the numbers. Then turn on blocking reads and see if anything changes

UPDATE: Read the select() man page (http://linux.die.net/man/2/select), it says there that select returns when you can read a filehandle without blocking

In reply to Re: Performance and CPU load: sysread, IO::Select and/or Storable::thaw by jethro
in thread Performance and CPU load: sysread, IO::Select and/or Storable::thaw by DBX

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